Page 1 ISO 9001:2015 Certified Installation and Operation Manual Generation Rack-Mount RDMS™ Telemetry Receiver Quasonix, Inc. 6025 Schumacher Park Dr. West Chester, OH 45069 12 June 2018 Revision 3.2 Applies to RDMS System Version 15 No part of the document may be circulated, quoted, or reproduced for distribution without prior written approval from Quasonix, Inc.
Page 2: Table Of Contents
Generation Rack-Mount RDMS™ Table of Contents Introduction ............................1 Description ........................... 1 Nomenclature ..........................2 1.2.1 Options ............................ 2 1.2.2 Detailed Option Descriptions....................3 1.2.2.1 SAW Filter Option – 14 ....................... 3 1.2.2.2 Cybersecurity – CS ......................3 1.2.2.3...
Page 3 Generation Rack-Mount RDMS™ 4.6.1 Selecting a Receiver Channel ....................23 4.6.2 Main Menu Settings....................... 24 4.6.2.1 Frequency ......................... 25 4.6.2.1.1 Playback Demodulator .................... 26 4.6.2.2 Frequency Diversity (Available with Diversity Combiner) ..........27 4.6.2.3 Mode ..........................27 4.6.2.4 Bit Rate ..........................
Page 4 Alias........................75 4.6.3.1.12 System IP ......................75 4.6.3.1.13 Secure Name (Currently Unavailable) ..............75 4.6.3.1.14 Ethernet......................... 75 4.6.3.1.15 System Update (RDMS Local Update) ..............77 4.6.3.2 Graphics Menu........................80 4.6.3.2.1 Graph Type ......................80 4.6.3.2.2 Signal Strength......................83 Browser Interface........................85 4.7.1...
Page 5 Generation Rack-Mount RDMS™ 4.7.3.2 Channel Selection and Basic Settings ................93 4.7.3.2.1 Data and Clock Polarity Settings................96 4.7.3.2.2 Derandomizer Settings.................... 96 4.7.3.2.3 Differential Decoding Settings (SOQPSK Only)............96 4.7.3.3 Configure Advanced Settings ................... 97 4.7.3.3.1 Measured Bit Rate Setting ..................98 4.7.3.3.2...
Page 6 Page Access ........................125 4.7.6.3 Export..........................126 4.7.6.4 Import ..........................126 4.7.6.5 Admin (Quasonix Factory Use Only) ................127 Access via Telnet........................129 Tier 0 (PCM/FM), Tier I (SOQPSK-TG), and Tier II (MULTI-H CPM) Commands....133 4.9.1 Additional Command Set Details..................138 4.9.1.1 Antenna Control Unit –...
Page 7 Generation Rack-Mount RDMS™ 4.9.1.17 Data Quality Encapsulation – DQ ................... 166 4.9.1.18 Derandomizer State – DR....................167 4.9.1.19 Digital Status Output – DSO ................... 168 4.9.1.20 Forward Error Correction – FEC ..................169 4.9.1.21 Force Lock Indication – FL....................169 4.9.1.22 FM Demodulator Settings –...
Page 8 13.3 3U Connectors......................... 214 13.4 Troubleshooting ........................215 Appendix F – Factory Reset Values ....................217 Appendix G – Special Considerations for International Applications..........221 15.1 IP Address Separator ......................221 Appendix H - RDMS with -IP Option ....................224 Quasonix, Inc.
Page 9 Appendix J – Acronym List......................235 List of Figures Figure 1: Rack-Mount RDMS™ Part Number Construction ................. 2 Figure 2: Mechanical Drawing – 1U Front View.................... 9 Figure 3: Mechanical Drawing – 1U Top View (Dual-channel Connectors Shown) ........9 Figure 4: Mechanical Drawing –...
Page 10 Generation Rack-Mount RDMS™ Figure 20: Front Panel Keypad ........................25 Figure 21: Frequency Key on Front Panel ....................25 Figure 22: Main Menu, Frequency Setting....................25 Figure 23: Frequency Entry Screen ......................26 Figure 24: Example Keypad Combination for Setting Frequency............... 26 Figure 25: Main Menu, Frequency Diversity Setting...................
Page 11 Generation Rack-Mount RDMS™ Figure 57: AGC Menu, AGC Zero Mode-Manual Highlighted..............42 Figure 58: Waveform Graphics Before Zero AGC Set................43 Figure 59: AGC Menu, Zero AGC Highlighted.................... 43 Figure 60: Waveform Graphics After AGC Zero Set................... 44 Figure 61: Main Menu, AM Menu Selection....................
Page 12 Generation Rack-Mount RDMS™ Figure 94: Best Channel Indicator Off (Grey) ..................... 63 Figure 95: Advanced Menu, Time Aligner Selection................... 63 Figure 96: Advanced Menu, Combiner Mode Selection ................64 Figure 97: Main Menu, AFC Mode Selection ....................65 Figure 98: Advanced Menu, AFC Mode –...
Page 13 Figure 143: RDMS™ Browser Interface Tool Bar..................87 Figure 144: Browser Interface Monitor Screen ................... 87 Figure 145: Monitor Screen for RDMS™ with Only One Channel Available ..........88 Figure 146: Monitor Screen Partial Status Information Block when Combiner On........89 Figure 147: Monitor Screen Partial Status Information Block when Combiner Off........
Page 14 Generation Rack-Mount RDMS™ Figure 168: Advanced Settings Window, PCM Encoding Drop Down Menu..........103 Figure 169: Advanced Settings Window, LDPC Mode Drop Down Menu ..........104 Figure 170: Advanced Settings Window, Channel A Output Drop Down Menu ........105 Figure 171: Advanced Settings Window, Channel B Output Drop Down Menu ........
Page 15 Figure 238: 3 Generation RDMS 3U Back Panel Connectors..............224 Figure 239: 3 Generation RDMS 3U Back Panel Connectors-Right Side ..........225 Figure 240: Browser Window with an Incorrect IP Address..............226 Figure 241: Receiver Addressing Window....................226 Quasonix, Inc.
Page 16 Generation Rack-Mount RDMS™ Figure 242: Browser Interface Header Tool Bar for RDMS™ with TMoIP Option........227 Figure 243: RDMS™ Browser Interface Header Tool Bar, TMoIP Tab............ 227 Figure 244: TMoIP Monitor/Configure Screen ..................227 Figure 245: TMoIP Monitor/Configure Screen with TMoIP Channel Selected ......... 228 Figure 246: TMoIP Network Screen......................
Page 17 Table 18: SOQPSK Factory Reset Values ....................218 Table 19: Multi-h CPM Factory Reset Values................... 219 Table 20: QPSK Factory Reset Values..................... 220 Table 21: Reference Documents ......................224 Table 22: 3U Rack-Mount RDMS TMoIP Ports ..................225 Quasonix, Inc.
Page 18: Introduction
STC/LDPC  OQPSK/LDPC Of the aforementioned, RDMS™ provides true multi-symbol trellis demodulation in all three ARTM modes, PCM/FM, SOQPSK-TG, and Multi-h PCM. It also provides a clock signal, obviating the need for any outboard bit synchronizer. Modes that support LDPC use IRIG-standard low-density parity check coding to dramatically improve link margin by up to 9 dB.
Page 19: Nomenclature
1.2 Nomenclature The Rack-Mount RDMS™ (hereafter referred to as “RM RDMS™”) is available in a plethora of variations based on the number of channels, frequency bands, demodulation methods, options, etc. The features and modes installed in each unit are identified in the model number, as depicted in Figure 1.
Page 20: Detailed Option Descriptions
Ethernet (EVTM) Payload, Receive Only – EN When the EN option is enabled, the RDMS will recover EVTM encoded data and convert it from Serial Streaming Telemetry back to the original Ethernet packets. Standard SST operation is not replaced, and can still be used. This hardware must be paired with an -EN enabled transmitter for proper data recovery.
Page 21: Viterbi Decoder (For Legacy Psk Or Pcm/Fm Only) - K7
Generation Rack-Mount RDMS™ A web based graphical user interface (GUI) provides end-to-end TMoIP configuration, control, and status. Network Auto-Tune capability performs automatic measurement and compensation for uncertain or varying network delay and jitter. PCM serial input channels support automatic bit rate detection and IP packet size auto-configuration.
Page 22: Band Configurations
Generation Rack-Mount RDMS™ 1.2.3 Band Configurations Band configuration codes are listed in Table 2. Two additional band codes are described in section 1.2.3.1. Table 2: Band Configuration Codes 1415.0 Extended 1585.0 1650.0 Extended 1855.0 2185.0 Extended 2500.0 Extended 5250.0...
Page 23: Additional Band Codes
Generation Rack-Mount RDMS™ 1.2.3.1 Additional Band Codes Two additional band codes are available:  Band Code 7: 70 MHz standard range, 0.075 MHz-20 MHz, 70 MHz extended range  Band Code T: 2025.0 MHz to 2110.0 MHz standard range 1.3 Package Contents...
Page 24: Specifications
14 – 40 MHz bandwidths: -15 dBm Combiner: -5 dBm Channel 1 and 2 Mod Out: -5 dBm (3U RDMS only) IF output impedance 50 ohms VSWR 2:1 Max; 1.5:1 Typical 250 kHz, 500 kHz, 1 MHz, 2 MHz, 4.5 MHz, 10 MHz, 20 MHz, 40 MHz. Automatic selection based on modulation type and data rate, with manual override.
Page 25 Generation Rack-Mount RDMS™ Characteristic Specification Demodulator Section ARTM Tier 0 (PCM/FM), ARTM Tier I (SOQPSK-TG), ARTM Tier II (Multi-h CPM) Legacy suite: Analog FM, BPSK, QPSK, Offset QPSK (OQPSK), Asymmetric QPSK Demodulator type (AQPSK), Unbalanced QPSK (UQPSK), Asymmetric Unbalanced QPSK (AUQPSK),...
Page 26: Installation Instructions
3.1.1 1U Rack-Mount The 1U RM RDMS™ Telemetry Receiver’s enclosure fits in a standard 19” rack, occupying just 1U of rack space. Mechanical layouts are provided in Figure 2 and Figure 3. Figure 2: Mechanical Drawing – 1U Front View Figure 3: Mechanical Drawing –...
Page 27: Touchscreen
3.1.2 3U Touchscreen The 3U RM RDMS™ Telemetry Receiver’s enclosure fits in a standard 19” rack, occupying 3U of rack space. Mechanical layouts are provided in Figure 4 and Figure 5. Figure 4: Mechanical Drawing – 3U Front View Figure 5: Mechanical Drawing –...
Page 28: Thermal
3.2 Thermal The storage temperature of the RM RDMS™ unit is rated for 0°C to +70°C, while the operating temperature is rated for 0°C to +50°C. It is recommended that the unit be kept in a temperature controlled environment to minimize the risk of operating (or storing) outside the ranges specified.
Page 29: Rear Panel Connections
Generation Rack-Mount RDMS™ 3.3.2 3U Rear Panel Connections Rear panel connectors are the same for all receivers; however, in a single-channel configuration all connectors are not active. An optional pre-detection diversity combiner is available in the dual-channel receiver configuration. Connectors for the diversity combiner, EVTM, and TMoIP are present whether the feature is ordered or not.
Page 30: Table 4: Additional 3U Rear Panel Connectors
IRIG-B Time Input TMoIP IRIG-B Time Output RDMS USB (J79) Currently Factory Use Only RDMS Control (J80) RDMS Control or TMoIP Control EVTM Data (J81) EVTM RJ-45 Ethernet via Telemetry Data TMOIP (J82) TMoIP RJ-45 Telemetry over IP Data Stream Out...
Page 31: Table 5: 1U And 3U Rear Panel Connector Specifications
Generation Rack-Mount RDMS™ Table 5: 1U and 3U Rear Panel Connector Specifications Channel 1 Channel 2 Combiner Channel 1 Channel 2 Combiner Receiver Connector Connector Connector Connector Connector Connector Nomenclature Number/pin Number/pin Number/pin Number/pin Number/pin Number/pin Clock A Data A Clock B J9/14 J9/19 J9/25 Data B...
Page 32: Digital Output Mdm-25 D-Sub Pinout-J9
Generation Rack-Mount RDMS™ 3.3.2.1 1U Digital Output MDM-25 D-Sub Pinout-J9 The pinout for the 1U J9, an MDM-25 D-sub connector, is shown in Table 6. Pin locations are illustrated in Figure Table 6: 1U Digital Output MDM-25 D-Sub Pinout (J9) Electrical Char.
Page 33: Figure 8: 1U Mdm-25 D-Sub Pin Locations For J23 And J9
Generation Rack-Mount RDMS™ Figure 8: 1U MDM-25 D-Sub Pin Locations for J23 and J9 Quasonix, Inc.
Page 34: Electrical Signals
By default, the output data is valid on the falling edge of the clock, as shown in Figure 9. The polarity of the output clock may be inverted by toggling the Clock Polarity setting in either user interface. The RM RDMS™ can be operated through its front panel interface or web-based browser interface (RDMS™...
Page 35 X’s represent the IP address of the rack. The main Browser Interface web page displays in the browser window and the user has control of the rack. For issues that occur during installation, call Quasonix Technical Support at 513-942-1287. Quasonix, Inc.
Page 36: Operating Instructions
Generation Rack-Mount RDMS™ Operating Instructions The RM RDMS™ can be operated through its front panel interface or via the web-based browser interface (RDMS Browser Interface). The browser interface is capable of configuring, maintaining, and monitoring multiple receivers within a network.
Page 37: Front-Panel Control
In a single-channel configuration, waveform graphics are displayed on the left-most LCD and receiver settings are on the second LCD from the left. A static Quasonix logo is shown on the two right-most LCDs. In a dual-channel receiver, the two LCDs located to the right of the power switch are designated for Channel 1, while the other two LCDs are designated for Channel 2.
Page 38: Waveform Graphics
Generation Rack-Mount RDMS™ Figure 12: 3U Front Panel Graphics, DQM, Main Menu, and Virtual Keypad 4.5 Waveform Graphics Each channel’s waveform graphics display provides a real-time visual representation of the received signal’s constellation, or eye pattern in the case for PCM/FM.
Page 39: Navigation
Generation Rack-Mount RDMS™ Figure 15: Waveform Graphics LCD with Locked PCM/FM Signal The signal strength bar, the left of the two with the letter “S” below it, transitions from red at 0 dB Eb/N0 to green at 10 dB Eb/N0 and greater. The level in dBm is indicated above the bar.
Page 40: Selecting A Receiver Channel
Figure 18: Active Main Menu Settings LCD The Please Wait message, shown in Figure 19, displays whenever the RDMS™ is busy—generally when processing a command for longer than one second. This usually occurs during a Mode change, Ethernet configuration, or due to configuration via the Browser Interface.
Page 41: Main Menu Settings
Figure 20. Depending on the number of options provided with the RDMS™, some menu items may not display when the RDMS™ is powered on. To see additional LCD menu options, use the arrow keys to scroll up or down. The complete list redisplays continuously forward or backward, depending on which arrow key is pressed.
Page 42: Frequency
Generation Rack-Mount RDMS™ Figure 20: Front Panel Keypad To change a setting or access a secondary menu, use the arrow keys to navigate to the parameter. When highlighted, the Enter key prompts a secondary menu screen or a setting screen, or changes the setting itself if there are only two possible states.
Page 43: Playback Demodulator
When the RDMS™ Frequency is set to 75 kHz to 20 MHz, or 70 MHz with a selectable SAW filter (which is well below the standard 200.0 MHz-5250.0 MHz range), the RF downconverter is bypassed and demodulator IF input...
Page 44: Frequency Diversity (Available With Diversity Combiner)
Generation Rack-Mount RDMS™ Mod scaling Acquisition mode (the default) accurately determines the modulation index of a signal in the presence of additive white Gaussian noise (AWGN). While AWGN is always present to some extent when the RF front end is in use, it may not be present when the signal comes directly from the IF input, at least until the playback signal is applied to the demodulator input.
Page 45: Figure 26: Main Menu, Mode Setting
Generation Rack-Mount RDMS™ Figure 26: Main Menu, Mode Setting Due to character limitations in the on-screen menu, some modulation names have been shortened. The following table lists the modes, as they will appear on the screen in the left column, with the generally accepted naming convention in the right column.
Page 46: Bit Rate
Generation Rack-Mount RDMS™ 4.6.2.4 Bit Rate There are two methods available to the user to set the receiver’s bit rate. The first one is to press the Rate key on the front panel keypad. The second method is to highlight the Bit Rate option on the Main Menu, then press the Enter key on the PC keyboard.
Page 47: Combiner (Optional)
Combiner (Optional) A pre-detection diversity combiner is available as an option for dual-channel receivers. If diversity combining is installed on the RDMS™, it can be enabled through the Main Menu > Combiner option. Figure 31: Main Menu, Combiner Setting When the combiner is enabled on one channel, the second channel automatically reflects this change.
Page 48: Clock Polarity
Generation Rack-Mount RDMS™ Figure 32: Main Menu, Data Setting 4.6.2.7 Clock Polarity The Clock option on the Main Menu is for adjusting the clock polarity. The parameter options are Normal and Inverted. To change the polarity, press the Enter key on the front panel keypad when the parameter is highlighted on the Main Menu.
Page 49: Data Quality Encapsulation (Dqe)
(BEP) allows DQE from multiple vendors to interoperate. The Quasonix DQM is based on statistics developed deep inside the demodulator. Bit Error Probability (BEP) is the calculated likelihood that a bit is in error. A very low BEP can be determined from only a few bits. BEP does not require any known data and can be determined quickly and accurately from demodulator statistics.
Page 50: Figure 36: Dqe Format
Generation Rack-Mount RDMS™ The DQE format includes a header consisting of the following:  16-bit sync pattern (0xFAC4) MSB first: 1111101011000100 1.00 0.00  16-bit ID word (format TBD) 0.95 1E-01 1.11111E-01 5211  16-bit DQM = min(round(-log10(LR) / 12 * 1E-02 1.01010E-02...
Page 51: Derandomizer
(0-10). 4.6.2.10 Derandomizer The RM RDMS™ includes a derandomizer, which can be enabled (two modes) or disabled by selecting the parameter from the Main Menu and pressing the Enter key on the front panel keypad. The default setting for the derandomizer is Off.
Page 52: Modulation Scaling (Pcm/Fm Mode Only)
4.6.2.11.1 Modulation Scaling – Tracking When the RDMS™ is powered on, the default setting is Acquire, unless the unit was powered off from a preset condition. If the unit was powered off from an unmodified preset setting, then the default condition of Modulation Scaling is as defined in the preset.
Page 53: Modulation Scaling - Hold
4.6.2.11.2 Modulation Scaling – Hold When the RDMS™ has a good lock on the target transmitter, Modulation Scaling should be set to Hold by highlighting the Mod Scaling option on the Main Menu and then pressing the Enter key on the keypad.
Page 54: Modulation Scaling - Acquire
4.6.2.11.4 Modulation Scaling – Acquire When the RDMS™ is powered on, the default setting is Acquire, unless the unit was powered off from a preset condition. Acquire mode has two states: Armed and Triggered. When Modulation Scaling is set to Acquire, in the absence of signal, the eye pattern will turn Yellow, as shown in Figure 48, the state is set to Armed.
Page 55: Modulation Persistence (Pcm/Fm Mode Only)
Generation Rack-Mount RDMS™ 4.6.2.12 Modulation Persistence (PCM/FM Mode Only) The Mod Persist option allows the current state of the Mod Scaling setting to be retained following a power-off cycle of the rack. The default value is Off, as shown in Figure 49.
Page 56: Agc Menu
Generation Rack-Mount RDMS™ Figure 51: Main Menu, Differential Decoding 4.6.2.14 AGC Menu Access the Automatic Gain Control (AGC) menu from the front panel Main Menu. Select the AGC Menu, and then press the Enter key on the front panel keypad.
Page 57: Agc Scale
Generation Rack-Mount RDMS™ Figure 53: AGC Menu, Polarity Highlighted 4.6.2.14.2 AGC Scale The AGC Scale option, shown in Figure 54, adjusts the voltage of the AGC back panel BNC output. The scale can be set in units of dB/V (decibels per volt). The higher the scale is set, the more dynamic range the AGC output can represent, but the lower its resolution will be.
Page 58: Agc Freeze
Generation Rack-Mount RDMS™ bandwidth is set to 100 Hz, then the AM output will include any AM frequencies between roughly 10 Hz and 100 To change the Time Constant value, select Time Constant, then press the Enter key on the front panel. An entry screen (Figure 55) prompts the operator to type a new Time Constant, in milliseconds, using the rack’s front panel...
Page 59: Agc Zero Mode
Generation Rack-Mount RDMS™ 4.6.2.14.5 AGC Zero Mode The AGC Zero Hold (On/Off) option from the 2nd Generation RDMS was replaced by AGC Zero Mode. There are three available settings, Manual, Hold, or Hold and Save.  Manual – Means the AGC must be zeroed (set) manually after any frequency or IF bandwidth change, or after a power cycle;...
Page 60: Figure 58: Waveform Graphics Before Zero Agc Set
Generation Rack-Mount RDMS™ Figure 58: Waveform Graphics Before Zero AGC Set A typical application of the Zero AGC function is explained in the following example. 1. Connect the receiver to its normal RF signal source, such as antenna, LNA, cabling, and splitters.
Page 61: Am Menu
Generation Rack-Mount RDMS™ Figure 60: Waveform Graphics After AGC Zero Set The AGC output voltage is set to zero volts DC at a time when the receiver input is at its minimum value. This process ensures that the AGC output voltage will not cross through zero volts DC under normal operation.
Page 62: Am Bandwidth
Generation Rack-Mount RDMS™ The AM (Amplitude Modulation) menu includes the following parameters:  AM Bandwidth (00)  AM Polarity (Positive/Negative)  Scale (0.5-2.5)  AGC Comp (Enabled / Disabled) 4.6.2.15.1 AM Bandwidth To change the AM Bandwidth value, select the appropriate option, as shown in Figure 62, then press the Enter key on the front panel.
Page 63: Am Scale
Generation Rack-Mount RDMS™ 4.6.2.15.3 AM Scale To change the AM Scale value, select the Scale option on the AM Menu, as shown in Figure 65, then press the Enter key on the front panel. Figure 65: AM Menu, Scale Highlighted Figure 66: AM Scale Entry Screen An entry screen prompts the operator to enter a new AM Scale using the rack’s front panel numeric keypad, as...
Page 64: Options Menu
The Load Menu allows previously stored configuration settings from the Save Presets screen, or the system default presets, to be retrieved. (The RDMS ships with predefined presets. Presets are always available even if the user has not created any custom presets. There are no “empty” preset slots.) To load saved presets, select the appropriate option, then press the Enter key on the front panel.
Page 65: Save Presets Menu
4.6.2.16.2 Save Presets Menu With the 3rd Generation RDMS™ there is no such thing as an empty preset. A brand new RDMS™ contains eight default presets. The Save Presets Menu allows the current settings to be saved for convenient retrieval at a later time, or for quickly switching between configurations.
Page 66: Advanced Menu
Figure 72: Options Menu, Factory Default Selection and Reset in Process 4.6.2.17 Advanced Menu The Advanced Menu should only be accessed by advanced users. Contact Quasonix customer support before using these options. The Advanced Menu, which is accessed via the Main Menu, as shown in Figure 73, provides access to the following options: ...
Page 67: Synchronize Bit Rate
Generation Rack-Mount RDMS™ Figure 73: Main Menu, Advanced Menu 4.6.2.17.1 Synchronize Bit Rate Synchronize Bit Rate sets the receiver’s commanded bit rate to the value it is currently measuring on the input signal. The purpose of this process is to eliminate unintended bit rate offset error so that the receiver can make full use of its bit synchronizer tracking range, or optionally reduce its tracking range.
Page 68: Figure 75: 70 Mhz If Module In 2" X 3" Chassis
Six additional filters are available allowing for a total of 14. The optional filters are 70 kHz, 1.4 MHz, 3 MHz, 6 MHz, 14 MHz, and 28 MHz. The measured responses of the optional filters are shown in Figure 75 and Figure 76. Contact Quasonix for information about the optional filters. Quasonix, Inc.
Page 69: Figure 76: 70 Mhz If Module In 2" X 3" Chassis Saw Filter Responses, Narrow Group (10 Mhz Span)
Generation Rack-Mount RDMS™ Figure 76: 70 MHz IF Module in 2” x 3” Chassis SAW Filter Responses, Narrow Group (10 MHz Span) Quasonix, Inc.
Page 70: Figure 77: Saw Filter Responses, Wide Group (Plotted On 100 Mhz Span)
Generation Rack-Mount RDMS™ Figure 77: SAW Filter Responses, Wide Group (Plotted on 100 MHz Span) Quasonix, Inc.
Page 71: Figure 78: Optional Saw Filter Responses For 70 Khz To 6 Mhz
Generation Rack-Mount RDMS™ Figure 78: Optional SAW Filter Responses for 70 kHz to 6 MHz Quasonix, Inc.
Page 72: Phase Noise Comp (Pcm/Fm Mode Only)
Generation Rack-Mount RDMS™ Figure 79: Optional SAW Filter Responses for 14 MHz and 28 MHz Based on the receiver’s high level of integration, the proper IF filter is automatically selected based on the current mode and bit rate settings of the demodulator. Although manual filter selection is available via the IF Filter Menu on the front panel LCD, as shown in Figure 80, manual selection is not recommended.
Page 73: Muting Timeout
Generation Rack-Mount RDMS™ Figure 81: Advanced Menu, Phase Noise Compensation Selection The user may toggle the Phase Noise Compensation value by pressing the Enter key on the front panel keypad until the desired value displays. 4.6.2.17.4 Muting Timeout The Muting Timeout option, shown in Figure 82 is used to set a timeout value (in milliseconds).
Page 74: Output Muting
Generation Rack-Mount RDMS™ Figure 83: Muting Timeout Entry Screen 4.6.2.17.5 Output Muting The Output Muting option, shown in Figure 84, is used to set the muting value to On or Off. When the Output Muting option is set to On, the receiver stops sending clock and data information when the timeout value is reached.
Page 75: Mod Scale Index
Generation Rack-Mount RDMS™ Figure 85: Advanced Menu, DC Antenna Selection The downconverting antenna has an LO that is used to downconvert C band signals (4400 MHz – 5150 MHz) to a lower frequency range known as P band (400 MHz – 1150 MHz) using an LO frequency of 5550 MHz. This results in two issues that are addressed by the downconverting antenna control.
Page 76: Best Channel Selector
Generation Rack-Mount RDMS™ To change the Modulation Scale Index, select Mod Scale Index, then press the Enter key on the front panel. A dialog screen displays prompting the operator to enter a new modulation scale index using the rack’s front panel numeric keypad.
Page 77: Figure 89: System Block Diagram With Best Channel Selector
Generation Rack-Mount RDMS™ The Best-Channel Selector (BCS) is a revolutionary new feature, unique to the Quasonix RDMS™. Its purpose is to ensure that the back-panel data output from the Combiner is always optimal, even in rare cases where the Pre- Detection Diversity Combiner struggles relative to Channel 1 and Channel 2.
Page 78: Figure 90: Best Channel Indicator Example
BSS designed to handle several seconds of time delay between channels. Driving an external BSS with several RDMS™ BCS outputs leverages the strengths of both. 4.6.2.17.8.1 Best Channel Selector Indicator Best Channel Selector status is only displayed with the Combiner option enabled and set to On.
Page 79: Figure 91: Best Channel Indicator-Combiner
Generation Rack-Mount RDMS™ intuitive—condition is absence of any signal impairment. In this case, all channels have essentially “perfect” signal quality, so the BCS cannot distinguish one that is “best” and will simply stick with its current selection until something changes.
Page 80: Time Aligner
Generation Rack-Mount RDMS™ Figure 93: Best Channel Indicator-Ch 2 Figure 94 illustrates BCS Off. Figure 94: Best Channel Indicator Off (Grey) 4.6.2.17.9 Time Aligner The Time Aligner option is only available with the Combiner option enabled and set to On. The Time Aligner can be disabled or enabled.
Page 81: Combiner Mode
The Quasonix RDMS™ Combiner can perform both phase alignment and time alignment of the Channel 1 and Channel 2 signals. The Time Aligner is capable of correcting up to ±1300 nanoseconds of time skew between channels (about a quarter mile of free-space propagation).
Page 82: Afc Mode
AFC (Automatic Frequency Control) Mode, shown in Figure 97, compensates for frequency offset in the received signal relative to the expected carrier frequency. Demodulators for all modes in the RDMS™ contain frequency- tracking loops that can accommodate some amount of frequency offset. The amount of offset that can be tolerated depends on the mode and is generally a small percentage of the bit rate.
Page 83: Afc Mode - Track
Generation Rack-Mount RDMS™ Figure 98: Advanced Menu, AFC Mode – Off 4.6.2.18.2 AFC Mode – Track When AFC Mode is set to Track, as shown in Figure 99, the AFC continuously attempts to estimate and compensate for the input frequency offset unless the input Eb/N0 falls below a predefined threshold. This mode is best suited for dynamic frequency offsets.
Page 84: Pcm Encoding
(i.e., RZ, Biϕ, DM, or M2), the RDMS bit rate must be set to twice the user bit rate. Note that the RDMS output clock will clock at twice the user bit rate in this configuration.
Page 85: Ldpc Mode (Soqpskldpc, Stcldpc, Or Oqpskldpc Modes Only)
LDPC encoding is intended to improve performance specifically under harsh conditions, which might have a negative effect on AFC tracking. In general, Quasonix recommends setting the AFC Mode to Off if possible. This recommendation is especially important for the best LDPC performance. Refer to section 4.6.2.18 for additional information about AFC Mode.
Page 86: Video Output Menu
Generation Rack-Mount RDMS™ Figure 103: Advanced Menu, LDPC Mode Figure 104: LDPC Mode Selections Note: LDPC Mode always displays on the Advanced Menu. Selected values are NOT active unless the waveform Mode is SOQPSKLDPC, STCLDPC, or OQPSKLDPC. 4.6.2.21 Video Output Menu...
Page 87: Channel B Output
Generation Rack-Mount RDMS™ Channel A output is the eye pattern. Tape Out outputs the Pre-D signal, and Carrier Only outputs an unmodulated carrier; either of these will be output at the carrier frequency selected by Tape Out Freq (MHz).
Page 88: Channel B Scale
Generation Rack-Mount RDMS™ Figure 108: Video Output Menu, Channel A Scale Selection 4.6.2.21.4 Channel B Scale The Channel B Scale option, shown in Figure 109, adjusts the peak-to-peak amplitude on the Q/Video B output. By default the video output is 1.0000 V peak-to-peak using a standard deviated NTSC video signal. This setting allows the user to compensate for a system where this is not the case.
Page 89: Fm De-Emphasis (Pcm/Fm Mode Only)
Generation Rack-Mount RDMS™ Figure 110: Video Output Menu, Tape Out Frequency Selection 4.6.2.21.6 FM De-emphasis (PCM/FM Mode Only) The FM De-emphasis option, shown in Figure 111, is used to set the FM De-emphasis value to NTSC, PAL, or Off.
Page 90: System Info
Generation Rack-Mount RDMS™ Figure 112: Main Menu, System Settings Selection The System Settings menu includes the following parameters:  System Info  Ethernet  System Update Figure 113: System Settings Menu, System Info Highlighted 4.6.3.1 System Info The System Info screen, shown in Figure 114, is a display only screen. It provides the following information about the RDMS™.
Page 91: Model
Figure 114: System Settings Menu, System Info Displays The System Info screens provide all of the pertinent network settings for the rack unit, including: RDMS model number, Serial Number, System Version, the FPGA version number, software version numbers, DHCP status, IP Address, IP Subnet address, MAC address, Alias, and Secure Name.
Page 92: Gateway
RDMS™ racks may be configured two different ways, depending on the preferred structure. A Group Identifier (ID) is used to provide a unique name for each RDMS™. In the first configuration, racks may be named based on department, such as Lab, Development, Production, Demonstration, etc. In the second configuration, racks may be named for independent users, such as Office1, B4Btest, TestX, etc.
Page 93: Figure 116: Ip Address Selection
Generation Rack-Mount RDMS™ 4.6.3.1.14.2 IP Address The IP Address must be assigned manually when DHCP is not in use on a network. 1. To assign an IP address, use the down arrow on the keypad to highlight the IP Address (Figure 116), then press the Enter key.
Page 94: System Update (Rdms Local Update)
Figure 120: Gateway Selection Figure 121: Gateway Entry 4.6.3.1.14.5 TMoIP Address In an RDMS TMoIP unit, the TMoIP address displays on the Ethernet screen, as shown in Figure 122. The TMoIP address for the rack unit is assigned automatically. Figure 122: TMoIP Address 4.6.3.1.15 System Update (RDMS Local Update)
Page 95: Figure 123: System Update, Perform Local Update Selection
Generation Rack-Mount RDMS™ 2. Transfer the update file to the root directory of a USB thumb drive, then plug the drive into the RDMS via the back port, or via the front port with an adapter.  The USB drive must be 32 GB, or smaller, and must be formatted as FAT32 (Windows) or Ext4 (Linux).
Page 96: Figure 125: Rdms3 Local Update Screen
Figure 126. Figure 126: RDMS3 Local Update Screen, Update File Selected 8. Press Enter to start the update. The RDMS copies the update file from the USB drive and begins the update.  Do not power off the RDMS during the update.
Page 97: Graphics Menu
Generation Rack-Mount RDMS™ Upon completion of the update, the RDMS returns to normal operating mode and all parameters are reset to system defaults. 9. Navigate to the System Settings screen, then select, as shown in Figure 128, to verify that the System Version matches the firmware update version.
Page 98: Figure 130: Pcm/Fm Eye Pattern
Generation Rack-Mount RDMS™ Examples of the Eye Pattern (PCM/FM) (Figure 130), Constellation (SOQPSK) (Figure 131), Constellation (STC) (Figure 136 and Figure 137), and Spectrum (Figure 132 and Figure 133) are shown in the associated figures. Figure 130: PCM/FM Eye Pattern...
Page 99: Figure 134: Mhcpm Constellation
While the spectrum display is virtually the same as the SOQPSK spectrum when the RDMS is running in STC mode, the receiver display looks quite different than the usual SOQPSK constellation, as shown in Figure 136. The individual parts of the display are labeled in Figure 137.
Page 100: Signal Strength
Generation Rack-Mount RDMS™ relative strength of the top antenna, while the length of the green line below the bar represents the strength of the bottom. The small green square within the multicolor bar represents the time difference of arrival in increments of ¼...
Page 101: Figure 138: Main Menu, Graphics Menu Selection And Graphics Menu, Signal Strength
Generation Rack-Mount RDMS™ When Relative is selected, the signal strength displayed is relative to AGC Zero. A value of zero on the front panel signal display, indicates no input signal. A value above zero indicates how strong the signal is above no input.
Page 102: Browser Interface
Browser Interface status The RDMS™ Browser Interface consists of a tool bar at the top of the screen, shown in Figure 139, and five selections that display a variety of parameters for each available channel. The Browser Interface defaults to the Network screen.
Page 103: Figure 140: Network Screen With Multiple Receivers And Active Channels
Generation Rack-Mount RDMS™ Figure 140: Network Screen with Multiple Receivers and Active Channels Figure 141: Network Screen, Closeup of Left Side, Combiners Only Quasonix, Inc.
Page 104: Monitor Screen
The Monitor screen may be accessed via the Monitor buttons on the Network screen, as described previously, or via the Monitor option on the Tool bar, as shown in Figure 143. Figure 143: RDMS™ Browser Interface Tool Bar The unit information displays in the Monitor view, as shown in Figure 144.
Page 105: Figure 145: Monitor Screen For Rdms™ With Only One Channel Available
If the user is operating a single-channel receiver, only Channel 1 displays, as shown in Figure 145. Figure 145: Monitor Screen for RDMS™ with Only One Channel Available Additional status information, such as Frequency, Mode, and Bit Rate, is provided at the bottom of the display when the combiner is On, as shown in Figure 146, or displayed in the center of the screen between Channel 1 and Channel 2 when the combiner is Off, as shown in Figure 147.
Page 106: Signal Graph And Signal Indicators
Generation Rack-Mount RDMS™ Figure 146: Monitor Screen Partial Status Information Block when Combiner On Figure 147: Monitor Screen Partial Status Information Block when Combiner Off 4.7.2.1 Signal Graph and Signal Indicators The Signal Graph, shown in Figure 148, provides a separate window for monitoring the receiver’s constellation or eye pattern.
Page 107: Figure 148: Signal Graph And Signal Indicators Windows
Generation Rack-Mount RDMS™ Figure 148: Signal Graph and Signal Indicators Windows A signal lock indicator provides a visual representation of the demodulator’s current lock-detect state. If the demodulator has locked onto a downconverted signal, a locked (closed) padlock displays. Conversely, if the receiver has not locked onto a signal or has recently lost lock, the indicator turns red and displays as an unlocked padlock icon.
Page 108: Spectrum Graph
10 being the best possible quality. NOTE: The integrated Quasonix demodulator can detect and establish signal lock at very low signal levels. Therefore, it is not uncommon to see a red signal strength bar indicator accompanied with a green signal lock indicator.
Page 109: Diversity Combiner
The Configure screen may be accessed via the Configure buttons on the Network screen, as described previously, or via the Configure option on the Header Tool bar, as shown in Figure 152. Figure 152: RDMS™ Browser Interface Header Tool Bar Quasonix, Inc.
Page 110: Combiner (Optional)
Combiner (Optional) A pre-detection diversity combiner is available as an option for dual-channel receivers. If diversity combining is installed on the RDMS™, it can be enabled by clicking on the check box in the Combiner field, as shown in Figure 153.
Page 111: Figure 154: Configuration Screen With Combiner On, Channel 1 Displays
Generation Rack-Mount RDMS™ Figure 154: Configuration Screen with Combiner On, Channel 1 Displays Figure 155: Configuration Screen with Combiner Off, Channel 1 and Channel 2 Display The Configure screen includes all of the primary settings related to the receiver, including Frequency, Mode, Bit Rate, Data and Clock Polarity, Equalizer, DQ Encapsulation, and Derandomizer.
Page 112: Figure 156: Configure Basic Settings Window-Pcm/Fm Mode
Generation Rack-Mount RDMS™ Figure 156: Configure Basic Settings Window-PCM/FM Mode The settings can be adjusted by clicking on a check box (to enable or disable an option), clicking on a drop down menu and making a selection, or, in the case of Frequency and Bit Rate, typing the number directly or using up/down scroll arrows to select the desired value.
Page 113: Data And Clock Polarity Settings
Generation Rack-Mount RDMS™ 4.7.3.2.1 Data and Clock Polarity Settings The Data Polarity and Clock Polarity are set by clicking on drop down arrow to display the menu, then selecting the desired option, Normal or Inverted, as shown in the Data Polarity example in Figure 158.
Page 114: Configure Advanced Settings
Generation Rack-Mount RDMS™ Figure 160: Configure Basic Settings Window-SOQPSK Mode 4.7.3.3 Configure Advanced Settings The Configure screen also includes a secondary window for Advanced Settings. These include Measured Bit Rate, IF Filter, Output Muting, Muting Timeout, AFC Mode, Best Channel Selector, Time Aligner, Diversity Combiner Mode, PCM Encoding, and LDPC Mode (SOQPSK only), as shown in Figure 161.
Page 115: Measured Bit Rate Setting
Generation Rack-Mount RDMS™ Figure 162: Advanced Settings Window, Video Output Parameters 4.7.3.3.1 Measured Bit Rate Setting Measured Bit Rate displays the receiver’s bit rate on the input signal. This value may be copied and set as the specified bit rate. The purpose of this process is to eliminate unintended bit rate offset error so that the receiver can make full use of its bit synchronizer tracking range, or optionally reduce its tracking range.
Page 116: Output Muting
The AFC (Automatic Frequency Control) Mode option, shown in Figure 164, compensates for frequency offset in the received signal relative to the expected carrier frequency. Demodulators for all modes in the RDMS™ contain frequency-tracking loops that can accommodate some amount of frequency offset. The amount of offset that can be tolerated depends on the mode and is generally a small percentage of the bit rate.
Page 117: Best Channel Selector
Generation Rack-Mount RDMS™ 4.7.3.3.5.2 AFC Mode – Hold When AFC Mode is set to Hold, the AFC holds its current compensation. This mode is best suited for static frequency offsets. It may be advantageous relative to the Acquire mode if the channel is initially “known good” but may become impaired during a mission.
Page 118: Diversity Combiner Mode
4.7.3.4 Diversity Combiner Mode The Quasonix RDMS™ Combiner can operate in one of two modes, Maximal Ratio or Best Source, as shown in Figure 167. Click on the drop down arrow to display the menu, then select the desired option.
Page 119: Pcm Encoding
 Biphase-M: Biϕ, mark The second option allows the transmit encoding to be preserved and output from the RDMS unaltered. To accomplish this, PCM Encoding must be set to NRZ-L – regardless of the actual transmit encoding. Also, for Quasonix, Inc.
Page 120: Ldpc Mode (Soqpskldpc, Stcldpc, Or Oqpskldpc Modes Only)
(i.e., RZ, Biϕ, DM, or M2), the RDMS bit rate must be set to twice the user bit rate. Note that the RDMS output clock will clock at twice the user bit rate in this configuration.
Page 121: Channel A Output
LDPC encoding is intended to improve performance specifically under harsh conditions, which might have a negative effect on AFC tracking. In general, Quasonix recommends setting the AFC Mode to Off if possible. This recommendation is especially important for the best LDPC performance. Refer to section 4.7.3.3.5 for more information about AFC Mode.
Page 122: Channel B Output
Generation Rack-Mount RDMS™ Figure 170: Advanced Settings Window, Channel A Output Drop Down Menu 4.7.3.8 Channel B Output The Channel B Output option, shown in Figure 171, selects what signal appears on the Q/Video B output: Normal, Tape Out, or Carrier Only. The Normal output depends on the selected Mode. For example, in PCMFM, the Normal Channel B output is simply 0V.
Page 123: Tape Output Frequency
Generation Rack-Mount RDMS™ Figure 173: Advanced Settings Window, Channel B Scale 4.7.3.11 Tape Output Frequency The Tape Out Frequency option, shown in Figure 174, sets the carrier frequency for any video output that is set to Tape Output or Carrier Only. The frequency may be selected from a standard set of values. Alternatively, any frequency up to 46.666 MHz may be entered as a custom frequency.
Page 124: Modulation Index Scaling Mode
Generation Rack-Mount RDMS™ Figure 176: Advanced PCMFM Settings Window 4.7.3.13.1 Modulation Index Scaling Mode The Modulation Index Scaling Mode option allows the operator to manually set the modulation scale index. This enables the receiver to operate at the optimum range of modulation desired by the user. The valid modulation scaling index range is 0.350 to 8.000.
Page 125: Mod Scale Index
Save Presets option. Refer to section 4.7.4.1. When the RDMS™ is powered on, the default setting is Acquire, unless the unit was powered off from a preset condition. If the unit was powered off from an unmodified preset setting, then the default condition of Modulation Scaling is as defined in the preset.
Page 126: Phase Noise Compensation
Generation Rack-Mount RDMS™ To change the Modulation Scale Index in the Browser, ensure that the Modulation Index Scaling Mode is set to Hold. If it isn’t, the Modulation Scale Index field is set to read only, as shown in Figure 179. Use the steps in section 4.7.3.13.1 to set and save the scaling mode.
Page 127: Agc Polarity
Generation Rack-Mount RDMS™  AGC Freeze  AGC Zero Mode  D/C Antenna Figure 181: System Antenna Control Window 4.7.3.14.1 AGC Polarity The AGC Polarity option is used to set the automatic gain control polarity. Click on the drop down menu to select Positive or Negative, as shown in Figure 182.
Page 128: Agc Freeze
4.7.3.14.5 AGC Zero Mode The AGC Zero Mode option is shown in Figure 184. The AGC Zero Hold (On/Off) option from the 2nd Generation RDMS was replaced by AGC Zero Mode. There are three available settings, Manual, Hold, or Hold and Save. ...
Page 129: Downconvert Antenna
Generation Rack-Mount RDMS™ Figure 184: System Antenna Control Window, AGC Zero Hold Drop Down Menu 4.7.3.14.6 Downconvert Antenna The DC Antenna option is only available when using the 5-band downconverter AND P and C band are enabled. ...
Page 130: Interfaces Window
Generation Rack-Mount RDMS™ assumed to produce a spectrally inverted signal. The receiver automatically reinverts the signal before it is demodulated. (This is done in the downconversion to 70 MHz IF.) If an actual P band signal is received, it is NOT spectrally inverted and the automatic reinversion done by the receiver improperly causes the signal to appear inverted to the demodulator.
Page 131: Am Polarity
Generation Rack-Mount RDMS™ 4.7.3.15.2 AM Polarity AM Polarity is set by clicking on the drop down menu to select the desired value, Positive or Negative, as shown in Figure 187. Figure 187: Interfaces Window, AM Polarity Drop Down Menu Selections 4.7.3.15.3 AM Scale...
Page 132: Figure 189: Monitor Screen, Rssi Grey - Agc Not Zero
Generation Rack-Mount RDMS™ b. Orient the receiving antenna in a direction that is expected to yield the lowest signal level that the receiver is likely to encounter. Activate AGC Zero under this condition by clicking on the Zero AGC button.
Page 133: Rssi Display
Figure 191: Signal Graph and Signal Indicators Windows, Zero AGC RSSI Display “Relative” 4.7.3.17 Reset to Factory Defaults Button The Reset to Factory Defaults button, shown in Figure 192, sends a command to reset the RDMS hardware to factory default settings. During the process, the Browser Interface is temporarily unavailable.
Page 134: Shutdown Hardware Button
Power must be removed and reapplied. If the user intends to immediately restart the RDMS, it is important to wait until the indication that the unit is offline is received. This takes about 30 seconds, and is typically indicated by an “Unable to connect” message in the browser.
Page 135: Figure 195: Presets Screen
Generation Rack-Mount RDMS™ Figure 195: Presets Screen Figure 196: Presets Screen, Closeup of Left Side Quasonix, Inc.
Page 136: Figure 197: Presets Screen, Closeup Of Right Side
Generation Rack-Mount RDMS™ Figure 197: Presets Screen, Closeup of Right Side The Saved Presets screen contains a list of eight (8) saved setup files. Files are accessed by clicking on the View/Modify button next to the desired preset.
Page 137: Figure 199: Preset: View Or Modify Preset Screen, Preset Name And Description Fields
Preset names are limited to 20 alphanumeric characters, dots, dashes, and spaces. Longer preset names display in the Browser Interface, but may be truncated on the front panel of the RDMS™ when the preset file name exceeds 14 or 15 characters. This does not affect preset functionality.
Page 138: Figure 200: Preset: View Or Modify Preset Screen, Information Successfully Saved Message
Generation Rack-Mount RDMS™ Figure 200: Preset: View or Modify Preset Screen, Information Successfully Saved Message When the user clicks on the Presets option in the Menu bar, the Saved Presets screen displays clearly showing the new preset, as shown in Figure 201.
Page 139: Load Presets
Load Presets Loading a preset configuration is a quick way to set up an RDMS™ with specific settings. The RDMS™ has eight (8) default configurations pre-loaded and ready to use on the receiver. As shown in the previous section, the user may set up and save other configurations for later reuse.
Page 140: About
Generation Rack-Mount RDMS™ 4.7.5 About To access the System Information screen, click on the About option on the Tool bar, as shown in Figure 205. Figure 205: About Option on Tool Bar In addition to displaying the system information, this screen is also used to add a Rack Alias, if desired. Type a new name into the Rack Alias field, as shown in Figure 207, then click on the Rename button.
Page 141: Footer Tool Bar
4.7.6.1 Help The Help option on the Footer Tool bar, provides a link to the Rack-Mount RDMS Installation and Operation manual as well as contact information for Quasonix. The Help screen is shown in Figure 209. Figure 209: Help Screen...
Page 142: Page Access
The closeup images in Figure 211 and Figure 212 show the pages (screens) being accessed, their status, the controlling IP Address for the RDMS receiver, the time when control was acquired, and the length of time the user has been in control.
Page 143: Export
Export Configuration, shown in Figure 214, and Import Configuration provide a way for users to save and retrieve RDMS receiver settings and information. This functionality may be useful to provide a record of settings used during test missions, as a way to quickly switch between receiver setups, or as a way to backup the receiver settings.
Page 144: Admin (Quasonix Factory Use Only)
Note that any settings on the receiver in the selected areas will be overwritten. This includes the Current Configuration. Figure 216: Import Configuration Selection Window 4.7.6.5 Admin (Quasonix Factory Use Only) The Admin link on the footer tool bar is used for Quasonix factory use only. Quasonix, Inc.
Page 145: Figure 217: Quasonix Rdms Administration Window
Generation Rack-Mount RDMS™ Figure 217: Quasonix RDMS Administration Window Quasonix, Inc.
Page 146: Access Via Telnet
Telnet screen is not safeguarded from accidental or improper changes to the receiver’s configuration. It is strongly recommended that users contact Quasonix Technical Support (Tel: 513-942-1287) prior to using the Terminal serial control interface.
Page 147: Figure 220: Connected To Channel 2 In Pcm/Fm Mode
Generation Rack-Mount RDMS™ Figure 220: Connected to Channel 2 in PCM/FM Mode Method 2-Unsubscribe and use a different channel Look at the second Telnet screen again (Figure 221). 1. Follow the on-screen instruction and press the ` key. This is the very first key on the left side of the keyboard under the tilde (~).
Page 148: Figure 223: Rdmsiii Telnet Command Menu-Unsubscribe All Channels
Generation Rack-Mount RDMS™ The command menu is used to unsubscribe from connections and reconnect to a specific channel. Figure 223 shows all connections being unsubscribed. Figure 223: RDMSIII Telnet Command Menu-Unsubscribe All Channels In Figure 224, the user typed a 1 to subscribe (connect) to channel 1. At this point, the user may press the Enter key to continue, as described in Method 1.
Page 149: Figure 224: Rdmsiii Telnet Command Menu-Subscribe To A Specific Channel
Figure 224: RDMSIII Telnet Command Menu-Subscribe to a Specific Channel All Quasonix serial commands are alphabetic characters, followed by 0, 1, or 2 arguments. If the command is issued with arguments, there must be a space after the alphabetic characters. The commands are not case sensitive.
Page 150: Tier 0 (Pcm/Fm), Tier I (Soqpsk-Tg), And Tier Ii (Multi-H Cpm) Commands
Generation Rack-Mount RDMS™ 4.9 Tier 0 (PCM/FM), Tier I (SOQPSK-TG), and Tier II (MULTI-H CPM) Commands The following table describes all receiver user commands. Listed are the command code, name, description of the command, whether specific options must be ordered or the command is standard on all receivers, and whether the command is restricted to specific waveform modes.
Page 151: Table 9: Standard And Optional User Commands
Generation Rack-Mount RDMS™ Table 9: Standard and Optional User Commands Mnemonic Name Description Option (s) Mode Required Restriction Help Message Displays abbreviated list of Standard None available Help commands Antenna Control Report or set antenna control Standard None...
Page 152 Generation Rack-Mount RDMS™ Mnemonic Name Description Option (s) Mode Required Restriction Standard None Combiner Displays and controls Control combiner settings Clock Polarity Report or set clock polarity Standard For Asynch inversion state PSK (legacy) modes, CP A and CP B must...
Page 153 Generation Rack-Mount RDMS™ Mnemonic Name Description Option (s) Mode Required Restriction Standard None Force Lock Diagnostic tool to force the Indication system to indicate locked or unlocked FM Demodulator Display and control FM Standard PCM/FM Settings demodulator settings...
Page 154 Generation Rack-Mount RDMS™ Mnemonic Name Description Option (s) Mode Required Restriction Standard PCM/FM Phase Noise Report or set phase noise Compensation compensation state Reset Defaults Restores factory default Standard None parameters for the unit Default is currently the...
Page 155: Additional Command Set Details
Generation Rack-Mount RDMS™ Mnemonic Name Description Option (s) Mode Required Restriction Show Options Standard None Displays the current hardware configuration and options on the receiver Version Report the current Firmware Standard None (software) version information for the receiver;...
Page 156 Generation Rack-Mount RDMS™ E – E-scan R <r> - Sets antenna mode scan rate to <r>, 10.00 to 50.00 Hz ACU [AM [|S <s>|B ]] – Antenna control unit AM settings - Sets AM output polarity to ...
Page 157: Adaptive Equalizer Control - Aeq
Generation Rack-Mount RDMS™ Valid range is 0.1 to 1000.0 ms 4.9.1.2 Adaptive Equalizer Control – AEQ The AEQ command displays and controls adaptive equalizer settings. AEQ [<e>| H {E|Q}|HE<t>|HQ <t>|HD <t>] <e> - Sets adaptive equalizer enable to <e>...
Page 158 Generation Rack-Mount RDMS™ 1 – Enabled C R <r> - Sets power centering rate to <r>, 0 to 65535 AEQ [N {C <c>|L <l>}] N C <c> - Sets added noise coefficient to <c>, 0.000015 to 0.999985 N L <l> - Sets added noise limit to <l>, 0.000015 to 0.999985 AEQ [P {T <t>|S <s>}]...
Page 159: Automatic Frequency Control - Afc
Generation Rack-Mount RDMS™ -100.000 sets equalizer hold to Off AEQ T 0 Disable equalizer information tracking display AEQ T 1 Enable equalizer information tracking display 4.9.1.3 Automatic Frequency Control – AFC The Automatic Frequency Control command reports or sets various AFC parameters.
Page 160 Generation Rack-Mount RDMS™ AFC H – Sets the automatic frequency control hold threshold below Eb/N0 Example: AFC H 6.000 Set AFC to automatically hold tracking below 6.000 dB E Valid range is -20.000 dB to 30.000 dB; -100.000 dB is Off AFC L –...
Page 161: Automatic Gain Control - Agc
Generation Rack-Mount RDMS™ 4.9.1.4 Automatic Gain Control – AGC The Automatic Gain Control command reports and sets a variety of AGC parameters. Additional AGC commands are described in separate subsections 4.9.1.4.1 through 4.9.1.4.7. AGC [-V] – Shows advanced AGC status AGC [<e>] –...
Page 162: Automatic Gain Control Data Settings - Agc Data
Generation Rack-Mount RDMS™ The bulk attenuation switch out threshold is forced to match the switch in threshold when the AGC is in IF mode. This is to prevent the AGC from attempting to switch the bulk attenuator while using a path that doesn’t have a bulk attenuator.
Page 163: Automatic Gain Control Mode - Agc M
Generation Rack-Mount RDMS™ SAVE – Save data Example: AGC DATA 2.2 E MIN Set AGC table attenuation to 2.2 dB for attenuator E with attenuation of minimum 4.9.1.4.3 Automatic Gain Control Mode – AGC M The AGC M command sets the automatic gain control loop mode.
Page 164: Automatic Gain Control Attenuator Look Up Table - Agc Lut
Generation Rack-Mount RDMS™ Valid range is 0.000 to 5.464 µs AGC L S 1.987 Set AGC sample time to 0.567 µs Valid range is 0.000 to 2.732 µs AGC L A 42.000 Set AGC averaging sample time to 42.000 ms Valid range is 0.002 to 2100.897 ms...
Page 165: High Speed Output Mixer Settings - Ahm
Generation Rack-Mount RDMS™ M – Manual: Manually set AGC zero level, reset on frequency or IF bandwidth change, reset on power cycle H – Hold: Manually set AGC zero level, NO reset on frequency or IF bandwidth change, reset on power cycle S –...
Page 166: High/Low Speed Outputs
Generation Rack-Mount RDMS™ 0 – Disabled 1 – Enabled Examples: high speed (video) mixer at 0.0000 MHz Channel DAC A mixer disabled Channel DAC B mixer disabled Channel DAC C mixer disabled Channel DAC D mixer disabled AHM x Sets mixer frequency for all channels in MHz Valid range is -46.6667 to 46.6667 MHz...
Page 167: Analog High Speed Output - Aho
Generation Rack-Mount RDMS™ The commands AHO, ALO, DHO, and DLO are the source control commands for the platform. These commands control source, (for analog outputs, scale, offset,) and polarity.  AHO – Analog High-Speed Outputs  ALO – Analog Low-Speed Outputs ...
Page 168 Generation Rack-Mount RDMS™  F1 – Fixed value 1 sets the channel polarity to one of the values below:  {0|+} – Active high (normal)  {1|-} – Active low (inverted) S <s> sets the channel scale to a value between -128.0000 and 127.9961 O <o>...
Page 169: Analog Low Speed Output - Alo
Generation Rack-Mount RDMS™ Scale - 1.0000 Offset - 0.0000 Polarity – High (+) 70 MHz modulator disabled AHO B P1T Sets the channel to Channel DAC B with Physical channel 1 tape output source; (Needs mixer) AHO D S -42.0000 Sets the channel to Channel DAC D with a channel scale of -42.0000...
Page 170 Generation Rack-Mount RDMS™  DQDEC – DQ decode  DQDP – DQ datapath  DQOUT – DQ output  DS0 – DSP SNR 0  DS1 – DSP SNR 1  EA0 – External AGC 0  EA1 – External AGC 1 ...
Page 171: Digital High Speed Input - Dhi
Generation Rack-Mount RDMS™ Example: Displays current low speed (ACU) output status settings (enabled/disabled and output frequency) low speed (ACU) Channel A (AM) Source Demodulated AM Scale - 1.0000 Offset - 0.0000 Polarity – High (+) low speed (ACU) Channel B (Aux Analog A Out)
Page 172: High Speed Digital Output - Dho
Generation Rack-Mount RDMS™ DHI [<s> ] – Sets source <s> polarity to where: <s> - Input source TH5 – Top Hat 5 TH7 – Top Hat 7 - Input polarity {0|+} – Active high (normal) {1|-} – Active low (inverted) 4.9.1.6.4...
Page 173: Low Speed Digital Input - Dli
Generation Rack-Mount RDMS™ BC - Clock B BD - Data B DP0 - Datapath 0 DP1 - Datapath 1 DP2 - Datapath 2 DP3 - Datapath 3 DP4 - Datapath 4 DP5 - Datapath 5 DP6 - Datapath 6 DP7 - Datapath 7 DHO [<c>...
Page 174 Generation Rack-Mount RDMS™ <c> - Input channel UR0 – UART Rx 0 UR1 – UART Rx 1 <s> - Signal source F0 – Fixed 0 F1 – Fixed 1 URX – UART Rx TH8 – Top Hat 8 TH9 –...
Page 175: Low Speed Digital Output - Dlo
Generation Rack-Mount RDMS™ - Input polarity {0|+} – Active high (normal) {1|-} – Active low (inverted) 4.9.1.6.6 Low Speed Digital Output – DLO DLO displays and controls low speed digital output settings. DLO [<c> <s>] - Sets channel <c> to source <s>...
Page 176: Low Speed Mixer Control - Alm
Generation Rack-Mount RDMS™ DP7 - Datapath 7 DLO [<c> ] - Sets channel <c> polarity to where: <c> - Output channel UTX - UART Tx TH3 - Top Hat 3 TH4 - Top Hat 4 TH6 - Top Hat 6...
Page 177: Lock Status Command - Al
Generation Rack-Mount RDMS™ 0 – Disabled 1 – Enabled Examples: ALM x Sets mixer frequency for all channels in MHz Valid range is -46.6667 to 46.6667 MHz ALM c x Sets a specific channel (c) mixer to enabled or disabled...
Page 178: Bit Rate - Br
Generation Rack-Mount RDMS™ CH1 - Channel 1 INT - Internal <e> - Enable 0 - Disabled 1 – Enabled Example: PCMFM$bcs BCS enabled BCS threshold 192 BCS pin hold delay 2^2 cycles System status display elements: - Best channel selector 4.9.1.10 Bit Rate –...
Page 179 Generation Rack-Mount RDMS™ <e> - Sets combiner enable to <e> where: <e> - Enable 0 – Disabled 1 – Enabled M <m> - Sets combiner operation mode to <m> where: <m> - Operation Mode M – Maximal Ratio B –...
Page 180 Generation Rack-Mount RDMS™ MB - Sets combiner maximum bandwidth to , 0.000001 to 10.000000 L <f> - Sets combiner frequency error limit to <f>, .00000002173 to 23.3333 of bit rate Z <v> - Sets combiner loop zeta to <v>, 0.001 to 10.000 CMB [BI <t>|BO <t>] –...
Page 181: Clock Polarity - Cp
Generation Rack-Mount RDMS™ 4.9.1.12 Clock Polarity – CP The Clock Polarity command displays and controls clock output polarity. CP [] – Sets clock component output polarity - Set clock polarity to where: - Polarity {0|+} – Active high (normal) {1|-} –...
Page 182: Digital Output Muting - Dom
Generation Rack-Mount RDMS™ 0 – Disabled 1 – Enabled Example: differential decoder disabled 4.9.1.15 Digital Output Muting – DOM The Digital Output Muting command displays and controls lock detect controlled output settings. DOM [<e>|T <t>|C <e>|D <e>] <e> - Sets the output muting enable to <e>...
Page 183: Data Quality Encapsulation - Dq
Generation Rack-Mount RDMS™ {0|+} – Active high (normal) {1|-} – Active low (inverted) Examples: Data polarity active High (+) DP 0 Set data polarity to NOT inverted (Off) DP 1 Set data polarity to inverted (On) 4.9.1.17 Data Quality Encapsulation – DQ The Data Quality command displays and controls data quality settings.
Page 184: Derandomizer State - Dr
Generation Rack-Mount RDMS™ - Data quality LUT index , 0 to 255 <v> - Data quality LUT value <v>, 0.0000 to 0.999985 DQ [M <e> [<r>]] - Sets data quality encapsulation dump enable to <e> at rate <r>...
Page 185: Digital Status Output - Dso
Generation Rack-Mount RDMS™ Examples: Derandomizer none DR M I Derandomizer IRIG 4.9.1.19 Digital Status Output – DSO There are two generic discrete digital outputs that are normally lock status and sync detect (used for synchronization time testing) but also have other potential sources. The Digital Status Output command controls the source, polarity, and override states.
Page 186: Forward Error Correction - Fec
Generation Rack-Mount RDMS™ Sync detect output = Sync detect active High (+) normal operation 4.9.1.20 Forward Error Correction – FEC Forward Error Correction requires the K7 option in the serial number. The FEC command displays and controls Forward Error Correction settings.
Page 187: Fm Demodulator Settings - Fm
Generation Rack-Mount RDMS™ Examples: Lock is normal System lock is active Datapath lock is active FL 0 Force lock to Normal FL 1 Force lock to On FL -1 Force lock to Off 4.9.1.22 FM Demodulator Settings – FM The FM command displays and controls FM demodulator settings.
Page 188: Fm Video Bandwidth Control - Fm B
Generation Rack-Mount RDMS™ 4.9.1.22.1 FM Video Bandwidth Control – FM B The FM B x command adjusts the I/Q (video) output bandwidth with PCM/FM in mind. Setting the FM (video) bandwidth wider than it would normally be set by the bit rate (this would be 1.1 to 1.4 wider than the bit rate) configures the system to allow a higher bandwidth on the output while allowing normal PCM/FM demodulation on the lower frequency PCM/FM.
Page 189: Frequency - Fr
Generation Rack-Mount RDMS™ Modulation H 0.701 4.9.1.24 Frequency – FR The FR command displays and controls receiver frequency. FR [<f>] – Sets receiver to <f> in MHz where: <f> - Receiver frequency P band: 200.0 to 1150.0 MHz CT band: 1150.0 to 2500.0 MHz...
Page 190 Generation Rack-Mount RDMS™  Each parameter may be either a value parameter to the command or a command control parameter that specifies the operation of the command. <command> <parameter 1> <parameter 2> ...  In general, a command with no parameters will display the commands associated status.
Page 191: If Filter Control - If
Generation Rack-Mount RDMS™ 4.9.1.27 IF Filter Control – IF The IF filter control command displays and controls the filter selections. IF filters may be set to automatic based on the bit rate or the second IF filter may be set to a value based on a filter index.
Page 192: Modulation Index - Mi
Generation Rack-Mount RDMS™ 1k1 – 1k Rate 1/2 4k2 – 4k Rate 2/3 1k2 – 1k Rate 2/3 4k4 – 4k Rate 4/5 1k4 – 1k Rate 4/5 A <t> - Sets ASM threshold to <t>, 0 to 65535. This is not a stored parameter.
Page 193: Modulation - Mo
Generation Rack-Mount RDMS™ P <e> - Sets the modulation index scale parameter (mode and H value) persistence to <e> where: <e> - Enable 0 – Disabled 1 – Enabled MI [TS {M |T |H }] M - Sets modulation index trellis maximum index to , 0.000 to 8.000 T ...
Page 194 Generation Rack-Mount RDMS™ {2|MhCPM} – Multi-h Continuous Phase Modulation {3|BPSK} – Bi-Phase Phase Shift Keying {4|QPSK} – Quadrature Phase Shift Keying {5|AQPSK} – Asymmetrical Quadrature Phase Shift Keying {6|AUQPSK} – Asymmetrical/Unbalanced Quadrature Phase Shift Keying {7|OQPSK} – Offset Quadrature Phase Shift Keying {8|UQPSK} –...
Page 195: Output Clock Measurement - Ocm
Generation Rack-Mount RDMS™ 4.9.1.31 Output Clock Measurement – OCM The Output Clock Measurement command displays measured output clock frequency. Most of the time this is the same as the commanded bit rate but, depending on encoding/decoding and other factors, this may or may not be the commanded bit rate.
Page 196: Parameters Erase - Per
Generation Rack-Mount RDMS™ The current operating parameters are volatile in nature in that when the power is removed, the parameters are lost. The stored parameters are saved in FLASH memory in the receiver brick. When the receiver brick is turned on, the stored parameters are loaded into the current operating parameter set.
Page 197: Reset To Factory Defaults - Rfd
Generation Rack-Mount RDMS™ where: 0.0 to 126.0 dB using AGC table 4.9.1.33.7 Reset to Factory Defaults – RFD The Reset to Factory Defaults command erases the stored parameter set for ALL modes then resets the current operating parameter set to the defaults including mode (it changes to the default mode).
Page 198: Phase Noise Compensation - Pnc
Generation Rack-Mount RDMS™ Examples: Input dBm Atten dB Signal dBm Adj dBm Eb/N0 dB Saturation 60.48 59.750 -3.43 13.03 27.30 Power leveling automatic Power leveling active Power level target power 13.00 dB Power level scale 0.00 dB Power level measurement signal + noise...
Page 199: Query Temperature - Qt
Generation Rack-Mount RDMS™ PNC 1 Set phase noise compensation to On 4.9.1.36 Query Temperature – QT The Query Temperature command reports the temperature in degrees Celsius. Example: FPGA temperature: 41.0 C (85 C Max) Demod temperature: 43.0 C (85 C Max) 4.9.1.37 Signal Degradation Information –...
Page 200 Generation Rack-Mount RDMS™ -1 – Forced inactive I <t> - Sets internal threshold to <t>, 0 to 65535, or A for automatic E <t> - Sets external threshold to <t>, 0 to 65535, or A for automatic Examples:...
Page 201: Spectrum Inversion - Si
0 – Disabled 1 – Enabled Example: Spectrum inversion is disabled 4.9.1.39 Show Serial Number – SN The SN command displays the part number and serial number for the connected RDMS™. Example: Part Number: QSX-RDMS-3R1D-A1-1311-00-14-K7-EQ Customer Model: CHANNEL 1 Serial Number: 2091 Hardware Rev: 4.9.1.40 Save Parameters –...
Page 202: System Status Tracking - Sys
Generation Rack-Mount RDMS™ Saving parameter data... ok 4.9.1.41 System Status Tracking – SYS The SYS command displays system status and allows specification of the format: Normal (narrow), Wide (verbose), and CSV (Comma Separated Values). If “-h” is added to the command string, the header will not be displayed.
Page 203 Generation Rack-Mount RDMS™ <c> [<s>] - (Command <c> and subcommand <s>) BEOL – Beginning/End of line marker List of optional items/parameters that can be displayed. Parameter Description TOD ST System time TOD DT Date/Time of day (can be set with the TOD Command)
Page 204: Tape Out - To
Generation Rack-Mount RDMS™ SYS [ALL <f> <e>] – Sets all system status elements (items/parameters) in style <f> to <e> where: <f> - Format (last used, if not specified) N - Normal W - Wide C - CSV A - All above <e>...
Page 205 Generation Rack-Mount RDMS™ <c> - Analog output channel A - Channel A B - Channel B where: <m> - Mode 0 - Disabled 1 - Enabled C – Carrier F <f> - Sets the tape output frequency to <f>, -46.6667 to +46.6667 MHz I <f>...
Page 206: Time Of Day - Tod
Generation Rack-Mount RDMS™ 4.9.1.43 Time of Day – TOD The Time of Day command displays and sets the current calendar date and time of day values. This is primarily used to add a hard reference to the BERT (BER command) output. It is volatile and must be reset after every power cycle or mode change.
Page 207: Version - Ve
Generation Rack-Mount RDMS™ Enabled modes: MHCPM SOQPSK PCMFM Pin out: 00 – Standard Options: EQ – Adaptive Equalizer 14 – 14 SAW Filters K7 – Viterbi decode (k = 7 rate = 1/2) 4.9.1.45 Version – VE The Version command displays the current application, FPGA, and adaptive equalizer versions.
Page 208: Performance Specifications
The rack-mount receiver requires 100 to 240 VAC, 50/60 Hz power. 5.2 RF Frequency Error By default, the RDMS™ is capable of acquiring a signal with a frequency error of up to ±100 kHz. 5.3 Bit Error Rate The RDMS™ meets the following BER limits, when tested with a signal source, which complies with IRIG 106-17.
Page 209: Synchronization
Figure 225: BER Performance for Tier 0, I, and II 5.4 Synchronization The RDMS™ offers very fast, reliable acquisition, even at very low signal to noise ratio. Synchronization time is a function of modulation type and IF frequency error. Typical SOQPSK results (from 10,000 synchronization trials) are shown in Figure 226.
Page 210: Figure 226: Synchronization Time At Various Signal-To-Noise Ratios
Generation Rack-Mount RDMS™ Figure 226: Synchronization Time at Various Signal-to-Noise Ratios Quasonix, Inc.
Page 211: Rf Input
Generation Rack-Mount RDMS™ 5.5 RF Input Available band configurations are shown in Table 2. Two additional band codes are described in section 1.2.3.1. The input impedance is 50 ohms. Table 11: Band Configuration Codes Extended 1415.0 Extended 1585.0 1650.0...
Page 212: Additional Band Codes
Generation Rack-Mount RDMS™ 5.5.1 Additional Band Codes Two additional band codes are available:  Band Code 7: Through the IF Input: 70 MHz through SAW filters, 0.075 MHz-20 MHz, 70 MHz  Band Code T: 2025.0 MHz to 2110.0 MHz standard range...
Page 213: Maintenance Instructions
Generation Rack-Mount RDMS™ Maintenance Instructions The Rack-Mount receiver requires no regular maintenance. Please consult the factory for any maintenance, upgrade, or repair requirements. Quasonix, Inc.
Page 214: Product Warranty
Generation Rack-Mount RDMS™ Product Warranty The RM RDMS™ carries a standard parts and labor warranty of two (2) years from the date of delivery. Quasonix, Inc.
Page 215: Technical Support And Rma Requests
Technical Support and RMA Requests In the event of a product issue, customers should contact Quasonix via phone (1-513-942-1287) or e-mail (support@quasonix.com) to seek technical support. If Quasonix determines that the product issue must be addressed at the factory, a returned materials authorization (RMA) number will be provided for return shipment.
Page 216: Appendix A - Bit Error Rate Testing
Generation Rack-Mount RDMS™ Appendix A – Bit Error Rate Testing There is a separate BERT for each data path in the receiver (0 main channel, 1 combiner channel). By default all commands are targeted to the current “tracking channel”, 0 or 1.
Page 217 Generation Rack-Mount RDMS™ Mnemonic Name Description BER DQ Set AGV DQ Sets average DQ for output (OUT) or datapath (DP) display enable to <e> BER [DQ {OUT|DP} <e>] where: <e> - Enable 0 - Disabled 1 - Enabled...
Page 218 Generation Rack-Mount RDMS™ Mnemonic Name Description BER M BERT Display current BERT measurement status in a specific style Measurement BER [M <s>[-h]|?] Status where <s> - Style N - Normal W - Wide C - CSV Options: -h - Do not display header...
Page 219 Generation Rack-Mount RDMS™ Mnemonic Name Description BER T n Set Bit Error Sets bit error measurement type Measurement The test type can be configured to run continuously or stop when Type either a time limit, bit count, or error count has been reached. The error count limit guarantees a minimum number of errors.
Page 220: Test Noise Commands
Generation Rack-Mount RDMS™  The 'E' column indicates the BERT is enabled by displaying a pound sign '#'. If the BERT is not enabled, this column is blank.  The 'R' column indicates the BERT is actually running and making a measurement by displaying a '!'. If the BERT is not running, this column is blank.
Page 221: Table 13: Test Noise Commands
Generation Rack-Mount RDMS™ The AWGN command, described in Table 13, displays and controls Additive White Gaussian Noise settings. Table 13: Test Noise Commands Mnemonic Name Description AWGN ? Test Noise Help Provides help for using the test noise commands...
Page 222: Appendix B - Recommended Am And Agc Settings For Acu Interfaces
Generation Rack-Mount RDMS™ Appendix B – Recommended AM and AGC Settings for ACU Interfaces 10.1 AM and AGC In a typical flight test scenario, Automatic Gain Control (AGC) tracks out slow variations in received signal strength. Ideally, the net received signal has constant signal strength except for higher-frequency amplitude modulation (AM) induced by the antenna tracking mechanism.
Page 223 Generation Rack-Mount RDMS™ For example, suppose a conical scan system with no undesired low-frequency AM has a scan rate of 30 Hz. This system has a recommended AGC Time Constant of 1000 / 30 = 33.3 ms, and an AM Bandwidth of 5 * 30 = 150 Hz, with AGC Compensation OFF.
Page 224: Appendix C - Phase Noise Compensation
Generation Rack-Mount RDMS™ Appendix C – Phase Noise Compensation 11.1 Trellis Demodulation Basics Legacy Single-Symbol Detection:  Uses basic Limiter-Discriminator operation  Frequency in this bit above nominal → data = 1  Frequency in this bit below nominal → data = 0 ...
Page 225: Trellis Demodulation Summary
Generation Rack-Mount RDMS™ Figure 228: Phase Trajectory Never Forgets 11.1.1 Trellis Demodulation Summary The basic premise of trellis demodulation is that the signal from the transmitter follows a known path through the phase tree. When the demodulator knows this, it can use a sequence of several symbols to help make better decisions about each individual bit.
Page 226: Phase Noise Impact
This increase in bandwidth does have a tradeoff. A wider tracking range allows the RDMS to deal with the additional jitter, but it may also increase synchronization times slightly, and slightly increase the minimum SNR at which the RDMS declares lock.
Page 227: Know Your Transmitter
Generation Rack-Mount RDMS™ Figure 231: "Clean" Eye Pattern 11.5 Know Your Transmitter If you know the brand and type of transmitter, these tips can help determine when to use PNC. If your transmitter was manufactured by these companies, PNC should be OFF: ...
Page 228: Appendix D - Pcm Framer/Deframer Function
Appendix D - PCM Framer/Deframer Function Quasonix RDMS™ receivers recognize PCM frames as defined by IRIG 106-17 Chapter 4 and Appendix 4-A. The receiver can provide basic processing of a large subset of possible frame configurations, including sync word detection, subframe ID checking, and data extraction from the frame structure (without decommutation).
Page 229: Pcm Deframer
SFID (if present) to leave only the frame data. If the fame data is a known pattern, it can be monitored by a BERT to measure link performance. The RDMS™ receiver can output PCM frame lock and/or SFID valid indications on the DEMOD_LOCK and/or ONES_DETECT back-panel outputs. Refer to the RDMS™ data sheet for more information about these outputs.
Page 230: Appendix E - How To Configure Tape Output
The method for configuring Tape Output has been updated. Refer to section 4.6.2.21 Video Output Menu for front panel control and section 4.7.3.7 Channel A Output, etc., for Browser Interface control. This appendix is also available on the Quasonix web site as a stand alone document: How to Configure the Tape Output on a 3 Generation Rack-Mount RDMS Telemetry Receiver.
Page 231: Commands
Generation Rack-Mount RDMS™ 13.2 Commands After connecting to Channel 1, Channel 2, or Channel 3 (the combiner), the command prompt displays. The following commands configure the Tape Out on Q/Video B. Anything past the ‘#’ is a comment, and can be discarded.
Page 232: Troubleshooting
Video D Combiner Figure 234: 3U Rear Panel 13.4 Troubleshooting If you are still having difficulties at this point, contact Quasonix technical support. Quasonix Technical Support (1-513-942-1287) or email (support@quasonix.com) When calling technical support, it will speed things up if you have the following information handy:...
Page 233 Generation Rack-Mount RDMS™  Model number ***Note that this is different from the customer part number.***  Serial number  Software Version It is also helpful if you can call from a phone in your lab so our tech support people can actually walk you through setting, checking, and controlling your receiver.
Page 234: Appendix F - Factory Reset Values
Generation Rack-Mount RDMS™ Appendix F – Factory Reset Values When a reset command is activated, the frequency defaults to the lowest valid frequency for the lowest authorized band on the unit. The reset priority is: 1. PCM/FM 12. SOQPSK 13.
Page 235: Table 18: Soqpsk Factory Reset Values
Generation Rack-Mount RDMS™ Table 18: SOQPSK Factory Reset Values Parameter Reset State Bit Rate Modulation Scaling Normal Clock Polarity Normal Data Polarity Disabled Derandomizer Enabled Differential Decoder Auto IF Filter Disabled Downconvert Antenna Manual AGC Zero Mode Convolutional Decoder...
Page 236: Table 19: Multi-H Cpm Factory Reset Values
Generation Rack-Mount RDMS™ Table 19: Multi-h CPM Factory Reset Values Parameter Reset State Bit Rate Modulation Scaling Normal Clock Polarity Normal Data Polarity Disabled Derandomizer Differential Decoder Auto IF Filter Disabled Downconvert Antenna Manual AGC Zero Mode Convolutional Decoder...
Page 237: Table 20: Qpsk Factory Reset Values
Generation Rack-Mount RDMS™ Table 20: QPSK Factory Reset Values Parameter Reset State Bit Rate Modulation Scaling Normal Clock Polarity Normal Data Polarity Disabled Derandomizer Differential Decoder Auto IF Filter Disabled Downconvert Antenna Manual AGC Zero Mode Disabled Convolutional Decoder...
Page 238: Appendix G - Special Considerations For International Applications
An incorrect IP address separator results in the RDMS™ Browser Interface being unable to connect to the PC. Any separator other than a period ( . ) is unrecognizable by the RDMS™ software. Some regions use a comma ( , ) instead of a period to separate the fractional part of decimal numbers.
Page 239: Figure 236: Region And Language Selection
Generation Rack-Mount RDMS™ 16. When the Computer Settings window displays, click on the Region and Language selection (labeled 2 in Figure 236). This causes the Region and Language window to display (labeled 3 in Figure 236). Figure 236: Region and Language Selection 17.
Page 240: Figure 237: Customize Format Window
Generation Rack-Mount RDMS™ Figure 237: Customize Format Window 18. Use the down arrow in the List Separator column to change the comma to a period. Click on the OK button to complete the change and close the window.
Page 241: Appendix H - Rdms With -Ip Option
16.2 Hardware The 3U Rack-Mount RDMS back panel provides connectors used specifically with the -IP (TMoIP) option. The full back panel is shown in Figure 238. An enlarged view of the right side with TMoIP connectors is shown in Figure 239.
Page 242: Figure 239: 3 Rd Generation Rdms 3U Back Panel Connectors-Right Side
Generation Rack-Mount RDMS™ Figure 239: 3 Generation RDMS 3U Back Panel Connectors-Right Side The ports used specifically for TMoIP operation are described in Table 22. EVTM ports are NOT enabled when using TMoIP. Table 22: 3U Rack-Mount RDMS TMoIP Ports...
Page 243: Set Up Tmoip Ip Address
However, multiple browser interfaces can monitor an individual receiver’s status at once. The RDMS™ Browser Interface consists of a tool bar at the top of the screen, shown in Figure 139, with six selections that display a variety of parameters for each available channel. The Browser Interface defaults to the Network screen.
Page 244: Tmoip Monitor/Configure Screen
Figure 242: Browser Interface Header Tool Bar for RDMS™ with TMoIP Option The RDMS Network, Monitor, Configure, Presets, and About screens are described in section 4.7 of this manual. The TMoIP functionality is accessed via the TMoIP tab, as shown in Figure 243. Detailed information about each TMoIP screen is found in the NetAcquire®...
Page 245: Tmoip Network Screen
Generation Rack-Mount RDMS™ Figure 245: TMoIP Monitor/Configure Screen with TMoIP Channel Selected 16.4.2 TMoIP Network Screen The TMoIP Network screen, shown in Figure 246, configures the TMoIP network interfaces. The last interface listed in the left pane, Net 2, is not used.
Page 246: Tmoip Serial I/O Screen
Generation Rack-Mount RDMS™ 16.4.3 TMoIP Serial I/O Screen The TMoIP Serial I/O screen, shown in Figure 247, updates status and configures serial input channels for TMoIP. Figure 247: TMoIP Serial I/O Screen 16.4.4 TMoIP Log Screen The TMoIP Log screen, shown in Figure 248, displays NetAquire server message log entries.
Page 247: Tmoip System Screen
Generation Rack-Mount RDMS™ 16.4.5 TMoIP System Screen The TMoIP System screen is shown in Figure 249. It provides links to a variety of configuration and status screens. The default view contains basic links used by most operators but additional links may be displayed by clicking on the Advanced View check box.
Page 248: Appendix I - Rdms Recovery Mode
When the RDMS enters recovery mode, a Recovery App is displayed on the front panel, as shown in Figure 251, and any accesses via the Browser Interface are forwarded to a Recovery Page, as shown in Figure 252.
Page 249: Option 1 - Boot Existing Version
In Recovery Mode, the RDMS uses the same addressing method (static or dynamic) that it was last configured with to obtain an IP address. If it was configured with a static address, the RDMS will still be addressable via this static address.
Page 250: Option 2 - Sd Card Update
17.2 Option 2 - SD Card Update If the RDMS cannot be recovered through the use of Option 1, the next best option is to use the SD Card Update process. This method uses an update card, provided by Quasonix, to perform a fresh install of the system firmware.
Page 251: Figure 256: Browser Interface Recovery Screen, Network Update
Generation Rack-Mount RDMS™ When the RDMS is accessed via a browser directed to its IP address, the Recovery Mode page displays, as shown previously in Figure 252. This method uses a firmware update file, provided by Quasonix, in conjunction with the Browser Interface.
Page 252: Appendix J - Acronym List
Generation Rack-Mount RDMS™ 18 Appendix J – Acronym List Acronym Description Automatic Gain Control Amplitude Modulation AQPSK Variant of Quadrature Phase Shift Keying ARTM Advanced Range Telemetry AUQPSK Variant of Quadrature Phase Shift Keying Bit Error Probability Bit Error Rate...
Page 253 Generation Rack-Mount RDMS™ Acronym Description Megahertz (connector type) Threaded RF connector OQPSK Offset Quadrature Phase Shift Keying PCMFM Pulse Code Modulation/Frequency Modulation Phase Modulation Phase Shift Keying QPSK Offset Quadrature Phase Shift Keying RDMS Receiver DeModulator Synchronizer Radio Frequency...

Quasonix RDMS Installation And Operation Manual

1 Introduction

2 Specifications

3 Installation Instructions

4 Operating Instructions

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