Comtech EF Data RSU-503 User Manual
Page 10
Table of Contents
RSU-503 Redundancy Switch Unit
vi
Rev. 8
2.4.12 Monitor & Control (J16) .................................................................................................................... 2–20
2.4.13 GND (ERDE) ..................................................................................................................................... 2–21
2.5 External Cables.......................................................................................................................................... 2–22
2.6 Addressing .................................................................................................................................................. 2–24
CHAPTER 3. THEORY OF OPERATION .................................................................. 3–1
3.1 Power ............................................................................................................................................................ 3–1
3.2 Waveguide and Coax Switch Drivers......................................................................................................... 3–2
3.3 LNA............................................................................................................................................................... 3–2
3.4 M&C Operational Control ......................................................................................................................... 3–2
3.4.1 Communications Link ............................................................................................................................ 3–2
3.4.2 Switch Indicators .................................................................................................................................... 3–3
3.4.3 Auto/Manual Modes............................................................................................................................... 3–4
CHAPTER 4. MAINTENANCE ................................................................................... 4–1
4.1 Internal Switches ......................................................................................................................................... 4–1
4.2 Internal Indicators....................................................................................................................................... 4–2
4.3 Servicing with Power On ............................................................................................................................ 4–3
4.4 Troubleshooting ........................................................................................................................................... 4–4
4.5 Internal Connections ................................................................................................................................... 4–5
4.5.1 Serial Interfaces (J19, J20, J21) ............................................................................................................. 4–6
4.5.2 M&C Switch CMD and Indicators (J18)................................................................................................ 4–7
4.5.3 M&C Input/Output Signals (J17) ........................................................................................................... 4–8
APPENDIX A. RSU-503L OPTION ........................................................................... A–1
A.1 Description...................................................................................................................................................A–2
A.2 Assemblies....................................................................................................................................................A–2
A.3 External Connections .................................................................................................................................A–3
A.3.1 LNA Waveguide Switch Pinout (J10) ...................................................................................................A–5
A.4 External Cables ...........................................................................................................................................A–6
A.5 Addressing ...................................................................................................................................................A–7
APPENDIX B. REMOTE CONTROL OPERATION................................................... B–1