RSU-503 Redundancy Switch Unit Installation and Operation Manual Part Number MN/RSU503.
Errata A Comtech EFData Documentation Update Subject: Changes to Chapter 3 (Communications Link Jumper Setting) Date: Document: July 28, 1997 RSU-503 Redundancy Switch Unit Installation and Operation Manual, Rev. 8, dated April 4, 1997 MN/RSU503.EA8 Attach this page to page 3-1 Part Number: Collating Instructions: Comments: The following changes provide the correct information for jumper placement when choosing between RS-232 or -485. This information will be incorporated into the next revision.
Comtech EFData is an ISO 9001 Registered Company RSU-503 Redundancy Switch Unit Installation and Operation Manual Part Number MN/RSU503.IOM Revision 8 April 4, 1997 Special Instructions: This is the ninth edition of the manual. Change bars were not utilized. For an overview of changes made to Rev. 7, refer to the preface (“Overview of Changes to Previous Edition”). This revision supersedes part number MN/SDMRSU503 Rev. 7 dated January 22, 1996. Copyright © Comtech EFData, 2000 All rights reserved.
Warranty Policy This EFData Corporation product is warranted against defects in material and workmanship for a period of one year from the date of shipment. During the warranty period, EFData will, at its option, repair or replace products that prove to be defective. For equipment under warranty, the customer is responsible for freight to EFData and all related custom, taxes, tariffs, insurance, etc.
Preface About this Manual This manual provides installation and operation information for the EFData RSU-503 redundancy switch unit, referred to in this manual as “the switch.” This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the RSU-503 redundancy switch unit.
Preface RSU-503 Redundancy Switch Unit Trademarks Product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged. Related Documents The following documents are referenced in this manual: • • EFData Specification SP/3000 EFData KP-10 External Keypad Installation and Operation Manual Overview of Changes to Previous Edition A summary of the changes made to Rev.
RSU-503 Redundancy Switch Unit Preface Customer Support Contact the EFData Customer Support Department for: • • • • • Product support Information on returning a product Information on upgrading a product Product training Reporting comments or suggestions concerning manuals An EFData Customer Support representative may be reached at: EFData Corporation Attention: Customer Support Department 2105 West 5th Place Tempe, Arizona 85281 USA (602) 968-0447 (Main EFData Number) (602) 517-2444 (Customer Support D
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Table of Contents CHAPTER 1. INTRODUCTION.................................................................................. 1–1 1.1 Overview....................................................................................................................................................... 1–2 1.2 Assemblies .................................................................................................................................................... 1–4 1.3 Specifications.............................
Table of Contents RSU-503 Redundancy Switch Unit 2.4.12 Monitor & Control (J16) .................................................................................................................... 2–20 2.4.13 GND (ERDE) ..................................................................................................................................... 2–21 2.5 External Cables....................................................................................................................................
RSU-503 Redundancy Switch Unit Table of Contents B.1 General.........................................................................................................................................................B–2 B.2 Message Structure.......................................................................................................................................B–2 B.2.1 Start Character ...............................................................................................................
Table of Contents RSU-503 Redundancy Switch Unit Figures Figure 1-1. Figure 1-2. Figure 2-1. Figure 2-2. Figure 2-3. Figure 2-4. Figure 2-5. Figure 4-1. Figure 4-2. Figure 4-3. Figure A-1. Figure A-2. Figure A-3. Figure A-4. RSU-503 ....................................................................................................................................... 1–1 RSU-503 Interconnect Block Diagram .........................................................................................
1 Chapter 1. INTRODUCTION This chapter provides an overview, included assemblies, and specifications for the RSU-503 (Figure 1-1). Note: Refer to Appendix A for information on the RSU-503L, a low-loss version of the RSU-503. Figure 1-1. RSU-503 Rev.
Introduction RSU-503 Redundancy Switch Unit 1.1 Overview The switch is a fully automated 1:1 protection switch designed to work with the following EFData Radio Frequency Terminals (and their amplifiers): • • • • • • • RFT-500 RFT-505 RFT-700 RFT-705 RFT-1200 (for RSU-503L information, refer to Appendix A) RFT-1225 (for RSU-503L information, refer to Appendix A) KST-2000 (for RSU-503L information, refer to Appendix A) Note: All references in this document to “RFT” apply to all the models listed above.
RSU-503 Redundancy Switch Unit Introduction Although there are no external indicators or switches (due to the nature of the weatherproof housing), there is an access panel that can be removed, allowing use of internal switches and indicators (refer to Chapter 4 for more information). Note: The internal indicators and switches are only used for factory testing and troubleshooting. The system, during setup and while running, is intended to be controlled remotely.
Introduction RSU-503 Redundancy Switch Unit 1.2 Assemblies The switch consists of the following assemblies: Assembly Top Assembly RSU-503 Cable Harness Chassis Base Panel Divider M&C Assembly, RSU-503 M&C Firmware, RSU-503 EFData Part # PL/3000 PL/3001 FP/3802 FP/3139 PL/3002 FW/3080-1 1.3 Specifications Table 1-1 lists the operating specifications for the switch. Note: For more information pertaining to RSU-503 specifications, refer to EFData Specification SP/3000. Table 1-1.
2 Chapter 2. INSTALLATION This chapter provides installation instructions and external connector information for the switch. 2.1 Unpacking Generally, the switch and manual are shipped as part of a redundant terminal system, and are packaged in a wooden crate along with the redundant LNA plate and cables. 1. Remove the screws from the lid of the wooden crate, and remove the lid. 2. Remove the unit and manual from the cardboard and foam enclosure. Note: Save the packing material for reshipment.
Installation RSU-503 Redundancy Switch Unit 2.2 Inspecting the Equipment 1. Carefully check the equipment for damage incurred during shipment. 2. Carefully check the equipment against the packing list shipped with the equipment to ensure that the shipment is complete. Refer to the following paragraphs. 2.2.1 Included Parts Note: Parts are not drawn to scale. Qty. 1 Description RSU-503. Qty. 1 Description Installation and operation manual.
RSU-503 Redundancy Switch Unit Installation 4 Pipe block. 6 5/16-18 spring nut. 2 EFData Part # HW/BLK-PIPE2-8. Used for round pole mount only. Threaded rod, 5/16-18 x 14”. 4 EFData Part # HW/5/16-18SPNUT. Flat fitting plate, 5/16”. 3 EFData Part # HW/RD5/16-18X14. Used for round and square pole mount only. 1/4-20 x 1” bolt. 3 EFData Part # HW/FIT-PLT-5/16. 1/4” flat washer. 3 EFData Part # 03P1079. 1/4” split lockwasher. EFData Part # O4P1022. EFData Part # HW/1/4-SPLIT. Rev.
Installation RSU-503 Redundancy Switch Unit 2.3 Switch Installation At the customer’s discretion, the switch can be installed anywhere on or near the antenna. The supplied hardware allows the installer a wide range of installation alternatives, including: • Vertical pole (e.g., mast) (either square or round). This is the most typical installation. • Within the hub of a large antenna. • Spar (i.e., rectangular bar) on the antenna structure.
RSU-503 Redundancy Switch Unit Installation Figure 2-1. RSU-503 Dimensions Note: All dimensions in inches. Rev.
Installation 6 RSU-503 Redundancy Switch Unit Rev.
RSU-503 Redundancy Switch Unit Installation 2.3.1 Tools Required Qty. 1 Description 3/8” drive ratchet. 1 3” x 3/8” drive extension. 1 7/16” x 3/8” drive socket. (Metric equivalent: 11mm, 6 pt.) 1 1/2” x 3/8” drive socket. (Metric equivalent: 12mm, 6 pt.) 1 1/2” combination wrench. (Metric equivalent: 12mm combination wrench with a 6 pt. box end.) 2.3.2 Vertical Pole Installation 2.3.2.1 Round Pole The process described is for a typical installation.
Installation RSU-503 Redundancy Switch Unit To install the switch to a round vertical pole: 1. Set the switch on its side, with the mounting holes facing up. 2. Install the 14” unistrut as follows: a. Position a 14” long unistrut (with the open side facing up) over the mounting holes on the unit. b. Using three 1/4-20 x 5/8” bolts, 1/4” split lockwashers, and 1/4” flat washers, attach the unistrut to the switch. c. Tighten the bolts firmly. 3. Install the pipe blocks as follows: a.
RSU-503 Redundancy Switch Unit Installation (2) Press down on the spring nut to compress the spring, and rotate the nut 90° (perpendicular to the unistrut). (3) Release pressure on the spring nut. (4) Repeat Steps 3.b.(1) through 3.b.(3) for each spring nut. c. Using four 5/16-18 x 1” bolts, 5/16” split lockwashers, and 5/16” flat washers, loosely secure the pipe blocks to the spring nuts in each 14” unistrut.
Installation RSU-503 Redundancy Switch Unit b. To install each spring nut: (1) Place the spring nut in the unistrut channel, spring side down, with its wide side parallel with the unistrut channel. (2) Press down on the spring nut to compress the spring, and rotate the nut 90° (perpendicular to the unistrut). (3) Release pressure on the spring nut. (4) Repeat Steps 4.b.(1) through 4.b.(3) for each spring nut. c. Thread a 5/16-18 nut approximately 1-1/2” onto each threaded rod.
RSU-503 Redundancy Switch Unit Installation Notes: 1. Be sure to position the flanges of the fitting plates in the grooves of the unistruts. 2. Before tightening the nuts on the threaded rods, ensure that the end of each rod is screwed in until it is flush with the backside of the unistrut. This ensures the rods are threaded completely through the spring nuts. Tighten each nut firmly. f. Thread a 5/16-18 nut about 2” onto the end of each threaded rod. g.
Installation RSU-503 Redundancy Switch Unit 2.3.2.2 Square Pole For square vertical pole installation, follow the steps in Section 2.3.2.1, with the following exceptions: • • 12 Do not perform Step 3. Do not perform Step 5.e. Rev.
RSU-503 Redundancy Switch Unit Installation 2.3.3 Spar Installation Note: The process described is for a typical installation. Custom kits may be ordered and are beyond the scope of this manual. To install the switch to a spar: 1. Set the unit on its side, with the mounting holes facing up. 2. Install a 14” unistrut. a. Position a 14” unistrut (with the open side facing up) over the mounting holes on the switch. b.
Installation RSU-503 Redundancy Switch Unit (3) Release pressure on the spring nut. (4) Repeat Steps 3.b.(1) through 3.b.(3) for each spring nut. c. Lift the switch into position. d. Using two 5/16-18 bolts, 5/16” split lockwashers, and 5/16” flat washers, bolt the spar bracket in place. d. Tighten the bolts firmly. 14 Rev.
RSU-503 Redundancy Switch Unit Installation 2.4 External Connections All connections between the switch and other equipment are made through front panel connections, as shown in Table 2-1 (refer to Figure 2-2 for connector locations). Failure to properly connect the units will result in loss of communications between the switch and the RFTs. CAU TIO N Table 2-1.
Installation RSU-503 Redundancy Switch Unit Figure 2-2. RSU-503 External Connections 16 Rev.
RSU-503 Redundancy Switch Unit Installation 2.4.1 TX/IF Output (J1, J5) The TX/IF Output connectors are TNC connectors, each with an impedance of 50Ω. These connectors carry the IF uplink signal to the online RFT (Unit A or B). 2.4.2 RX/IF Input (J2, J6) The RX/IF Input connectors are TNC connectors, each with an impedance of 50Ω. These connectors carry the IF downlink signal from the online RFT (Unit A or B). 2.4.
Installation RSU-503 Redundancy Switch Unit 2.4.4 M&C (J4, J8) The M&C connectors are used to interface with Units A and B, respectively.
RSU-503 Redundancy Switch Unit Installation 2.4.5 TX/RF Output (J9) The TX/RF Output connector is a 50Ω type N connector that carries the transmit uplink signal from the online RFT (Unit A or B) to the antenna. 2.4.6 Waveguide Switch (J10) The Waveguide Switch connector connects the switch to the LNA plate using a 1:1 cable. 2.4.6.
Installation RSU-503 Redundancy Switch Unit 2.4.6.2 LNA Plate to Waveguide Switch The following table outlines the pinouts of the LNA plate to Waveguide Switch cable. This cable is internal on the redundant LNA plate. Note: This pinout table may be helpful if an EFData Waveguide Switch is used.
RSU-503 Redundancy Switch Unit Installation 2.4.12 Monitor & Control (J16) The Modem Terminal Interface (MTI) connector is the remote control interface connector. Included on this connector are RS-232/485 communication lines and a summary fault indication. For standard RS-232/485 applications, an adapter cable is available to connect the 26-pin circular connector to a standard 9-pin D. Refer to Figure 2-3 for an illustration of the adapter cable and its pinouts.
Installation RSU-503 Redundancy Switch Unit The MTI connector is a 26-pin circular female connector with the following pinouts: Pin # A B C D E F G H J K L M N P R S T U V W X Y Z a b c Name RS-232 GND CTS RD/RX RTS TD/TX DSR RS-485 -RX/TX -RX/TX +RX/TX +RX/TX GND Reserved EXT_PWR EXT FLT1 #A EXT FLT1 #B N/C Ground Reserved Reserved Reserved Reserved FLT NC FLT COM FLT NO Reserved Reserved Reserved Function Clear to Send Receive Data Ready to Send Transmit Data Data Set Ready Ground Output, 11V for
RSU-503 Redundancy Switch Unit Installation 2.5 External Cables Refer to Figures 2-4 and 2-5 for diagrams of the two different external multi-conductor cables used with the switch in a redundant system. Figure 2-4. RSU-503 M&C, J4 and J8 (to RFT) Rev.
Installation RSU-503 Redundancy Switch Unit Figure 2-5. RSU-503, J10 to Waveguide Switch Plate Note: Be sure to connect the primary RFT (A) to J4, and the backup RFT (B) to J8. 24 Rev.
RSU-503 Redundancy Switch Unit Installation 2.6 Addressing The following are the factory default addresses: • • • Switch is set to address 1 RFT A is set to address 2 RFT B is set to address 3 The proper M&C cable hook-up is critical: • • RFT A must be connected to the switch Port A RFT B must be connected to the switch Port B Note: If these connections are reversed, no communications will take place. Rev.
3 Chapter 3. THEORY OF OPERATION This chapter provides the basic theory for the following: • • • • Switch power Waveguide and coax switch drivers LNA M&C operational control 3.1 Power In a redundant system, the switch is powered from either of the two RFT terminals via the M&C interconnect cable. External DC power (approximately 10.8V) enters the M&C on pins 1 and 2 of connector J17 (25-pin D), and is “ORed” through diodes CR1 and CR2.
Theory of Operation RSU-503 Redundancy Switch Unit 3.2 Waveguide and Coax Switch Drivers The microcontroller creates the 500 millisecond pulses to control the positions of all four transfer switches. Photovoltaic opto-isolated switches U8, U9, U10, and U11 transform the +5V logic into 30V pulses to drive the latching coils of the switches. Each microwave transfer switch contributes 0.3 dB of insertion loss, with a minimum of 70 dB of isolation. 3.
RSU-503 Redundancy Switch Unit Theory of Operation Although the switch M&C is considered to be the slave unit on the MTI RS-232 bus, it becomes the master when communicating to each of the two RFTs. When not servicing MTI requests, the M&C monitors indicators, faults, and voltages. When applicable, it generates switch-over pulses. When polled from the MTI, the switch M&C will perform the following functions: 1. Return a response acknowledging receipt of the command. 2.
Theory of Operation RSU-503 Redundancy Switch Unit B4 IF_A B5 RF_A B6 IF_B 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 Downlink B7 WR8000, B2 RF_B 1= A ON LINE 0 = B ON LINE 0 1 1 1 0 1 1 1 0 0 1 0 0 0 1 0 0 1 1 1 0 1 1 1 0 0 1 0 0 0 1 0 WR8000, B5 1 = OKAY 0 = AMBIGUITY FAULT 0 0 0 1 - Valid state, A online 0 0 0 0 0 0 0 0 1 - Valid state, B online 0 0 0 3.4.
4 Chapter 4. MAINTENANCE This chapter provides information on the following: • • • Internal switches, indicators, and connections How to service the switch with the power on Troubleshooting Note: Under normal conditions, this switch does not require periodic or preventive maintenance. Most problems, if any, will arise during the initial installation. These problems will most often be due to improper cabling, waveguide wiring, or indicator positions. 4.
Maintenance RSU-503 Redundancy Switch Unit 4.2 Internal Indicators The switch does not have any external indicators. The internal indicators (shown in Figure 4-1) are not normally used by the operator. However, if the switch must be opened, descriptions of the indicators are provided in the following table.
RSU-503 Redundancy Switch Unit Maintenance 4.3 Servicing with Power On If maintenance must be performed on the unit while the link remains on the air, proceed as follows: 1. Loosen the access panel screws on the side of the switch case (refer to Figure 4-2) to expose the internal M&C Logic Control PCB. Figure 4-2. Access Panel 2. Observe the LEDs on the M&C board, which will indicate the following: a. b. c. d. e. f. g. h. i. j. k. l. m. n.
Maintenance RSU-503 Redundancy Switch Unit 4.4 Troubleshooting The following paragraphs may be used to diagnose problems within the system. Locate the malfunction in the left column that most closely matches the situation. Then, read across to the possible problem. All conditions except the first can be observed only when the cover of the switch is removed. Refer to Figure 4-1 for LED locations.
RSU-503 Redundancy Switch Unit Maintenance 4.5 Internal Connections The internal connections are not normally seen by the user, since the switch is designed to prevent the weather from damaging the internal circuitry. However, if the switch must be opened, pinouts of the three internal connectors have been provided. Refer to Figure 4-3 for location of the internal connections. Figure 4-3. Internal Connections Rev.
Maintenance RSU-503 Redundancy Switch Unit 4.5.1 Serial Interfaces (J19, J20, J21) The internal Serial Interface connectors are 9-pin D with the following pinouts: Pin # 1 2 3 4 5 6 7 8 9 Name RS-232 RS-485 GND TD/TX RD/RX +RX/TX GND DSR RTS -RX/TX CTS -RX/TX Function Transmit Data Receive Data Data Set Ready (Tied high) Ready to Send Clear to Send (see Note 1) (see Note 2) (see Note 2) Notes: 1. J19 and J20 do not use DSR on pin 6. 2.
RSU-503 Redundancy Switch Unit Maintenance 4.5.2 M&C Switch CMD and Indicators (J18) This connector is a 37-pin female D connector with the following pinouts: Pin # 1 20 2 21 3 22 4 23 5 24 6 25 7 26 8 27 9 28 10 29 11 30 12 31 13 32 14 33 15 34 16 35 17 36 18 37 19 Rev.
Maintenance RSU-503 Redundancy Switch Unit 4.5.
A Appendix A. RSU-503L OPTION This appendix describes the RSU-503L (Figure A-1), a low-loss version of the RSU-503. Note: The RSU-503 and RSU-503L are similar units. As a result, only the primary differences of the RSU-503L are provided in this appendix. Figure A-1. RSU-503L Front Panel Rev.
RSU-503L Option RSU-503 Redundancy Switch Unit A.1 Description Refer to Figure A-2 for an interconnection block diagram of the RSU-503L in a typical earth station application. Using WR229 (C-band) or WR75 (Ku-band) waveguide, the RSU-503L routes the RF outputs from both RFTs directly to a waveguide switch on the antenna plate. In addition to the RSU-503 functions, the RSU-503L provides command pulses for the external uplink waveguide switch (28V). A.
RSU-503 Redundancy Switch Unit RSU-503L Option A.3 External Connections Note: The following connections, available on the RSU-503, are not available with the RSU-503L: • • • TX/RF Input (J3, J7) TX/RF Output (J9) TX/RF Output (J11) (test output only) Failure to properly connect the units will result in loss of communications between the switch and the RFTs.
RSU-503L Option RSU-503 Redundancy Switch Unit Figure A-3. RSU-503L External Connections A–4 Rev.
RSU-503 Redundancy Switch Unit RSU-503L Option A.3.1 LNA Waveguide Switch Pinout (J10) Name Command, LNA Position 1 LNA Command Common Command, LNA Position 2 LNA Indicator, Position 1 LNA Indicator, Common LNA Indicator, Position 2 Command, RF Position 1 RF Command Common Command, RF Position 2 RF Indicator, Position 1 RF Indicator, Common RF Indicator, Position 2 LNA PWR #A LNA RTN #A LNA PWR #B LNA RTN #B Chassis Ground Rev.
RSU-503L Option RSU-503 Redundancy Switch Unit A.4 External Cables Refer to Figure A-4 for a diagram of the waveguide switch cable and Table A-2 for cable dimensions.
RSU-503 Redundancy Switch Unit RSU-503L Option Table A-2. Waveguide Switch Cable Dimensions Dimension “A” 12 ft. 17 ft. 22 ft. Dimension “B” 10 ft. 15 ft. 20 ft. A.
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B Appendix B. REMOTE CONTROL OPERATION This appendix describes the remote control operation of the RSU-503 and RSU-503L. • • Firmware number: Software version: FW/3080-1P 1.14 Notes: 1. Unless indicated otherwise, any references in this appendix to “the switch” apply to both the RSU-503 and RSU-503L. 2. Before operating the system, ensure the installation is complete and the cable connectors are tight, especially the connections from the waveguide switch indicators.
Remote Control Operation RSU-503 Redundancy Switch Unit B.1 General Remote controls and status information are transferred via an RS-485 (optional RS-232) serial communications link. Commands and data are transferred on the remote control communications link as US ASCII-encoded character strings. The remote communications link is operated in a half-duplex mode. Communications on the remote link are initiated by a remote controller or terminal.
RSU-503 Redundancy Switch Unit Remote Control Operation The general message structure is as follows: • • • • Start Character Device Address Command/Response End of Message Character B.2.1 Start Character A single character precedes all messages transmitted on the remote link. This character flags the start of a message. This character is: • • “<” for commands “>” for responses B.2.
Remote Control Operation RSU-503 Redundancy Switch Unit B.2.3 Command/Response The command/response portion of the message contains a variable-length character sequence which conveys command and response data. If the switch receives a message addressed to it which does not match the established protocol or cannot be implemented, a negative acknowledgment message is sent in response. This message is: • >add/?ER1_parity error'cr''lf'] (Error message for received parity errors.
RSU-503 Redundancy Switch Unit Remote Control Operation B.3 Switch Redundancy Commands/Responses B.3.1 RFT Commands/Responses For information on remote control operation of the two individual RFT units, refer to the remote control operation specification in the RFT Radio Frequency Terminal Installation and Operation Manual. B.3.2 Configuration Commands/Responses The following commands control the redundancy configuration and its operating modes.
Remote Control Operation Redundant System Comm Poll Command : Response: Response: RSU-503 Redundancy Switch Unit add/POLL_A'cr' Address = XXX'cr' Baud Rate = YYYYY'cr' Parity = ZZ'cr''lf']
RSU-503 Redundancy Switch Unit Remote Control Operation B.3.
Remote Control Operation Redundancy Fault Status Command : Response: RSU-503 Redundancy Switch Unit add/RFS_'cr' XVA_XXX'cr' XVB_XXX'cr' P05_XXX'cr' P32_XXX'cr' ULA_XXX'cr' ULB_XXX'cr' ULS_XXX'cr' DLA_XXX'cr' DLB_XXX'cr' DLS_XXX'cr''lf'] Where: XXX = OK or FLT. Input power from Unit A. XXX = OK or FLT. Input power from Unit B. XXX = OK or FLT. Internal +5V power. XXX = OK or FLT. Internal +32V power. XXX = OK or FLT. Uplink fault on Unit A. XXX = OK or FLT. Uplink fault on Unit B.
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G Glossary The following is a list of acronyms and abbreviations that may be found in this manual. Acronym/ Abbreviation Ω A A/D C CMD COM CR CTS dB DC DL DSR EEPROM EXT FLT GHz GND IF IND lbs LED LNA M&C MAN Max MHz MTI NC NO PCB PWR Rev.
Glossary RSU-503 Redundancy Switch Unit RD RF RFT RMA RSU RTN RTS RX SP SUM SW TD TWT TX UL V W WG g–2 Receive Data Radio Frequency Radio Frequency Terminal Return Material Authorization Redundancy Switch Unit Return Ready to Send Receive Specification Summary Switch Transmit Data Traveling Wave Tube Transmit Uplink Volts Watts Waveguide Rev.
RSU-503 Redundancy Switch Unit Index I —A— Addressing, 2–24, A–7 Auto/Manual Modes, 3–4 —C— Communications Link, 3–2 —M— M&C (J4, J8), 2–17 M&C Input/Output Signals (J17), 4–8 M&C Operational Control, 3–2 M&C Switch CMD and Indicators (J18), 4–7 Message Structure, B–2 Monitor & Control (J16), 2–20 —P— —D— Power, 1–2, 1–4, 3–1, 4–3, 4–7 Device Address, B–3 —R— —E— End Character, B–4 External Cables, 2–22, A–6 —G— RFT Commands/Responses, B–5 RX/IF Input (J2, J6), 2–16 RX/IF Output (J13), 2–19 RX/IF
Index TX/IF Output (J1, J5), 2–16 TX/RF Input (J3, J7), 2–16, A–3 TX/RF Output (J11), 2–19, A–3 TX/RF Output (J9), 2–18, A–3 i–2 RSU-503 Redundancy Switch Unit —W— Waveguide and Coax Switch Drivers, 3–2 Waveguide Switch (J10), 2–18 Waveguide Switch Cable Dimensions, A–7 Waveguide Switch Pinout (J10), 2–18, A–5 Rev.
