Sel -3031 Instruction Manual
  1. Manuals
  2. Brands
  3. Sel Manuals
  4. Transceiver
  5. SEL-3031
  6. Instruction manual

Sel -3031 Instruction Manual

Serial radio transceiver
Hide thumbs Also See for SEL-3031:
Table of Contents

Advertisement

Quick Links

SEL-3031
Serial Radio
Transceiver
Instruction Manual
20091009
*PM3031-01*

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SEL-3031 and is the answer not in the manual?

Questions and answers

Related Manuals for Sel SEL-3031

Summary of Contents for Sel SEL-3031

  • Page 1 SEL-3031 Serial Radio Transceiver Instruction Manual 20091009 *PM3031-01*...
  • Page 2 All brand or product names appearing in this document are the trademark or registered trademark of their respective holders. No SEL trademarks may be used without written permission. SEL products appearing in this document may be covered by US and Foreign patents.

  • Page 3: Table Of Contents

    Communications ....................2.12 Section 3: Job Done Examples Overview ........................3.1 High-Speed Teleprotection or Control With M IRRORED Communications..................3.1 Using an SEL Information Processor to Collect Relay Status and Measurements....................3.6 Section 4: Settings and Commands PC Software......................4.1 Settings ........................4.5 Commands......................4.15 Section 5: Performance Monitoring, Testing, and Troubleshooting Overview ........................5.1...
  • Page 4 Table of Contents Appendix B: SEL-3044 Encryption Card Overview........................B.1 NIST FIPS 140-2 Level 2 Security Requirements ..........B.1 Theory of Operation—SEL Protocol..............B.2 SEL-3031 Instruction Manual Date Code 20091009...

  • Page 5: List Of Tables

    Password Jumper Position ...........2.10 Table 2.6 Communications Cables for Time and Communications Connections ..............2.11 Table 2.7 Front-Panel Status Indicator LEDs........2.11 Table 2.8 SEL-3031 Port Description..........2.12 Table 2.9 SEL-3031 Port Description..........2.13 Table 4.1 QuickSet SEL-5030 Software ......4.1 ERATOR Table 4.2 Device Editor Menus .............4.9 Table 4.3...
  • Page 6 This page intentionally left blank...

  • Page 7: List Of Figures

    EIA-232 and EIA-485 DB-9 Connector Pin Numbers ....2.13 Figure 2.6 SEL Cable C245A: SEL-3031 to Computer........2.14 Figure 2.7 SEL Cable C285: SEL-3031 to DTE Device (SEL Relays) ...2.15 Figure 2.8 SEL Cable C782/C387: SEL-3031 to SEL Communications Processor..................2.15 Figure 2.9 USB Interface .................2.16...
  • Page 8 This page intentionally left blank...

  • Page 9: Preface

    Preface Manual Overview The SEL-3031 Serial Radio Transceiver manual includes the information needed to properly install and operate the product. The scope of this manual includes specifications, installation, mechanical information, self-monitoring, and alarming. An overview of each manual section and topics follows.

  • Page 10: Safety Information

    SEL about returning this panneau. Si vous n’êtes pas équipés pour device and related SEL equipment for service. travailler avec ce type de composants, contacter SEL afin de retourner l’appareil pour un service en usine.
  • Page 11 French WARNING AVERTISSEMENT Operator safety may be impaired if the device is La sécurité de l’opérateur peut être used in a manner not specified by SEL. compromise si l’appareil est utilisé d’une façon non indiquée par SEL. WARNING AVERTISSEMENT Atmospheric electrical charge accumulation L'accumulation de charges électriques de...
  • Page 12 This page intentionally left blank...

  • Page 13: Section 1: Introduction And Overview

    ITU Region 2 ISM band of 902–928 MHz using a fast frequency-hopping algorithm for noise immunity and long-distance operation. The SEL-3031 prevents the need for multiple sets of radios or expensive dedicated fiber transmitting over long distances. Figure 1.1 shows the flexibility of the SEL-3031 ITS ®...

  • Page 14: Features, Benefits, And Applications

    ➤ No Licensing Reduces Delays and Expenses. Uses the license-free, 900-MHz ISM band for on-time, on-budget projects. ➤ Mounting Options Simply Installation. Order your SEL-3031 in one of three different packages: rack-mount, wall-mount, and NEMA 3R prewired radio solution. ➤...

  • Page 15: Table 1.1 Radio Antenna And Cable Accessories

    ➢ SEL ASCII ➢ IEEE C37.118 Synchrophasors Optional Features ➤ One port EIA-485 ➤ One port fiber-optic (SEL-2812-compatible) ➤ SEL-3044 Encryption Card Accessories Table 1.1 Radio Antenna and Cable Accessories Description Part Number Feed Line RG-8 TNC to N Connector...

  • Page 16: Product Diagrams

    Introduction and Overview Product Diagrams Product Diagrams Figure 1.2 SEL-3031 Dimensions SEL-3031 Instruction Manual Date Code 20091009...

  • Page 17: Figure 1.3 Sel-3031 Rack Mount (Front And Rear)

    Introduction and Overview Product Diagrams Figure 1.3 SEL-3031 Rack Mount (Front and Rear) Date Code 20091009 SEL-3031 Instruction Manual...

  • Page 18: Figure 1.4 Sel-3031 Wall Mount (Front And Rear)

    Introduction and Overview Product Diagrams i4243c i4211b Figure 1.4 SEL-3031 Wall Mount (Front and Rear) SEL-3031 Instruction Manual Date Code 20091009...

  • Page 19: Specifications

    43.9 mm x 219.7 mm x Communications (MB8), ERATOR 162.6 mm QuickSet SEL-5030 Software Support, (1.73 in x 8.66 in x SEL ASCII and Compressed ASCII, SEL 6.40 in) Fast Messaging, IEEE C37.118 Rack Mount: 43.7 mm x 482.6 mm x Synchrophasors 160.0 mm...

  • Page 20: Power Supply

    ENV 50204-1995 Telephone RF Severity Level 10 V/m at Shock IEC 60255-21-2:1988 Immunity: 900 MHz and 1.89 GHz Resistance: Class 1 shock withstand, bump, Class 2 shock response Cold: IEC 60068-2-1:2007 –40°C, 16 hours SEL-3031 Instruction Manual Date Code 20091009...
  • Page 21 Certifications ISO: Equipment designed and manufactured using ISO 9001-certified quality program. FCC ID: R34SEL - 3031 4468A - SEL3031 Date Code 20091009 SEL-3031 Instruction Manual...
  • Page 22 This page intentionally left blank...

  • Page 23: Overview

    Installation Overview RF Exposure Notice The SEL-3031 transmitter module is approved for use only with specific RF EXPOSURE antenna, cable, and output power configurations that have been tested and approved for use. Modifications to the SEL-3031, the antenna system, or...

  • Page 24: Section 2: Installation Overview

    The formula used to calculate the widest distance of the Fresnel zone is as follows:    17.32 d where: b = radius of the Fresnel zone in meters d = distance between transmitter and receiver in kilometers f = frequency transmitted in GHz SEL-3031 Instruction Manual Date Code 20091009...

  • Page 25: Table 2.1 Fresnel Zone Diameter

    FCC and IC regulations; maximum power output from the antenna must not exceed 36 dBm. The SEL-3031 can transmit up to 1 W or 30 dBm from the antenna port. If the calculated EIRP exceeds 36 dBm then you must reduce the power...
  • Page 26 SEL-3031 with 15 meters (50 feet) of LMR 400, lightning arrestor, and the 5-Element Yagi with 11.1 dBi of gain. The radio would transmit 30 dBm, the feedline loss is 1.95 dB, lightning arrestor loss is 0.15 dB, and the antenna gain is 11.1 dBi.

  • Page 27: Figure 2.2 Antenna Polarization

    Radio Interference The SEL-3031 shares a frequency spectrum with other services and FCC Part 15 (unlicensed) devices in ITU Region 2 (North, Central, and South America). This radio should not be used in Brazil or Chile due to the regulations defining frequency allocation.

  • Page 28: Table 2.2 900-Mhz Frequency Skip Zones

    ➤ When constant interference is present in a particular frequency zone, it may be necessary to “lock out” that zone from the SEL-3031 hopping pattern. The SEL-3031 includes a SKIP setting that removes interfered frequency zones from its hopping pattern. See Table 4.5...

  • Page 29: Connections

    (12 AWG) or heavier wire less than 2 meters (6.6 feet) in length for this connection. The ground connection should be made before the power connections. Connections Rear-Panel Connections The physical layout of the SEL-3031 connections is shown in Figure 2.3. Figure 2.3 Wall-Mount and Rack-Mount Rear Connections...

  • Page 30: Power Connections

    24–48 Vdc or 125/250 Vac or Vdc. Check the serial label for power supply information. Do not apply power to the SEL-3031 without having a proper 50- load on the antenna port. If you do not have the proper 50- load connected, the radio antenna port will...

  • Page 31: Serial Ports

    EIA-485 systems. Port 2 includes the IRIG-B time-code signal input (see Table 2.6). SEL offers fiber-optic transceivers or fiber-optic port options on Port 1 (SEL-2812 compatible optic) for connecting devices at distances over 15 meters (50 feet) where copper cable is not appropriate. The SEL-2800 family of transceivers provides fiber-optic links between devices for electrical isolation and longer distances, overcoming the limitations of electrical EIA-232 interfaces.

  • Page 32: Table 2.4 Default Passwords

    Connections Password Jumper The SEL-3031 contains two levels of passwords to access and set the radio. The Level 1 password is for read access and the Level 2 password is for write access. The default passwords that are shipped with the SEL-3031 are shown in Table 2.4.

  • Page 33: Front-Panel Indicators

    IRIG-B ® IRIG-B only from DB-9 on SEL-2407 C388 a. If connecting to an SEL communications processor you must turn the 5V_EN Global setting in the SEL-3031 to OFF. Front-Panel Indicators The SEL-3031 has ten front-panel LED indicators.

  • Page 34: Communications

    2.12 Installation Communications Communications Serial Ports Table 2.8 shows the physical interfaces of the SEL-3031. Several options are provided for Port 1 physical interfaces, including EIA-232, EIA-485, and fiber. Table 2.8 SEL-3031 Port Description Port Communications Interface Location Port 1...

  • Page 35: Table 2.9 Sel-3031 Port Description

    Fiber-Optic Serial Port Order the fiber-optic option for Port 1 for safety and long-distance communications up to 4 kilometers (2.5 miles). The fiber-optic port is an SEL-2812-compatible device that can connect directly to any SEL-2812-compatible device or SEL-2812 fiber optic transceiver, using multimode fiber-optic cable with a core diameter of 50 to 200 micrometers.

  • Page 36: Figure 2.6 Sel Cable C245A: Sel-3031 To Computer

    EIA-232 EIA-485 IRIG– RX– Cleaning Use care when cleaning the SEL-3031. Perform the following steps: Step 1. Use a mild soap or detergent solution and a damp cloth to clean the chassis. Step 2. Be careful cleaning the front and rear panels because a permanent plastic sheet covers each panel.

  • Page 37: Figure 2.7 Sel Cable C285: Sel-3031 To Dte Device (Sel Relays)

    Pin # NOTE: For best results, limit the cable length to 15 meters (50 ft) CAUTION: You must turn off the +5 V on Pin 1 of the SEL-3031 when connecting to a communications processor. Figure 2.8 SEL Cable C782/C387: SEL-3031 to SEL Communications...

  • Page 38: Figure 2.9 Usb Interface

    2.16 Installation Communications bit, and no parity to properly communicate with the SEL-3031. This virtual serial port ® can now be used with QuickSet SEL-5030 Software to help set and ERATOR view settings and obtain report information. SEL-3031 Figure 2.9 USB Interface...

  • Page 39: Section 3: Job Done Examples

    Section 2: Installation Section 5: Performance Monitoring, Testing, and Troubleshooting more information. Each of the sections below describes how to set up the SEL-3031 serial port and the end devices to make a proper connection. High-Speed Teleprotection or Control With Communications...
  • Page 40 On Port 1 on each radio install a C285 cable to the IED device. As an alternative, the SEL-3031 can be ordered with a fiber-optic serial port that works with SEL-2812 transceivers. If you use the fiber-optic port on the SEL-3031 then the IED connection needs to be an SEL-2812MR Fiber-Optic Transceiver.
  • Page 41 Figure 3.3 SEL-351 Port Settings for M Connection IRRORED The SEL-3031 locks all three serial ports to 19200 bps (8, N, 1). You cannot change the port speed. If the SEL-3044 Encryption Card is used then the data rate changes to 9600 bps (8, N, 1).
  • Page 42 Set TXMODE equal to P (Paced). To connect the relay to the radio, use an SEL-C285 cable (DB-9 male-to-DB-9 male straight-through). If complete electrical isolation is desired between the radio and antenna and the relay’s EIA-232 communications port, use the SEL-2812MR Fiber- Optic Transceiver and fiber-optic cable to connect the relay to the radio.
  • Page 43 This will delay operation by one processing interval but will give you a higher level of channel security. To connect the SEL-2505 to the radio, use a 62.5 µm multimode SEL-C807 fiber cable. ® The SEL-C807 fiber cable comes with ST connectors and your choice of zipcord or waterproof heavy-duty jacketed fibers.

  • Page 44: Using An Sel Information Processor To Collect Relay Status And

    CBADA RBADA ROKA Figure 3.6 TAR ROKA Command From an SEL-351 The results shown here is from an SEL-351 Relay. ROKA is asserted, meaning that the two relays have established M communication. For longer-term channel IRRORED tests, use the COM report command available in the relay and suggestions described in Monitoring Radio Performance on page 5.1.

  • Page 45: Figure 3.8 Sel-3031 Port 1 Settings For Fast Messaging

    The CTS1 setting should be set to Deasserted. This will deassert the control lines on the SEL-3031. Some protocols in devices require the control line to be in a high or low state to permit proper communication. For example, with DNP, some remote devices will not reply back to the master until the control line is deasserted.

  • Page 46: Figure 3.9 Sel-351 Port Settings For Fast Messaging

    Using an SEL Information Processor to Collect Relay Status and Measurements SEL-300 Series Settings The required settings for the SEL-351 are shown below. These settings are similar to all of the SEL-351, SEL-311, and SEL-700 family of relays. To establish a communication link via the radio, the most critical settings are PROTO, SPEED, BITS, PARITY, STOP, and RTSCTS.

  • Page 47: Figure 3.10 Example Auto Command Output

    A 20EVENTS A 20EVENTL *>> Figure 3.10 Example AUTO Command Output The AUTO command verifies initial configuration is set up. Refer to the SEL-2032 Instruction Manual for more information on setting up Fast Messaging. Date Code 20091009 SEL-3031 Instruction Manual...
  • Page 48 This page intentionally left blank...
  • Page 49 ® QuickSet SEL-5030 Software is a powerful settings and HMI tool ERATOR that aids in setting, applying, and using the SEL-3031 and other SEL devices. This section describes how to get started with your SEL-3031 and QuickSet. ERATOR Table 4.1...

  • Page 50: Section 4: Settings And Commands Pc Software

    Settings and Commands PC Software Communications QuickSet uses the device USB management port to communicate with ERATOR the SEL-3031. Perform the following steps to configure QuickSet to ERATOR communicate effectively with the device. Step 1. Click Communications from the QuickSet main...

  • Page 51: Figure 4.2 Serial Port Communications Parameters

    Configure the PC port to Data Speed 9600, Data Bits 8, Stop Bits 1, and Parity None. Step 4. Configure QuickSet to match the SEL-3031 default ERATOR settings by entering the Access Level 1 and Access Level 2 passwords in their respective text boxes.

  • Page 52: Figure 4.3 Terminal Window Menu

    The Device Editor driver will be discussed in more detail in Device Editor (Editor Mode). Compare the part number ( ) with the Model Option Table (MOT) to ensure PARTNO = 3031XXXXXXX correct device configuration. SEL-3031 Instruction Manual Date Code 20091009...

  • Page 53: Settings

    Open the Database Manager to access the database. Click File > Database Manager. A dialog box will appear. The default file already configured in QuickSet is Relay.rdb. This ERATOR database contains example settings files for the SEL products with which you can use QuickSet. ERATOR Step 2.
  • Page 54 Settings QuickSet allows you to create settings for one or more SEL-3031 ERATOR devices. Store existing device settings downloaded from the SEL-3031 by creating a library of settings, then modify and upload these settings from the library to an SEL-3031.

  • Page 55: Figure 4.5 Selection Of Drivers

    QuickSet uses the Z-number in the FID string to create a ERATOR particular version of settings. To get started, select File > New from the main menu bar, then select SEL-3031 and 001 from the Settings Editor Selection window as shown in Figure 4.5.

  • Page 56: Figure 4.6 Update Part Number

    Figure 4.7 New Setting Screen File > Open Select File > Open to open an existing device from the active database folder. QuickSet prompts for a device to load into the Device Editor. ERATOR SEL-3031 Instruction Manual Date Code 20091009...

  • Page 57: Table 4.2 Device Editor Menus

    Displays part number. Sending Settings Select Save, Send, or Print Device Settings from the File menu of the Device Editor once settings are entered into QuickSet. This will ensure that your ERATOR settings are not lost. Date Code 20091009 SEL-3031 Instruction Manual...

  • Page 58: Figure 4.8 Status Screen

    The Status screen provides a real-time view of the radio to which it is connected. A user can see the current status of the SEL-3031 and verify any alarm conditions. Select the Radio Status screen to view the radio statistics. Included is the RSSI value that displays the current strength of the receive signal.

  • Page 59: Table 4.3 Global Settings

    Global Settings Under the Global group settings category, set the device and host identifiers settings. The SEL-3031 displays the Device and Host Identifier strings at the top of the serial port commands responses, identifying messages from individual devices. Enter up to 30 characters, including capital letters A–Z, numbers 0–9, periods, and dashes.

  • Page 60: Table 4.4 Radio Settings

    The SEL-3031 will only operate on 10 of the 16 zones. The default setting is set to NONE. The SEL-3031 must use a minimum of 10 zones, so a setting of NONE will force the radio automatically SKIP zones 11–16. The SKIP setting can contain up...
  • Page 61 4.13 Settings The SEL-3031 has radio statistics to help set the SKIP setting if the availability of the radio is less than desired. In order to determine which frequency zones to skip, issue a RADio C command and operate the radios over a period of time. You will get better availability results the longer you let the radio run linked.

  • Page 62: Table 4.6 Port X Settings

    If PROTO is set to MB8, the 32-bit CRC will remove any data that does not pass the CRC. The data rate on all three ports is fixed at 19200 bps. If the unit has an SEL-3044 Encryption Card then the data rate is fixed at 9600 bps. NOTE:...

  • Page 63: Commands

    Most SEL devices require CTS deasserted in order for them to respond to DNP requests. The SEL-3031 does not support hardware flow control. It will only assert or deassert the CTS line to signal connected equipment to continue communication.
  • Page 64 When the device is in Access Level 2, the SEL-3031 sends the following prompt: =>> All of the Access Level 1 commands are available in Access Level 2. The SEL-3031 responds with when a command is entered from an access Invalid Access Level level lower than the required level for the command.

  • Page 65: Table 4.8 Date Command

    Settings and Commands 4.17 Commands ASCII Commands The SEL-3031 includes ASCII commands and settings to properly set the SEL-3031. QuickSet software provides a user-friendly interface to set the ERATOR SEL-3031, but either interface can be used to set the product.

  • Page 66: Table 4.10 Irig Command

    Use L_D to load firmware, as shown in Table 4.11. See Appendix A: Firmware and Manual Versions for information on firmware and instruction manual changes. Table 4.11 L_D Command Command Description Access Level Downloads firmware to the device. SEL-3031 Instruction Manual Date Code 20091009...

  • Page 67: Table 4.12 Pas Command

    This device is shipped with default passwords. Default passwords should be changed to private passwords at installation. Failure to change each default password to a private password may allow unauthorized access. SEL shall not be responsible for any damage resulting from unauthorized access.

  • Page 68: Table 4.14 Valid Password Characters

    Description Access Level Sends you to Access Level 0. Access Level 0 is the lowest access level; your SEL-3031 does not require a password check to descend to this level (or to remain at this level). RADIO Command The RAD command is for viewing statistics and data on the radio link, as shown in Table 4.16.

  • Page 69: Table 4.16 Rad Command

    The Overall is the tallied availability of each of the frequency zones used in the current hopping table. This number is valuable for measuring overall radio availability. The SEL-3031 also calculates the availability of each zone used in the current hopping table. The radio zones displayed in the RAD command are based on the SKIP setting.

  • Page 70: Table 4.17 Ser Command

    If s is not entered, the device starts at the first setting. For example, to directly jump to the TXPWR setting in the Radio setting category, enter SET R TXPWR <Enter>. This will take you directly to the TXPWR setting. SEL-3031 Instruction Manual Date Code 20091009...

  • Page 71: Table 4.19 Set Command Editing Keystrokes

    Append s and the specific settings name you want to view in the SHOW command to immediately jump to the setting. If s (and the settings name) is not included, the device presents settings beginning with the first in the group. Date Code 20091009 SEL-3031 Instruction Manual...

  • Page 72: Table 4.21 Sta Command (Device Self-Test Status)

    FPGA Firmware identifier string Text Data BFID Firmware identifier string Text Data BOOT Part Number Part Number of the SEL-3031 Text Data PORT 1, 2, 3 Protocol setting for port 1, 2, and 3 STANDARD, MB8, MODBUS SEL-3031 Instruction Manual Date Code 20091009...

  • Page 73: Table 4.23 Command Definitions

    0–23; the value mm is for minutes 0–59; the value ss is for seconds 0–59. If you enter a valid time, the device will update, save the time in nonvolatile memory, and display the time entered. If you enter an invalid time, the SEL-3031 will respond with Invalid Time...
  • Page 74 This page intentionally left blank...

  • Page 75: Section 5: Performance Monitoring, Testing, And Troubleshooting

    A good radio link should have 20 dBm of margin to account for environmental conditions and signal fade. The SEL-3031 receiver is rated at –97 dBm. If you observe a value of –77 dBm or greater then you are receiving a strong signal. If the value is less than –77 dBm that does not mean the radio link will not work;...

  • Page 76: Figure 5.1 Example Rad Command

    If the path study numbers do not match the actual results then either the data entered is incorrect or information about the locations was omitted. Contact SEL if you cannot get the calculated values to match the measured values.
  • Page 77 You may need to repeat these steps before the availability reaches the desired level. Note: There are 16 zones available in the SEL-3031 where a radio link only uses a maximum of 10 zones. Skipping zones will turn on zones not previously used and may give worse performance.

  • Page 78: Figure 5.2 Rbad Generation

    IRRORED operation when called upon to operate. The RBAD and CBAD bits provided in every SEL device with M can be used to alarm when the radio link is degraded IRRORED below levels needed for proper operation.

  • Page 79: Self-Test

    Checksum is continually computed Closed on code base. Flash (Settings) Performs a validity test every hour Closed on the settings. Processor Indicates processor failure. Closed Exception Indicates clock chip static RAM fail- Closed ures. Date Code 20091009 SEL-3031 Instruction Manual...

  • Page 80: Troubleshooting

    This must be set the same doesn't have the key set. on both radios. Cannot connect to the radio USB driver not installed Check for active SEL to through the USB port. properly. USB drivers from your PC in Device Manager Ports section.
  • Page 81 RAD command to check for signal strength. If the signal is low, try to re-aim both antennas to gain signal strength and check for bad antenna cables. See Section 2: Installation more information on proper radio installation. Date Code 20091009 SEL-3031 Instruction Manual...
  • Page 82 This page intentionally left blank...

  • Page 83: Appendix A: Firmware And Manual Versions

    U.Instruction Manual Firmware and Manual Versions Firmware Determining the Firmware Version in Your Device To find the version number of the firmware in your SEL-3031, use the STA command (see STATUS Command on page 4.24 for more information). The firmware revision number is after the R, and the release date is after the D.
  • Page 84 This page intentionally left blank...

  • Page 85: Figure B.1 Sel-3044 Encryption Card

    Anytime the SEL-3031 is used with critical data it is strongly advised to use the SEL-3044. If you do not use the SEL-3044, the data between the radios can be compromised. If you want to encrypt the radio link an SEL-3044 is required in both radios.

  • Page 86: Theory Of Operation—Sel Protocol

    ➤ Mitigation of other attacks The SEL-3044 meets FIPS 140-2 Level 2 requirements and has been submitted for FIPS 140-2 Level 2 security validation. The status is currently pending NIST approval. This level of data security provides assurance that best practices have been applied to the design, testing, and manufacturing of the SEL-3044.

  • Page 87: Device Security

    The SEL-3044 provides data encryption with a cryptographic key strength of 256 bits. The SEL-3044 RNG is designed so that all possible key values are equally likely. It is widely accepted throughout the cryptographic community that it is not realistically possible to mount a successful brute force (key guessing) attack on a 256-bit key space with technology available today.

  • Page 88: Figure B.2 In-Band Data Packet Format

    SEL-3044 devices. It also provides a cryptographic authentication mechanism for rejecting session requests by unauthorized devices. Session keys provide encryption of all protected user data prior to transmission. An SEL-3044 produces session keys at system startup, and periodically during sessions, using the process outlined by FIPS 186-2.

  • Page 89: Figure B.3 Operation Of The Aes Encryption Function

    K1 for encryption and K2 for decryption. The AES encryption algorithm the SEL-3044 uses is a symmetric block cipher with an encryption/decryption key size of 256 bits. The AES is the latest encryption standard adopted by NIST. In 1997, NIST challenged the cryptographic community to develop the next generation encryption algorithm to replace the aging DES and 3DES encryption standards.

  • Page 90: Ac Sel Erator

    Installing SEL-3044 in the SEL-3031 The SEL-3044 can be ordered at time of purchase of the radio or it may be added later as a field upgrade. The process involves powering down the radio, removing hardware, installing the card, and setting the radio.

  • Page 91: Figure B.4 Encryption Card Location

    Step 6. QuickSet to connect to the device and set the ERATOR KEY setting to enable the SEL-3044. Step 7. The KEY setting must be set the same on both SEL-3031 transceivers for proper operation. Date Code 20091009 SEL-3031 Instruction Manual...
  • Page 92 This page intentionally left blank...

Table of Contents