Page 1 HP 37718A HP 37719A Installation and Veriﬁcation Manual HP OmniBER 718/719...
Page 2 HP Part No. 37718-90069 or merchantability and ﬁtness for a particular First Edition, May 99 purpose. Printed in U.K.
Page 3 Installation and Veriﬁcation Manual HP Part Number 37718-90069 Printed in U.K. May 1999 HP OmniBER 718/719...
Page 5: Table Of Contents
Instruments Covered By Manual 1-4 Storage and Shipment 1-4 Repackaging for Shipment Weight and Dimensions 1-5 Safety Precautions for the Operator 1-6 Lifting/Carrying the HP 37718A/19A 1-6 Safety Symbols 1-7 Operators Maintenance 1-8 Cleaning 1-8 Power Supply Fuse Replacement 1-9...
Page 6 Contents Connecting to the Power Supply 2-4 Connecting to the Network 2-6 All Connectors 2-6 Electrical Interface Connectors 2-6 Optical Interface Connectors 2-9 Connecting Accessories 2-11 10 Base-T Lan Connection Radiated Emissions 2-11 Hewlett-Packard Interface Bus 2-12 Additional Precautions for Service Engineers 2-14 Safety Precautions 2-14 ESD Precautions 2-14 Front Panel Soft Recovery (Cold Start) 2-16...
Page 7 Contents Speciﬁcation 3-15 Equipment Required 3-16 Procedure - 34.368 Mb/s 3-19 Procedure - 8.448 Mb/s 3-21 Procedure - 2.048 Mb/s 3-23 Procedure - DSX-3 3-26 Procedure - DSX-1 3-28 PDH/DSn Receiver Equalization 3-32 Speciﬁcations 3-32 Description 3-32 Equipment Required 3-32 Procedure 3-33 PDH/DSn Receiver Monitor Levels 3-39 Speciﬁcations 3-39...
Page 8 Contents Description 3-64 Equipment Required 3-64 Procedure 3-64 STM-0/STS-1 Transmitter Output Waveshape 3-66 Speciﬁcations 3-66 Description 3-66 Equipment Required 3-66 Procedure 3-66 STM-1/STS-3 Transmitter Output Waveshape 3-70 Speciﬁcations 3-70 Description 3-70 Equipment Required 3-70 Procedure 3-70 SDH/SONET Receiver Equalization 3-75 Speciﬁcations 3-75 Equipment Required...
Page 9 Contents TX/RX Jitter Accuracy Test Setup, Ranges (1/1.6 UIp-p) 93 External Jitter Generation and Demod Output 98 SDH Transmit/Receive Jitter Amplitude Accuracy 101 Speciﬁcations 101 Description 101 Equipment Required 102 Procedure 103 External Jitter Generation and Demod Output 117 Performance Test Record 121 Jitter Performance Test Record (options 204, 205 &...
Page 10 Contents viii...
Page 11: General Information Warranty
Replacement products may be either new or like-new. 2 HP warrants that HP software will not fail to execute its programming instructions, for the period speciﬁed above, due to defects in material and workmanship when properly installed and used.
Page 12: Responsibilities Of The Customer
SATISFACTORY QUALITY, AND FITNESS FOR A PARTICULAR PURPOSE. 8 HP will be liable for damage to tangible property per incident up to the greater of $300,000 or the actual amount paid for the product that is the subject of the claim, and for damages for bodily injury or death, to...
Page 13: Certiﬁcation
General Information Warranty safeguarding and protection from wrongful use.) 4 Routine operator maintenance and cleaning as speciﬁed in the Hewlett-Packard Operating and Service Manuals. 5 Consumables such as paper, disks, magnetic tapes, ribbons, inks, pens, gases, solvents, columns, syringes, lamps, septa, needles, ﬁlters, frits, fuses, seals, detector ﬂow cell windows, etc.
Page 14: Instruments Covered By Manual
General Information Instruments Covered By Manual Instruments Covered By Manual Attached to the rear panel of the instrument is a serial number plate. The serial number plate has a two letter reference denoting country of origin (GB = Great Britain) and an eight digit serial number. The serial number is unique to each instrument and should be quoted in all correspondence with Hewlett-Packard, especially when ordering replacement parts.
Page 15: Weight And Dimensions
General Information Weight and Dimensions Original Packaging. Containers and materials identical to those used in factory packaging are available from Hewlett-Packard ofﬁces. If the instrument is being returned to Hewlett-Packard for servicing, attach a tag indicating the type of service required, return address, model number, and full serial number.
Page 16: Safety Precautions For The Operator
• “Fuse Replacement” on page 2-3 • “Operators Maintenance” on page 1-8 • “Lifting/Carrying the HP 37718A/19A” on page 1-6 DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have been impaired,...
Page 17: Safety Symbols
General Information Safety Precautions for the Operator Safety Symbols The following symbols on the instrument and in the manual indicate precautions which must be taken to maintain safe operation of the instrument The Instruction Documentation Symbol. The product is marked with this symbol when it is necessary for the user to refer to the instructions in the supplied documentation.
Page 18: Operators Maintenance
Clean the cabinet using a dry cloth only. Optical Connector Cleaning It is recommended that the optical connectors be cleaned at regular intervals using the following materials: Description HP Part Number Blow Brush 9300-1131 Isopropyl Alcohol 8500-5344 Lens Cleaning Paper...
Page 19: Power Supply Fuse Replacement
General Information Operators Maintenance power from the HP 37718A/19A. 2 Remove the adapters from the IN and OUT ports. 3 Using the blow brush with the brush removed blow through the ferrule of the standard ﬂexible connector and the adapter.
Page 20: Statement Of Compliance
General Information Statement of Compliance Statement of Compliance This instrument has been designed and tested in accordance with IEC Publication 1010-1 + A1:1992 Safety requirements for Electrical Equipment for Measurement, Control and Laboratory Use, and has been supplied in a safe condition. The instruction documentation contains information and warnings which must be followed by the user to ensure safe operation and to maintain the instrument in a safe condition.
Page 21: Electromagnetic Compatibility
Electrostatic Discharge When an air discharge is applied to the HP 37718A/19A in accordance with IEC 801-2 (1991), degradation in performance may be observed in the form of occasional bit errors being counted.
Page 22 Declares that the product Communications performance Analyzer Product Name Model Numbers: HP 37718A This declaration covers all options of the above products as Product Options: detailed in TCF A-5951-9852-01 Conforms with the protection requirements of European Council Directive 89/336/EEC on the approximation of the laws of the member states relating to electromagnetic compatibility.
Page 23 Declares that the product Communications Performance Analyzer Product Name Model Numbers: HP 37719A Product Options: This declaration covers all options of the above products as detailed in TCF A-5951-9852-01 Conforms with the protection requirements of European Council Directive 89/336/EEC on the approximation of the laws of the member states relating to electromagnetic compatibility.
Page 24 General Information Electromagnetic Compatibility 1-14...
Page 25: Installation
Installation Initial Inspection Installation Initial Inspection WA RN I NG TO AVOID HAZARDOUS ELECTRICAL SHOCK, DO NOT PERFORM ELECTRICAL TESTS WHEN THERE ARE SIGNS OF SHIPPING DAMAGE TO ANY PORTION OF THE OUTER ENCLOSURE (COVERS, PANELS, METERS). Inspect the shipping container for damage. If the shipping container or cushioning material is damaged, it should be kept until the contents of the shipment have been checked for completeness and the instrument has been checked both mechanically and electrically.
Page 26: Operating Environment
Installation Operating Environment Operating Environment This instrument is designed for Indoor use only. DO NOT operate the product in an explosive atmosphere or in the presence of ﬂammable gasses or fumes. This instrument may be operated in environments within the following limits: Temperature: C to +45...
Page 27: Preparation For Use
(in which all means for protection are intact). Power Requirements The HP 37718A/19A Communications Performance Analyzer requires a power source of 90 V to 132 V ac or 198 V to 264 V ac at a frequency between 47 Hz and 63 Hz (nominal).
Page 28: Connecting To The Power Supply
The cap and the fuse can then be removed and the fuse changed for another of the correct rating. The fuse rating and HP part number are listed in “Fuses” on page 2-3. Connecting to the Power Supply...
Page 29 Installation Preparation for Use Power Cord WA R N I N G TO AVOID THE POSSIBILITY OF INJURY OR DEATH, THE FOLLOWING PRECAUTIONS MUST BE FOLLOWED BEFORE THE INSTRUMENT IS SWITCHED ON:- WA R N I N G (a) Note that the protection provided by grounding the instrument cabinet may be lost if any power cable other than the three-pronged type is used to couple the ac line voltage to the instrument.
Page 30: Connecting To The Network
Installation Connecting to the Network Connecting to the Network The network connectors are located on the modules at the side of the instrument. The connections available depend on the options ﬁtted to your instrument. Before Connecting, note the Warning and Caution information given. All Connectors C AU T I O N When connecting or disconnecting, ensure that you are grounded or,...
Page 31 Installation Connecting to the Network Ω, Ω DS1 100 PDH / DS1 receiver input interface. Allows the connection of 100 Ω Ω 2Mb/s 120 balanced DS1 and 120 balanced 2 Mb/s data signals. Ω, Ω DS1 100 PDH / DS1 transmitter output interface. Provides 100 balanced DS1 Ω...
Page 32 Installation Connecting to the Network CLOCK TRIGGER Reference SDH/SONET clock trigger output 51 MHz; nominal +/- 400 mV into 50 ohms. Allows the Drop and Insert of Regenerator Section (192 kb/s) and Multiplexer Section (576 kb/s) Data Communication Channels (DCC). The following connections are available: Table 1 DCC Connector Pin-out...
Page 33: Optical Interface Connectors
Installation Connecting to the Network Optical Interface Connectors For your protection, review all laser information given in this manual before installing or using the instrument. WA R N I N G To prevent personal injury, avoid use that may be hazardous to others, and maintain the module in a safe condition Ensure the information given below is reviewed before operating the module.
Page 34 Installation Connecting to the Network C AU T I O N 1. Use of controls or adjustments or performance of procedures other than those speciﬁed herein may result in hazardous radiation exposure. 2. Always ﬁt the ﬁbre optic connector dust caps on each connector when not in use.
Page 35: Connecting Accessories
Allows connection of a telephone handset for communication across the network. Printer External printer connection details are given in the Users Guide. HP-IB, RS232, The port selected for external printer use is not available for remote PARALLEL ONLY control. Remote Control Remote control connection is given in the Remote Control Manual.
Page 36: Hewlett-Packard Interface Bus
The total HP-IB cable length used must be less than or equal to 20 meters (65.6 feet). The total HP-IB cable length used must be less than or equal to 2 meters (6 feet) × the total number of devices connected to the bus.
Page 37 Installation Connecting Accessories HP-IB Connections HP-IB Address Selection The HP 37718A/19A (Option 601) HP-IB address is accessed on the OTHER display under the REMOTE CONTROL function. The address can be set to any value between 0 and 30 inclusive. 2-13...
Page 38: Additional Precautions For Service Engineers
Installation Additional Precautions for Service Engineers Additional Precautions for Service Engineers Safety Precautions DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modiﬁcation to the product. Return the product to a Hewlett-Packard Sales and Service Ofﬁce for service and repair to ensure the safety features are maintained.
Page 39 Installation Additional Precautions for Service Engineers recommends that you use a controlled static workstation. • Handle the module by its front-panel. Avoid touching any components or edge connectors. When you install the module, keep one hand in contact with the protective bag as you pick up the module with your other hand.
Page 40: Front Panel Soft Recovery (Cold Start)
(the softkeys immediately below the display; key 0 is on the extreme left). 3 Power up the HP 37718A or HP 37719A while holding the softkeys pressed. 4 When the LOS LED has ﬂashed OFF and then ON again, the keys can be released.
Page 41: Performance Tests
Performance Tests Performance Tests Introduction The procedures given in this Section, test the HP 37718A/19A performance using the Speciﬁcations provided, as performance standards. Tests are intended to be performed in the recommended order for a full instrument calibration check. Tests can be run individually, however it will be assumed that any preceding test would meet speciﬁcations.
Page 42 400 MHz Bandwidth, 1 MΩ Input Termination HP 54520A opt 001 Telecom mask measurement capability. or HP 54810A opt 001 Frequency Synthesizer 75Ω Output, Sinewave to 80 MHz, HP 3335A opt 001 or Amplitude to 3 V pk-pk at 10 kHz, 1 Hz resolution HP 3325B &...
Page 43 * Note: Cable lengths quoted are typical for the half bit rate loss. Ideally, cables should be trimmed to correct length/loss by measuring with a Network Analyzer. ** Note: Spectrum Analyzer/Optical Coupler are only required for 37718A Jitter options. Self Test Loopback Cables and Accessories HP E4545A 3m ﬁbre optic cable FC/CP connectors.
Page 44: Recall Default Settings
Performance Tests Recall Default Settings The Performance Tests require the HP 37718A/19A to be set to a pre- deﬁned (default) state at the beginning of each test. 1 Using , display softkeys, set up the OTHER display as shown opposite...
Page 45: Self Test
Description Before carrying out the performance tests run Self Test to ascertain the integrity of the HP 37718A/19A. These tests take at least 1 hour to complete depending on the options ﬁtted. Alternatively you can run Conﬁdence Tests which only takes 2 to 3 minutes to complete. This is not a full veriﬁcation but performs BER measurements with internal and...
Page 46 If the Optical Interface is a Dual Wavelength Option the 1550 nm IN and OUT ports are not connected at this stage and can be tested later. If any or all of these connections are not made the HP 37718A/19A will FAIL Self Test.
Page 47 The information pertaining to TEST TYPE, TEST NUMBER and SUBTEST NUMBER will change as the Self Test progresses. If the HP 37718A/19A is functioning correctly, after a time of at least 1 hour, TEST STATUS PASSED is displayed. If TEST STATUS [FAIL nnn] is displayed, check the displayed error information and check loopback connections are correct.
Page 48 Performance Tests Self Test 1550 nm Dual Wavelength Tests: If a Dual Wavelength Optical Interface is ﬁtted, repeat the CONFIDENCE test with 1550 nm selected. 1 Select 1550 nm OPTICS wavelength 2 Connect 1550 nm OUT to IN via 15dB Optical Attenuator. Ensure the attenuator is inserted in the OUT port.
Page 49 Performance Tests Self Test DCC Port Tests: 1 Select BER TESTS 2 Make the following connections at the Multirate Analyzer DCC port. 3 Run the BER TESTS.
Page 50: Pdh/Dsn Internal Transmitter Clock Accuracy & Offset
44.736 MHz 4.5 ppm N OTE The Rates available are dependent on the HP 37718A/19A option. Description This test veriﬁes that the PDH transmit data rates are within limits. These limits assume the instrument is within the calibration cycle. The Frequency Offset capability (deviation from Standard Bit Rate) is also checked.
Page 51: E1 (2.048Mb/S) Frequency Accuracy
PDH/DSn Internal Transmitter Clock Accuracy & Offset Procedure 1 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on Page 3- 2 Connect the 75Ω OUT port of the PDH/DSn module to the Frequency Counter. Terminate the Frequency Counter input in 75Ω (use the T connector).
Page 52: E2 (8.448Mb/S) Frequency Accuracy
Performance Tests PDH/DSn Internal Transmitter Clock Accuracy & Offset 7 Select FREQUENCY OFFSET [-50PPM]. 8 Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable reading and ensure that the frequency counter reading is between 1023944Hz and 1023953Hz. E2 (8.448Mb/s) Frequency Accuracy 9 Select SIGNAL [8Mb/s];...
Page 53: E4 (139.264Mb/S) Frequency Accuracy
Performance Tests PDH/DSn Internal Transmitter Clock Accuracy & Offset 21 Select FREQUENCY OFFSET [USER OFFSET] [+100PPM] 22 Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable reading and ensure that the frequency counter reading is between 17185641Hz and 17185796Hz. 23 Select FREQUENCY OFFSET [USER OFFSET] [-100PPM] 24 Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable reading and ensure that the frequency counter reading is...
Page 54: Ds3 (44.736Mb/S) Frequency Accuracy
Performance Tests PDH/DSn Internal Transmitter Clock Accuracy & Offset between 1544042Hz and 1544056Hz. 36 Select FREQUENCY OFFSET [-32PPM] 37 Adjust the Frequency Counter ATTEN and Trigger Level to obtain a stable reading and ensure that the frequency counter reading is between 1543944Hz and 1543958Hz.
Page 55: Pdh/Dsn Transmitter Output
As per ITU rec G703 0.5V 10% N OT E The Rates available are dependent on the HP 37718A/19A option Description This test ensures the transmitter output level and pulse shape meet the required speciﬁcations at all PDH/DSn rates. The Transmitter output is connected to an Oscilloscope and the waveshape compared with the predeﬁned masks stored in the Oscilloscope memory.
Page 56: Equipment Required
2 Press SHIFT (Blue Key) DISK 3 Press softkey then softkey DIRECTORY ROOT DIRECTORY 139.264 Mb/s - All 1’s Pulse 1 Recall the HP 37718A Default Settings as shown on page 3-4. 2 Set the display as shown below. TRANSMIT 3-16...
Page 57 Performance Tests PDH/DSn Transmitter Output 3 Connect the PDH/DSn 75Ω OUT port to the Oscilloscope CHAN 1, terminate in 75Ω. Select CHAN 1 on the Oscilloscope and set to 1MΩ input impedance. Load the Telecom Mask 5 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask: a/ SHIFT (Blue Key) APPLICATION.
Page 58 Performance Tests PDH/DSn Transmitter Output Load the Telecom Mask 10 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask: a/ SHIFT (Blue Key) APPLICATION. softkey. TELECOM MASK/MASK c/ Use ENTRY/MEASURE control to select 139BIN0 in the highlighted MSK FILES window.
Page 59: Procedure - 34.368 Mb/S
Performance Tests PDH/DSn Transmitter Output Procedure - 34.368 Mb/s Positive Pulse 1 Recall the HP 37718A/19A Default Settings as shown on page 3-4. 2 Set the display as shown opposite. TRANSMIT 3 Connect the PDH/DSn 75Ω OUT port to the Oscilloscope CHAN 1, terminate in 75Ω.
Page 60 Performance Tests PDH/DSn Transmitter Output b/ DEFINE MEAS softkey COMPARE softkey TEST ON softkey M1M2 softkey AFTER FAIL CONTINUE g/ RUN 7 The Oscilloscope will automatically display and compare an isolated positive pulse with the mask limits. A PASS message should appear on the Oscilloscope.
Page 61: Procedure - 8.448 Mb/S
13 Measure the peak pulse amplitude at the mid pulse-width using the Oscilloscope and verify that this is between 900 mV and 1.100 Volts. Procedure - 8.448 Mb/s Positive Pulse 1 Recall the HP 37718A/19A Default Settings as shown on page 3-4. 2 Set the display as shown opposite. TRANSMIT 3 Connect the PDH/DSn 75Ω...
Page 62 Performance Tests PDH/DSn Transmitter Output Load the Telecom Mask 5 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask: a/ SHIFT (Blue Key) APPLICATION. softkey. TELECOM MASK/MASK c/ Use ENTRY/MEASURE control to select 8MG703 in the highlighted MSK FILES window.
Page 63: Procedure - 2.048 Mb/S
13 Measure the peak pulse amplitude at the mid pulse-width using the Oscilloscope and verify that this is between 2.133V and 2.607 Volts. Procedure - 2.048 Mb/s Positive Pulse 1 Recall the HP 37718A/19A Default Settings as shown on page 3-4. 3-23...
Page 64 Performance Tests PDH/DSn Transmitter Output 2 Set the display as shown below. TRANSMIT 3 Connect the PDH/DSn 75Ω OUT port to the Oscilloscope CHAN 1, terminate in 75Ω. Select CHAN 1 on the Oscilloscope and set to 1MΩ input impedance. Load the Telecom Mask 5 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask:...
Page 65 Performance Tests PDH/DSn Transmitter Output 7 The Oscilloscope will automatically display and compare an isolated positive pulse with the mask limits. A PASS message should appear on the Oscilloscope. N OT E It may be necessary to visibly ﬁt the waveform to the mask by adjusting the Oscilloscope vertical position and horizontal delay to obtain a PASS on the Mask.
Page 66: Procedure - Dsx-3
13 Measure the peak pulse amplitude at the mid pulse-width using the Oscilloscope and verify that this is between 2.133V and 2.607 Volts. Procedure - DSX-3 Positive Pulse 1 Recall the HP 37718A/19A Default Settings as shown on page 3-4. 2 Set the display as shown below. TRANSMIT 3 Connect the PDH/DSn 75Ω...
Page 67 Performance Tests PDH/DSn Transmitter Output softkey. TELECOM MASK/MASK c/ Use ENTRY/MEASURE control to select DS3_92 in the highlighted MSK FILES window. softkey. LOAD SETUP 8 M1M2 Compare Pulse with Mask 6 On the Oscilloscope, use the following key sequence to compare the pulse with the mask: a/ RECALL 8 b/ DEFINE MEAS...
Page 68: Procedure - Dsx-1
Procedure - DSX-1 Positive Pulse 1 Recall the HP 37718A/19A Default Settings as shown on page 3-4. 2 Connect the DSn 100Ω OUT port to the Oscilloscope via the HP 15508B Balanced to unbalanced Converter and terminate in 75Ω at the Oscilloscope input.
Page 69 Performance Tests PDH/DSn Transmitter Output 4 Set the display as shown below. TRANSMIT 5 Select CHAN 1 on the Oscilloscope and set to 1MΩ input impedance. Load the Telecom Mask 6 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask: a/ SHIFT (Blue Key) APPLICATION.
Page 70 Performance Tests PDH/DSn Transmitter Output N OTE Using the balanced to unbalanced converter reduces the pulse amplitude by a factor of 1.266. This will cause the comparison with the mask to fail. To overcome this select CHAN 1 ON and reduce the Volts/Division setting (highlighted on the softkey display).
Page 71 Performance Tests PDH/DSn Transmitter Output softkey COMPARE softkey TEST ON softkey M1M2 softkey AFTER FAIL CONTINUE g/ RUN N OT E Using the balanced to unbalanced converter reduces the pulse amplitude by a factor of 1.266. This will cause the comparison with the mask to fail. To overcome this select CHAN 1 ON and reduce the Volts/Division setting (highlighted on the softkey display).
Page 72: Pdh/Dsn Receiver Equalization
Automatic equalization for up to 900 feet of root f cable. N OTE The Rates available are dependent on the HP 37718A/19A option Description The Receiver Equalization is checked by looping the transmitter output to receiver input through a special Cable. This simulates the speciﬁed cable loss at the rate under test.
Page 73: Procedure
Performance Tests PDH/DSn Receiver Equalization Procedure 1 Recall the HP 37718A/19A Default Settings as shown on page 3-4. 2 Select TRANSMITTER and RECEIVER SETTINGS CONTROL [COUPLED] on the display. OTHER 139.264 Mb/s 3 Set the display as shown opposite TRANSMIT 4 Connect Cable Simulator E4 between the PDH/DSn 75Ω...
Page 74 Performance Tests PDH/DSn Receiver Equalization 34.368 Mb/s 8 Set the display as shown below TRANSMIT 9 Connect Cable Simulator E3 between PDH/DSn 75Ω OUT and 75Ω IN ports. 10 Press then to start the RESULTS TROUBLE SCAN RUN/STOP measurement. 11 Ensure that NO TROUBLE is displayed on the display after RESULTS 30 seconds.
Page 75 N OT E If Cable Simulator DS3 is not available, it is permissible to select DS3- 900' on the display and connect the HP 37718A/19A 75Ω OUT TRANSMIT port direct to the 75Ω IN port. This setup assumes the DS3-900' output signal is within speciﬁcation.
Page 76 Performance Tests PDH/DSn Receiver Equalization 8.448 Mb/s 18 Set the display as shown below. TRANSMIT 19 Connect Cable Simulator E2 between the PDH/DSn 75Ω OUT and 75Ω IN ports. 20 Press then to start the RESULTS TROUBLE SCAN RUN/STOP measurement. 21 Ensure that NO TROUBLE is displayed on the display after RESULTS...
Page 77 Performance Tests PDH/DSn Receiver Equalization 2.048Mb/s 23 Set the display as shown below. TRANSMIT 24 Connect Cable Simulator E1 between the PDH/DSn 75Ω OUT and 75Ω IN ports. 25 Press then to start the RESULTS TROUBLE SCAN RUN/STOP measurement. 26 Ensure that NO TROUBLE is displayed on the display after RESULTS 30 seconds.
Page 78 DS1 (1.544 Mb/s) 28 Set the display as shown below. TRANSMIT 29 Connect Cable Simulator DS1 between the 110Ω OUT and 110Ω IN ports via two Balanced to Unbalanced Converters (HP 15508B). 30 Press then to start the RESULTS TROUBLE SCAN RUN/STOP measurement.
Page 79: Pdh/Dsn Receiver Monitor Levels
The Rates available are dependent on the HP 37718A/19A option Description The signal from the HP 37718A/19A PDH Transmitter is applied to the PDH Receiver after attenuating by an amount equal to the selected Receiver Flat Loss plus the speciﬁed Cable Loss. The Flat Loss is obtained from a 75Ω, attenuator kit.
Page 80 Performance Tests PDH/DSn Receiver Monitor Levels Procedure 1 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on page 3- 2 Connect the equipment as shown in Figure 3-1. Figure 3-1 Receiver Monitor Input Test Setup 2.048 Mb/s (E1) 1 Press...
Page 81 Performance Tests PDH/DSn Receiver Monitor Levels below. 3 Press RESULTS TROUBLE SCAN Press to start the measurement. RUN/STOP 5 Ensure that NO TROUBLE is displayed on the display after RESULTS 30 seconds. 6 Press to stop the measurement. RUN/STOP 7 Press and select EQUALIZATION [ON] GAIN [20 dB].
Page 82 30 seconds. Press to stop the measurement. RUN/STOP 8.448 Mb/s (E2) 27 Repeat steps 1 to 26 (20dB, 26dB and 30dB tests) with the HP 37718A/ displays set to SIGNAL [8 Mb/s] and TRANSMIT RECEIVE Cable Simulator E2-M ﬁtted in place of Cable Simulator E1-M.
Page 83 Performance Tests PDH/DSn Receiver Monitor Levels 1.544 Mb/s (DS-1) 30 Repeat steps 1 to 26 (20dB, 26dB and 30dB tests) with the HP 37718A/ displays set to SIGNAL [DSX-1]. RECEIVE TRANSMIT Connect Cable Simulator DS1 between two Balanced to Unbalanced converters and ﬁt in place of Cable Simulator E1-M.
Page 84: External Mux/Demux
37718A/19A transmitter and receiver are looped. The unframed 2Mb/s/ DS-1 signal is Demultiplexed from the 34Mb/s/DS-3 data stream to the PDH/DSn Test Set via the HP 37718A/19A DROP port. A BER test is performed to verify the integrity of the 2 Mb/s/DS-1 signal.
Page 85 Performance Tests External Mux/Demux N OT E The Test Set used in this procedure is an 37718A/37719A. Any other PDH Test Set, capable of generating and measuring at 2 Mb/s/DS-1 unframed, can be used. Procedure 2Mb/s Mux/Demux 1 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on page 3- 2 Connect the equipment as shown in Figure 2.
Page 86 Performance Tests External Mux/Demux 3 Press on the Test Set and set up the display as shown TRANSMIT below. 4 Press on the Test Set and set up the display as shown below. RECEIVE 3-46...
Page 87 Performance Tests External Mux/Demux 5 Press on the HP 37718A/19A and set up the TRANSMIT display as shown below. MAIN SETTINGS 6 Press on the HP 37718A/19A and set up the TRANSMIT display as shown below. STRUCTURED SETTINGS 3-47...
Page 88 Performance Tests External Mux/Demux 7 Press on the HP 37718A/19A and set up the RECEIVE display as shown below. MAIN SETTINGS 8 Press on the HP 37718A/19A and set up the STRUCTURED RECEIVE display as shown below. SETTINGS 9 Press on the Test Set.
Page 89 Performance Tests External Mux/Demux 2.048 Mb/s Positive Pulse 11 Disconnect the UUT 75Ω DROP port from the Test Set and connect to the Oscilloscope. Terminate in 75Ω at the Oscilloscope input. 12 Select CHAN 1 on the Oscilloscope and set to 1MΩ input impedance. Load the Telecom Mask 13 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask:...
Page 90 Performance Tests External Mux/Demux softkey DIRECTORY c/ Use ENTRY/MEASURE control to highlight INV_MASK softkey CHANGE DIRECTORY Load the Telecom Mask 18 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask: a/ SHIFT (Blue Key) APPLICATION. softkey.
Page 91 DS-1 Positive Pulse 2 Disconnect the UUT 100Ω DROP port from the Test Set and connect to the Oscilloscope via the HP 15508B Balanced to unbalanced Converter. Terminate in 75Ω at the Oscilloscope input. 3 Select CHAN 1 on the Oscilloscope and set to 1MΩ input impedance.
Page 92 Performance Tests External Mux/Demux 7 Measure the peak pulse amplitude at the mid pulse-width using the Oscilloscope and verify that this is between 1.896V and 2.844V. DS-1 Negative Pulse 8 On the Oscilloscope, use the following key sequence to access the inverted mask.
Page 93 Performance Tests External Mux/Demux N OT E It may be necessary to visibly ﬁt the waveform to the mask by adjusting the Oscilloscope vertical position and horizontal delay to obtain a PASS on the Mask. 12 Measure the peak pulse amplitude at the mid pulse-width using the Oscilloscope and verify that this is between 1.896V and 2.844V.
Page 94: Pdh/Dsn Frequency Measurement And Looped Clock
A Synthesizer is used to generate a sinewave at half the data rate. This is applied to the HP 37718A/19A Receiver Signal In port. As this signal corresponds to an All Ones Ternary Signal, the HP 37718A/19A receiver should sync up with no errors if set to PATTERN [ALL ONES].
Page 95 Performance Tests PDH/DSn Frequency Measurement and Looped Clock Figure 3-3 Receiver Frequency Measurement Test Setup 3 Set the Synthesizer to: FREQUENCY - 1024.000 KHz sinewave AMPLITUDE - +10dBm. 4 Set the frequency counter to RATIO A/B. 5 Press and set up the display as shown below. RECEIVE 3-55...
Page 96 Performance Tests PDH/DSn Frequency Measurement and Looped Clock 6 Press and set up the display as shown below. TRANSMIT 7 Press and set up the display as shown below. RESULTS 8 Verify that the FREQUENCY displayed is between 2047991 Hz and 2048009 Hz.
Page 97 13 Verify that the Offset displayed is between -95.5 ppm and -104.5 ppm. The frequency counter should read 1.00. 14 Set the synthesizer level to +10 dBm, synthesizer frequency and the HP 37718A/19A to the settings given in Table 3-1 and verify the displayed Offset at each point. Table 3-1...
Page 98: Sdh/Sonet Transmitter Clock Accuracy
Frequency Counter : HP 5335A Option 010 Procedure 1 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on page 3- 2 Set the Transmitter Output to SDH/SONET. 3 Connect the HP 37718A/19A Multirate Analyzer module CLOCK TRIGGER port to the Frequency Counter Input A, set the input Ω...
Page 99: External Clock/Data Reference Inputs & Clock Reference Output
Section 1.2.2 STM-1/STS-3 Receive Recovers clock from received STM/STS input signal. N OT E The Rates available are dependent on the HP 37718A/19A option Description This test veriﬁes that signal integrity is maintained when an EXTERNAL clock is used as a reference.
Page 100 MTS Clock - Clock Format 1 Connect the 52/155 Mb/s DATA OUT port to the 52/155 Mb/s DATA IN port. 2 Recall the HP 37718A/19A Default Settings as shown on page 3-4 and set the display as shown below. OTHER...
Page 101 Performance Tests External Clock/Data Reference Inputs & Clock Reference Output 5 Connect the HP 3335A to the HP 37718A/19A 75Ω 2M REF IN port on the Clock module. 6 Press TROUBLE SCAN RESULTS 7 Press , check that the display reads NO TROUBLE and all RUN/STOP the Alarm leds are off.
Page 102 DATA IN port 24 Select CLOCK SYNC [STM-1/STS-3 RECEIVE] ON THE HP 37718A/ display. TRANSMIT 25 The SDH Clock Loss Alarm led should be lit on the HP 37718A/19A. 26 Set the Synthesizer frequency to 77.760MHz and amplitude to +10dBm. Ω...
Page 103 34 Select CLOCK SYNC [BITS] ON THE HP 37718A/19A TRANSMIT display. 35 The SDH/SONET Clock Loss Alarm led should be lit on the HP 37718A/19A. 36 Set the Synthesizer frequency to 772kHz and amplitude to +10dBm. 37 Connect the Synthesizer, via the Balanced to Unbalanced converter, to Ω...
Page 104: Sdh/Sonet Frequency Offsets
: HP 5335A Opt 010 T Connector : HP 1250-0781 Procedure 1 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on page 3- 4. Set the Transmitter Output to SDH/SONET. 2 Select CLOCK SYNC [10MHz REF] ON THE HP 37718A/19A display.
Page 105 10 The reading should be between 51.839999 - 51.840001MHz. If not check setup and ensure the Counter is locked to the Signal Generator. 11 Set the HP 37718A/19A frequency offset to the settings given in Table 3-2 and verify the frequency at each step is within the Min/Max limits.
Page 106: Stm-0/Sts-1 Transmitter Output Waveshape
: HP 54520A Option 001 Ω : HP 15522-80010 Termination T Connector : HP 1250-0781 Procedure Positive Pulse 1 Recall HP 37718A/19A DEFAULT SETTINGS as shown on page 3-4 and set up the display as shown on the following page. TRANSMIT 3-66...
Page 107 Performance Tests STM-0/STS-1 Transmitter Output Waveshape 2 Connect the 52/155 Mb/s 75Ω DATA OUT port to the Oscilloscope CHAN 1, terminate in 75Ω. Select CHAN 1 on the Oscilloscope and set to 1MΩ input impedance. Load the Telecom Mask 4 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask: a/ SHIFT (Blue Key) APPLICATION.
Page 108 Performance Tests STM-0/STS-1 Transmitter Output Waveshape N OTE It may be necessary to select softkey and MASK MASK AUTO or to visibly ﬁt the waveform to the mask by adjusting the MASK ALIGN Oscilloscope vertical gain/position and horizontal delay to obtain a PASS on the Mask.
Page 109 Performance Tests STM-0/STS-1 Transmitter Output Waveshape N OT E It may be necessary to select MASK MASK AUTO MASK ALIGN visibly ﬁt the waveform to the mask by adjusting the Oscilloscope vertical gain/position and horizontal delay to obtain a PASS on the Mask. 12 Measure the peak pulse amplitude at the mid pulse-width using the Oscilloscope and verify that this is nominally 530 mV.
Page 110: Stm-1/Sts-3 Transmitter Output Waveshape
Amplitude 0.5V Description An Oscilloscope is connected to the HP 37718A/19A Transmitter STM-1/ STS-3 output and used to view the waveforms with All Ones and All Zeros patterns selected in turn. The displayed waveshape is checked against the relevant mask. The STM/STS Framing is disabled during this test.
Page 111 Performance Tests STM-1/STS-3 Transmitter Output Waveshape All Ones Pulse 1 Connect up the equipment as shown in Figure 3-4 and Recall HP 37718A/19A DEFAULT SETTINGS as shown on page 3-4. Figure 3-4 STM-1/STS-3 Transmitter Output Waveshape Test Setup 2 Press and set up the display as shown below.
Page 112 Performance Tests STM-1/STS-3 Transmitter Output Waveshape 3 Press and enter the calibration password - OTHER CALIBRATION 1243. Set up the display as shown opposite. Connect the 52/155 Mb/s 75Ω DATA OUT port to the Oscilloscope, terminate in 75Ω. Select CHAN on the Oscilloscope and set to 1MΩ input impedance. Load the Telecom Mask 6 On the Oscilloscope, use the following key sequence to select and load the required Telecom Mask:...
Page 113 Performance Tests STM-1/STS-3 Transmitter Output Waveshape 8 The Oscilloscope will automatically display and compare an isolated positive pulse with the mask limits. A PASS message should appear on the Oscilloscope. N OT E It may be necessary to visibly ﬁt the waveform to the mask by adjusting the Oscilloscope vertical position and horizontal delay to obtain a PASS on the Mask.
Page 114 Performance Tests STM-1/STS-3 Transmitter Output Waveshape N OTE It may be necessary to visibly ﬁt the waveform to the mask by adjusting the Oscilloscope vertical position and horizontal delay to obtain a PASS on the Mask. 14 Measure the peak pulse amplitude at the mid pulse-width using the Oscilloscope and verify that this is between 450 mV and 550 mV.
Page 115: Sdh/Sonet Receiver Equalization
Equipment Required Cable Simulator STM-0/STS-1 50 metres of 8120-0049 Cable Simulator STM-1/STS-3 75 metres of 8120-0049 Procedure STM-0/STS-1 1 Recall the HP 37718A/19A Default Settings as shown on page 3-4 and set the display as shown on the OTHER SETTINGS CONTROL following page.
Page 116 Performance Tests SDH/SONET Receiver Equalization 2 Set the display as shown below. TRANSMIT 3 Connect Cable Simulator STS-1 between the 52/155 Mb/s 75Ω DATA OUT and 52/155 Mb/s 75Ω DATA IN ports. 4 Press then to start the TROUBLE SCAN RESULTS RUN/STOP measurement.
Page 117: Procedure
Performance Tests SDH/SONET Receiver Equalization Procedure STM-1/STS-3 Set the display as shown below. TRANSMIT 8 Connect Cable Simulator STS-3 between the 52/155 Mb/s 75Ω DATA OUT and 52/155 Mb/s 75Ω DATA IN ports. 9 Press then to start the RESULTS TROUBLE SCAN RUN/STOP measurement.
Page 118: Sdh/Sonet Receiver Monitor Levels
Cable Simulator STM-0/STS-1 50 metres of 8120-0049 Cable Simulator STM-1/STS-3 75 metres of 8120-0049 75Ω Attenuator Kit HP 86213A Procedure 1 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on page 3- 2 Connect the equipment as shown in Figure 3-5. 3-78...
Page 119 Performance Tests SDH/SONET Receiver Monitor Levels Figure 3-5 Receiver Monitor Input Test Setup STM-0/STS-1 1 Set the display as shown below. OTHER SETTINGS CONTROL 2 Press and set up the display as shown MAIN RECEIVE SETTINGS on next page. 3-79...
Page 120 Performance Tests SDH/SONET Receiver Monitor Levels 3 Press RESULTS TROUBLE SCAN Press to start the measurement. RUN/STOP 5 After 30 seconds ensure that NO TROUBLE is displayed on the display RESULTS 6 Press to stop the measurement. RUN/STOP 7 Connect Cable Simulator STS-1 between the52/155 Mb/s DATA OUT Port and the attenuator.
Page 121 Performance Tests SDH/SONET Receiver Monitor Levels 16 Remove Cable Simulator STS-1 from the signal path. 17 Press then to start the TROUBLE SCAN RESULTS RUN/STOP measurement. 18 Ensure that NO TROUBLE is displayed on the display after RESULTS 30 seconds. 19 Press to stop the measurement.
Page 122: Multirate Optical Interfaces
Class 1, FDA 21 CFR Ch.1 1040.10 and EN 60825 Data Rates 51.84, 155.52, 622.08 or 2488.32 Mb/s (Nominal) N OTE The Transmitter Wavelengths installed are dependent on HP 37718A/ 37719A option. Speciﬁcation (Receiver) Wavelength 1200 nm to 1600 nm Maximum Input Power -8 dBm (for BER of 1.0E...
Page 123: Description
The receiver sensitivity is veriﬁed by attenuating the transmitter output and checking for no errors in back-to-back mode. The Protected Monitor Point (PMP) functionality is veriﬁed by looping the HP 37718A/19A Optical Output to the PMP input via an Optical Attenuator and Lightwave Converter, then checking for error-free operation.
Page 124 Performance Tests Multirate Optical Interfaces Procedure 1310nm - Optical Power Output 1 Switch on the HP 37718A/19A and recall the DEFAULT SETTINGS as shown on page 3-4. 2 Connect the HP 37718A/19A Optical Out Port to the HP8153A (ensure that all connections are tight and that the cable has no twists).
Page 125 Multirate Optical Interfaces Optical Receiver Sensitivity 13 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on page 3- 14 Set the Optical Attenuator to ATTEN 15 dB, WAVELENGTH 1310 nm ; CAL=0 ; ENB ON. Connect the Optical Attenuator between the Power Meter and the HP 37718A/19A Optical Out port (ensure that all connections are tight and that the cable has no twists).
Page 126 35 After 5 minutes, check that NO TROUBLE is displayed on the display. Press to stop the measurement. RESULTS RUN/STOP 36 Recall the HP 37718A/19A DEFAULT SETTINGS as shown on page 3-4. 37 Repeat steps 28 to 36 but with [STM-1 OPT] or [OC-3] selected on the HP 37718A/19A displays.
Page 127 Performance Tests Multirate Optical Interfaces 39 Repeat steps 28 to 36 but with [STM-4 OPT] or [OC-12] selected on the HP 37718A/19A displays. TRANSMIT RECEIVE Procedure 1550 nm - Optical Power Output 40 Repeat steps 1 through 12 substituting 1550nm for 1310nm.
Page 128 Performance Tests Multirate Optical Interfaces 3-88...
Page 129: Pdh Transmit/Receive Jitter Amplitude Accuracy
Description The HP 37718A Transmitter Unbalanced PDH Output is looped to the PDH Input and the signal is also monitored on the Spectrum Analyzer. The HP 37718A Jitter modulation frequency is set to a Jitter Amplitude/Frequency check point for the selected Bit Rate and the Spectrum Analyzer set to observe the displayed spectrum centered at this bit rate.
Page 130: Procedure
Procedure 1 Connect up the equipment as shown in Figure 3-6. Figure 3-6 PDH Tx/Rx Jitter Test Setup 2 Recall the HP 37718A DEFAULT SETTINGS as shown on page 3-4. Setup the HP 37718A display as shown opposite. OTHER 3-90...
Page 131 Performance Tests PDH Transmit/Receive Jitter Amplitude Accuracy Transmit/Receive Jitter Amplitude Accuracy, Ranges (1/1.6 UIp-p) Setup the HP 37718A display as shown TRANSMIT opposite. Select TRANSMITTER OUTPUT SETTINGS [JITTER] and setup the display as shown opposite. Select RECEIVER INPUT SETTINGS [JITTER] and setup as shown below.
Page 132 Performance Tests PDH Transmit/Receive Jitter Amplitude Accuracy 7 Select and set for PDH Jitter, Short Term. Set to Multiple Window to RESULTS allow observation of TX/RX Jitter and Results pages. 8 Check the Receiver AIS Led is on. 9 Set the Spectrum Analyzer as follows: Centre Frequency - 2048 kHz (set to bit rate being checked) Frequency Span - 25 kHz (approx 10 times the jitter modulation frequency) Reference Level - 0 dBm...
Page 133: Tx/Rx Jitter Accuracy Test Setup, Ranges (1/1.6 Uip-P)
PDH Transmit/Receive Jitter Amplitude Accuracy TX/RX Jitter Accuracy Test Setup, Ranges (1/1.6 UIp-p) 10 Adjust the HP 37718A jitter amplitude until the ﬁrst Bessel Null is observed on the Spectrum Analyzer i.e ﬁrst dip in the carrier level (see Figure 3-7).
Page 134 The Bit Rates available are dependent on the HP 37718A option. 13 Press STOP to stop measurement. 14 Check the Jitter accuracy for each value in Table 3-4. In each case, set the HP 37718A Rate and Spectrum Analyzer Center Frequency to the value given in column 1 of the table (Set the HP 37718A PATTERN to ALL ONES and JITTER AMPLITUDE to minimum after each change of Bit Rate).
Page 135 Performance Tests PDH Transmit/Receive Jitter Amplitude Accuracy Transmit/Receive Jitter Amplitude Accuracy, Ranges (10/16 UIp-p) 15 Setup the HP 37718A display as shown TRANSMIT opposite. 16 Select JITTER TRANSMIT and setup the display as shown opposite. 17 Select RECEIVER INPUT SETTINGS [JITTER] and setup the display as shown opposite.
Page 136 Video Bandwidth - 1 kHz Resolution Bandwidth - 100Hz 21 Adjust the HP 37718A jitter amplitude until the second Bessel Null is observed on the Spectrum Analyzer i.e second dip in the carrier level. 22 Ensure the Jitter amplitude displayed on the HP 37718A TX display is between the minimum and maximum limits given in Table 3-5.
Page 137 Check the Received Jitter Accuracy is within the limits in Table 3-5. 24 Return the TX MODULATION SOURCE to INTERNAL. 25 Check the Jitter accuracy for each value in Table 3-5. In each case, set the HP 37718A Rate and Spectrum Analyzer Center Frequency to the value given in column 1 of the table (Set the HP 37718A PATTERN to ALL ONES and the JITTER AMPLITUDE to minimum after each change of Bit Rate).
Page 138: External Jitter Generation And Demod Output
Performance Tests PDH Transmit/Receive Jitter Amplitude Accuracy N OTE The Bit Rates available are dependent on the HP 37718A option. External Jitter Generation and Demod Output 1 Add the Synthesizer and oscilloscope to the set-up as shown below. Figure 3-8...
Page 139 Performance Tests PDH Transmit/Receive Jitter Amplitude Accuracy 3 Select TRANSMITTER OUTPUT SETTINGS [JITTER] and setup the display as shown opposite. 4 Select RECEIVER INPUT SETTINGS [JITTER] and setup as shown below: 5 Set the Spectrum Analyzer as follows: Centre Frequency - 2048 kHz (set to bit rate being checked) Frequency Span - 25 kHz (approx 10 times the jitter modulation frequency) Reference Level - 0 dBm Sweep Time - Auto...
Page 140 PDH Transmit/Receive Jitter Amplitude Accuracy 8 Check that the Synthesizer amplitude waveform on the Oscilloscope is between 1.76V pk_pk and 2.84V pk_pk. 9 Check that the HP 37718A Demod Output amplitude waveform on the Oscilloscope is between 707 and 833mV pk_pk. 3-100...
Page 141: Sdh Transmit/Receive Jitter Amplitude Accuracy
The test is repeated for various Jitter Amplitude/Frequency points to check the TX and RX ranges. The Optical SDH rates are tested in a similar way. In this case the HP 37718A Optical Transmit signal is split using an optical coupler. Part is looped back via an Optical Attenuator to the HP 37718A Receiver.
Page 142: Equipment Required
: HP 10240B * Note the 15dB optical attenuator accessory E4546A (supplied with your instrument) is NOT suitable for this purpose. 1 Recall the HP 37718A DEFAULT SETTINGS as shown on page 3-4. Setup the HP 37718A OTHER display as shown opposite.
Page 143: Procedure
STM-1e Electrical Transmit/Receive SDH Jitter Amplitude Accuracy 3 Connect up the equipment as shown in Figure 3-9. Figure 3-9 STM-1e Electrical Transmit/Receive Test Setup Select and setup TRANSMIT the HP 37718A display as shown opposite. Setup for STM-1 E CMI with bulk loading. 3-103...
Page 144 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy Select JITTER TRANSMIT and ensure Jitter is set to OFF. 6 Select RECEIVER INPUT SETTINGS [JITTER] and setup as shown below. 3-104...
Page 145 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy 7 Select and set for SDH Jitter, Short Term. ( Ensure the Timing RESULTS Control is set for I Sec Manual) Set to Multiple Window to allow observation of TX/RX Jitter and Results pages. 8 Press RUN.
Page 146 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy N OTE The receiver will show SDH errors, (LOF/OOF, PATTERN LOSS, AU-LOP), when pattern is set to ALT as there is no Framing etc. This calibration test pattern allows spectral monitoring of the jittered signal 11 Select JITTER TRANSMIT...
Page 147 To optimize amplitude for checking the Receiver Accuracy it may be necessary to use an external modulation source to give better amplitude resolution. Set the HP 37718A to accept an External modulation source and set the synthesizer to the same jitter frequency as used for Internal modulation. Adjust the level from minimium until the Carrier/Sideband amplitude is within 0.10 dB of the required difference.
Page 148 22 Change the Jitter Frequency to 6.5 kHz and adjust the Spectrum Analyzer span to approx 3 times the Jitter frequency. 23 Adjust the HP 37718A jitter amplitude (approximately 0.91 UI) and adjust until the Carrier and ﬁrst sidebands observed on the Spectrum Analyzer are the same amplitude within 0.10 dB (see Figure 3-11).
Page 149 28 Change the Jitter Frequency to 4 kHz and adjust the Spectrum Analyzer span to approx 5 times the Jitter frequency. 29 Adjust the HP 37718A jitter amplitude (approximately 3.52 UI) until the 2nd Bessel Null is observed on the Spectrum Analyzer i.e 2nd dip in the carrier level (see Figure 3-12).
Page 150 It may be necessary to use an external modulation source to give better amplitude resolution to optimise the measurement . The HP 37718A is set to accept External modulation source and the synthesizer is set to the same jitter frequency as used for Internal modulation and the level is ﬁne adjusted to the desired frequency span.
Page 151 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy Figure 3-13 Peak Deviation Example ∆ Freq kHz Centre Freq Span Sweep 12 seconds 20.3 ±0.25 For STM-4 311.04 MHz 24 kHz 10 Hz 33 seconds 82.3 ±0.5 For STM-16 1.24416 GHz 90 kHz 10 Hz 41 Set the Calibration Pattern to OFF.
Page 152 Optical Transmit/Receive SDH Jitter Accuracy 44 Connect the equipment as shown below. Figure 3-14 Optical Transmit/Receive SDH Jitter Test Setup 45 Setup the HP 37718A display as shown below. TRANSMIT N OTE Use the available wavelength 1310/1550nm. Where both are ﬁtted select 1310nm.
Page 153 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy 46 Select and ensure Jitter is set to OFF and Calibration JITTER TRANSMIT Pattern is set to OFF. 47 Check the Optical Power measurement Results and adjust the Optical Attenuation as necessary for Received optical power within the BER & JITTER range.
Page 154 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy STM-1 Optical 48 Repeat steps 6 to 43 using the information in the Table below for STM-1 Optical Rate. STEP TX Result TX Result RX Result RX Result Range Range Filter UI p-p Freq MIN p-p MAX p-p...
Page 155 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy STM-4 Optical 49 Change Transmit/Receive Rate to STM-4 Optical with AU4-4C Mapped Bulk Filled 2^23 PRBS Payload. Check and adjust the optical power as necessary. Ensure Jitter is OFF and Calibration Pattern is OFF, then repeat steps 6 to 43 using the information in the Table below for STM-4.
Page 156 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy STM-16 Optical 50 .Change Transmit/Receive Rate to STM-16 Optical with AU4-16C Mapped Bulk Filled 2^23 PRBS Payload. Check and adjust the optical power as necessary. Ensure Jitter is OFF and Calibration Pattern is OFF, then repeat steps 6 to 43 using the information in the Table below for STM-16.
Page 157: External Jitter Generation And Demod Output
External Jitter Generation and Demod Output 1 Add the Synthesizer and oscilloscope to the set-up as shown below. Figure 15 SDH External Jitter Generation and Demod Output Test Setup 2 Setup the HP 37718A display as shown TRANSMIT opposite. 3-117...
Page 158 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy 3 Select TRANSMITTER OUTPUT SETTINGS JITTER and setup the display as shown opposite. 4 Select RECEIVER INPUT SETTINGS and setup the JITTER display as shown opposite. 5 Set the Calibration Pattern to ALT. 6 Set the Spectrum Analyzer as follows: Centre Frequency - 77.76 MHz (half bit rate being tested) Frequency Span - 30 kHz (approx 3 times the Jitter frequency)
Page 159 9 Check that the Synthesizer amplitude waveform on the Oscilloscope is between 364 and 546 mV pk_pk. 10 Check that the HP 37718A Demod Output amplitude waveform on the Oscilloscope is between 756 mV and 1.075 V pk_pk. 11 Set the Calibration Pattern to OFF and set Jitter to OFF.
Page 160 Performance Tests SDH Transmit/Receive Jitter Amplitude Accuracy 3-120...
Page 161: Performance Test Record
Performance Tests Performance Test Record Performance Test Record Hewlett-Packard Model 37718/37719A 2.5 Gb/s Multirate Communications Performance Analyzer Location: Serial No.: Tested by: Options: Temperature: Certiﬁed by: Humidity: Date: Note the test steps applicable are dependent on the instrument options and bit rates available Enter N/A if a test does not apply for your instrument Table 6 Performance Test Record...
Page 162 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual 3-12 Step 16: 34 Mb/s 17.18389227 MHz 17.1840774 MHz Step 18: 34 Mb/s +20ppm 17.184266 MHz 17.184421 MHz Step 20: 34 Mb/s -20ppm 17.183579 MHz 17.183734 MHz Step 22: 34 Mb/s +100ppm...
Page 163 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual 3-21 8.448Mb/s (E2) Step 7 +ve Pulse Pass/Fail Step 8: +ve Pulse amplitude 0.900V pk 1.100V pk Step 12: -ve Pulse Pass/Fail Step 13: -ve Pulse amplitude 0.900V pk 1.100V pk...
Page 164 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual 3-32 PDH/DSn Receiver Equalization Step 6: 139.264Mb/s (E4) Pass/Fail Step 11: 34.368Mb/s (E3) Pass/Fail Step 16: 8.448 Mb/s (E2) Pass/Fail Step 21: 2.048Mb/s (E1) Pass/Fail Step 26: 44.736Mb/s (DS3)
Page 165 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual Step 28: 20dB & Equalization Pass/Fail Step 28: 26dB & Equalization Pass/Fail Step 28: 26dB Pass/Fail 3-42 139.264Mb/s (E3) Step 29: 20dB Pass/Fail Step 29: 20dB &...
Page 166 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual Step 21: -ve Amp 2Mb/s 2.133 V pk 2.607 V pk Step 1: DS-1 Bit & Code EC Pass/Fail Step 1: DS-1 Bit Error Add Pass/Fail Step 6: +ve Pulse Mask DS-1...
Page 167 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual Step 14: 1.544Mb/s 0 ppm -4.5 ppm +4.5 ppm Step 14: 1.544Mb/s -100 ppm -95.5 ppm -104.5 ppm Step 14: 1.544Mb/s +100 ppm +95.5 ppm +104.5 ppm Step 14: 44.736Mb/s 0 ppm...
Page 168 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual Step 11: -100ppm 51.8348149MHz 51.8348171MHz Step 11: -66ppm 51.8365464MHz 51.8365485MHz Step 11: +33ppm 51.8417252MHz 51.8417273MHz Step 11: +100ppm 51.8451829MHz 51.8451851MHz Step 11: +999ppm 51.8917871MHz 51.8917892MHz 3-66 STM-0/STS-1 Transmitter...
Page 169 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual Step 9: 20dB + Equalization Pass/Fail Step 14: 26dB + Equalization Pass/Fail Step 18: 26dB Pass/Fail STM-1/STS-3 Step 20: 20dB Pass/Fail Step 20: 20dB + Equalization Pass/Fail Step 20: 26dB + Equalization...
Page 170 Performance Tests Performance Test Record Table 6 Performance Test Record continued Page Test Description Result Actual Step 42: STM-4/OC-12 0 dBm +3 dBm Step 42: STM-16/OC-48 0 dBm +3 dBm Sensitivity 1550nm Step 43: STM-0/OC-1 Pass/Fail Step 43: STM-1/OC-3 Pass/Fail Step 43: STM-4/OC-12 Pass/Fail...
Page 171: Jitter Performance Test Record (Options 204, 205 & 206)
Performance Tests Jitter Performance Test Record (options 204, 205 & 206) Jitter Performance Test Record (options 204, 205 & 206) Hewlett-Packard Model 37718A 2.5 Gb/s Multirate Communications Performance Analyzer (Jitter options only) Location: Serial No.: Tested by: Options: Temperature: Certiﬁed by:...
Page 172 Performance Tests Jitter Performance Test Record (options 204, 205 & 206) Table 7 Performance Test Record continued Page Test Description Result Actual Step 22 2048 kHz - Null 4.8 UI Rx 4.377 UI Rx 5.143 UI 2048 kHz - Null 8.8 UI Tx 8.2 UI Tx 9.3 UI 2048 kHz - Null 8.8 UI Rx 8.097 UI Rx 9.423 UI...
Page 173 Performance Tests Jitter Performance Test Record (options 204, 205 & 206) Table 7 Performance Test Record continued Page Test Description Result Actual 3-101 SDH Tx/Rx Jitter Amplitude Accuracy STM1 Electrical Step 8 No SDH result errors Pass/Fail Step 8 <0.050 UI p-p Jitter result Step 9: Jitter result...
Page 174 Performance Tests Jitter Performance Test Record (options 204, 205 & 206) Table 7 Performance Test Record continued Page Test Description Result Actual 3-114 STM1 Optical Step 47 Optical Power dBm N/A/ Step 48 step 8 No SDH errors Pass/Fail step 8 Rx result 0.050 UI p-p step 9 Rx result 0.050 UI p-p...
Page 175 Performance Tests Jitter Performance Test Record (options 204, 205 & 206) Table 7 Performance Test Record continued Page Test Description Result Actual step 41 No SDH Pass/Fail errors 3-115 STM 4 Optical Step 49 Optical Power dBm step 8 No SDH errors Pass/Fail step 8 Rx result 0.070 UI p-p...
Page 176 Performance Tests Jitter Performance Test Record (options 204, 205 & 206) Table 7 Performance Test Record continued Page Test Description Result Actual step 39-43 Tx result 124.37 UI p-p 139.63 UI p-p Step 49 step 39-43 Rx result 113.40 UI p-p 150.60 UI p-p step 41 No SDH Pass/Fail...
Page 177 Performance Tests Jitter Performance Test Record (options 204, 205 & 206) Table 7 Performance Test Record continued Page Test Description Result Actual step 35 No SDH Pass/Fail errors step 39-43 Tx result 499.60 UI p-p 556.40 UI p-p step 39-43 Rx result 451.60 UI p-p 604.40 UI p-p step 41 No SDH...
Page 178 Performance Tests Jitter Performance Test Record (options 204, 205 & 206) 3-138...
Page 179: Terms
STS-1 SPE + H1, H2, H3 AU-4 STS-3c SPE + H1, H2, H3 BIP (Bit Interleaved parity) CV (Code Violation) High Order Path (HP / HO) STS Path I-n Intra Ofﬁce, (n=STM-n level) Intermediate Reach (IR) L-n.1 or L-n.2 long haul...
Page 180 Multiplexer Section Overhead Line Overhead Network Node Interface Line Interface SEF (severely errored frame defect) Path AIS / AU-AIS AIS-P Path REI / HP REI REI-P Path FERF / HP RDI RDI-P Path IEC / AU-IEC IEC-P Path Overhead Path Overhead...
Page 181 Installation ETSI/ANSI Conversion and Equivalent Terms Table 1 ETSI / ANSI Terminology , continued ETSI Term ANSI Term OC-n / STS-n (where m= n÷ 3 for m ≥ 1 STM-m STM-0 STS-1 STM-1 OC3c / STS-3c STM-4 OC-12 / STS-12 STM-16 OC-48 / STS-48 Tributary Unit (TU)
Page 182 Installation ETSI/ANSI Conversion and Equivalent Terms...
Page 183: Self Test Overview
Self Tests This section gives a overview of the Self Tests and their function. Note - For SONET only option instruments, HP 37719A the equivalent SONET rate is used in SDH subtests. There are several Self Test selections. Some providing overall functional tests and others provide speciﬁc measurement hardware/functions tests.
Page 184: All Tests (Test Time - Up To 1 Hour Depending On Options)
Installation Self Tests All Tests (test time - up to 1 Hour depending on options) This provides an extensive Back to Back veriﬁcation test of the instrument operation. The test uses much of the speciﬁc function tests, performing the appropriate subtest depending on options ﬁtted. Test are run as follows. CPU test CONFIDENCE test PDH test...
Page 185: Pdh Test (Test Time- Approximately 20 Minutes)
Installation Self Tests PDH Test (test time- approximately 20 minutes) Provides comprehensive test of the PDH Transmit/Receive sections. Note this test is run as part of ALL TESTS. The Subtests used are dependent on PDH option. Subtest Test Function Line Code Tests (140/34/8/2 Mhz Unable 75 ohm) Line Code Tests (2MHz Balanced 120 ohm) 10-21 Frequency Offset (140/34/8/2Mhz)
Page 186: Ber Test (Test Time- Approximately 20 Minutes)
Installation Self Tests BER Test (test time- approximately 20 minutes) These tests perform extensive test of the SDH/SONET Electrical and Optical Transmit/Receive sections. Note this test is run as part of ALL TESTS with the exception of Subtest 83, DCC port test. Subtest Test Function STM-16 MUX/DEMUX Internal Loopback...
Page 187 Installation Self Tests TU-3/TU12 Mixed Payload Test TU-12/TU-3 Mixed Payload Test TU-3/TU-11 Mixed Payload Tests TU-11/TU-3 Mixed Payload Tests 74-75 AU New Pointer Test 76-77 AU Frequency Offset Pointer Moves 78-79 TU Frequency Pointer Moves 80-81 STM-16o 140Mb/s Payload VC Offset Test TU-3 Background Pattern Test DCC Port Test 84-87...
Page 188: Jitter Test (Test Time- Approximately 20 Minutes)
Self Tests JITTER Test (test time- approximately 20 minutes) These tests apply to HP 37718A option 204, 205, 206 only. Provides extensive tests of the PDH/SDH Tx/Rx Jitter sections. Note this test is run as part of ALL TESTS. Subtest...
Page 189 Installation Self Tests LOOPBACKS REQUIRED BY TEST...
Page 190 The Tests will halt if a Self Test Error is detected. A message indicating the test point being run and error detected is displayed. Check all loopback connections and re-run the test. If the problem persists and contact your local HP Service Ofﬁce or representative. Tests should only performed in a stable ambient environment where the instrument will not be disturbed during test.
Page 191: Option Structure/Module Conﬁguration
Installation Option Structure/Module Conﬁguration Option Structure/Module Conﬁguration This section gives a overview of the HP 37718/9A Multirate SDH/SONET 2.5 Gb/s Option structures and Module conﬁgurations. SDH/SONET Operation Interface Options HP 37718A Option 001 - SDH version HP 37718A Option 002 - SDH/SONET version...
Page 192 Installation 37718A/19A Multirate BER conﬁgurations - Options 104/105/106 37718A Multirate BER + JITTER conﬁgurations - Options 204/205/206...
Page 193 Internal SDH Transmitter Clock, 3-58 Recommended Test Equipment, 3-5 ESD Precautions Necessary, 2-6 REF OUT, 2-7 To the Network, 2-6 Remote Control HP-IB, RS232, 10 BASE To the Power Supply, 2-4 Jitt. Amp. PDH Tx/Rx, 89 -T Connector, 2-11 Connectors Jitt.
Page 194 Index STM-1/STM-4 Optical Interface, 3-82 Storage and Shipment, 1-4 Symbols, Safety, 1-7 TRANSMIT 2,8,34,140 OUT, 2-6 VGA Connector, 2-11 warning symbols, 2-10 Warranty, 1-1 Weight and Dimensions, 1-5...
Page 195 Hewlett-Packard Sales and Service Offices The following information was correct at the time of printing. If you have difﬁculty ontacting an HP ofﬁce, an up-to-date list of contacts is available through the HP Website at URL http://www.tmo.hp.com/tmo/index.html. Austrailia/New Zealand Seoul, 150-010...
Page 196 166 27 Praha 6 Taipei, 105 Phone Number: 420/2/2435 5808 Phone Number: 080-212-535 Fax: 420/2/2435 5809 Fax: (886-2) 2718-9860 HP DIRECT Basic Tools toll free: 0800-47866, Thailand: Denmark: Hewlett-Packard (Thailand) Ltd. Hewlett-Packard A/S 23rd-25th ﬂoor Vibulthani Tower 2 T&M Direct...
Page 197 Fax: 01 69 82 65 09 E-Mail Address: hpi_direct@hp-italy-gen3.om.hp.com Germany: Netherlands: Hewlett-Packard GmbH Hewlett-Packard Nederland B.V. HP DIRECT HP T&M DIRECT Herrenberger Str. 140 Startbaan 16 71034 Böblingen 1187 XR Amstelveen Phone Number: (0180) 524-63 33 Phone Number: 020-547 6669 Fax: (0180) 524-63 36 Fax: 020-547 7765 E-Mail Address: Messtechnik_vertrieb@hp.com...
Page 198 Japan: Fax: 34 91 631.14.69 Hewlett-Packard Japan Ltd. Sweden: Measurement Assistance Center Hewlett-Packard Sverige AB 9-1, Takakura-Cho, Hachioji-Shi HP Test & Mätsystems kundcenter Tokyo, 192-8510 Skalholtsgatan 9 Phone Number: 81-426-56-7832 S-164 97 KISTA Additional phone number(s): 0120-421-345 Sweden Fax: 81-426-56-7843...
Page 199 Hewlett-Packard Sales and Service Offices (continued) Middle East and Africa 2670 Queensview Drive Israel: Ottawa, Ontario K2B 8K1 HP DIRECT Phone Number: 1-800-276-8661 C.M.S. LTD. Fax: 1-800-746-4866 11, Hashelosha St. Tel-Aviv 67060 United States: Phone Number: 03 53 80 377...
Page 200 Hewlett-Packard Sales and Service Offices (continued) Roseville, CA 95747-7102 New Jersey Phone Number: (800) 403-0801 Hewlett-Packard Co. (4401) Fax: (888) 857-8161 150 Green Pond Road Rockaway, NJ 07866 Colorado Phone Number: (800) 403-0801 Hewlett-Packard Co. (2452) Fax: (888) 857-8161) 24 Inverness Place East Englewood, CO 80112 Texas Phone Number: (800) 403-0801...
Page 201 About This Edition This is the ﬁrst edition of the 37718-90069 manual. It documents the product as of 05/99. Edition dates are as follows: First Edition May 99. © Copyright Hewlett- Packard Ltd. 1999 All rights reserved. Reproduction, adaption, or translation without prior written permission is prohibited, except as...
Page 202 In This Book This book contains installation information and techniques for checking instrument speciﬁcations. Printed in U.K. 05/99 37718-90069...

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HP 37718A Installation And Verification Manual

1 General Information Warranty

2 Installation

3 Performance Tests

4 Terms

5 Self Test Overview

6 Option Structure/Module Conﬁguration

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