Comtech EF Data CRS-280, Installation And Operation Manual, Page: 4 / 70

C-280/280L IF Switch for 1:N Redundancy
Revision -
Table of Contents TOC-2 MN-CRS-280/280L
3.1.2 CRS-280L Connector Overview................................................................................................ 3–4
3.2 Front Panel Connectors ............................................................................................................. 3–6
3.3 Rear Panel Control Connectors ................................................................................................. 3–6
3.3.1 CRS-280 Switch Control Interface Connector .......................................................................... 3–6
3.3.1.1 J1 CRS Control Interface Connector, DB-25F .............................................................. 3–6
3.3.2 CRS-280L Switch Control Interface Connectors ...................................................................... 3–7
3.3.2.1 J1 CRS Control Interface Connector, DB-25F .............................................................. 3–7
3.3.2.2 J2 SMS Control Interface Connector, DB-15M ............................................................. 3–7
3.3.2.3 Power / Ground Connections ........................................................................................ 3–8
3.3.2.3.1 Alternating Current (AC) Power Connectors .................................................. 3–8
3.3.2.3.2 Direct Current (DC) Power Connectors (optional) ......................................... 3–8
3.3.2.4 Ground Connector ......................................................................................................... 3–9
CHAPTER 4. CABLES AND CONNECTIONS ......................................................... 4–1
4.1 Overview ...................................................................................................................................... 4–1
4.2 Control Cable Connections ........................................................................................................ 4–2
4.2.1 SMS-7000 1:8 Modem Protection Switch Control Cable Connection ...................................... 4–3
4.2.2 CRS-400 1:8 Redundancy Switch Control Cable Connection .................................................. 4–3
4.2.3 CRS-300 1:N Redundancy Switch Control Cable Connection ................................................. 4–3
4.2.4 CRS-500 M:N Redundancy System Control Cable Connection ............................................... 4–4
4.3 Cable Connections .................................................................................................................... 4–11
4.3.1 CRS-280 IF Cable Connections ............................................................................................. 4–11
4.3.2 CRS-280L L-Band IF Cable Connections ............................................................................... 4–11
4.3.3 L-Band IF Cable Characteristics ............................................................................................. 4–11
4.3.4 L-Band Switch-to-Modem Cabling Requirements .................................................................. 4–11
4.3.5 L-Band Uplink/Downlink Cable Connections .......................................................................... 4–12
CHAPTER 5. REDUNDANCY SYSTEM CONFIGURATION / OPERATION ............ 5–1
5.1 Overview ...................................................................................................................................... 5–1
5.2 CRS-280L Input Power Cord Connections ............................................................................... 5–1
5.3 1:N Redundancy System Power-up Sequence ........................................................................ 5–2
5.3.1 CRS-280L operations with the CRS-500 M:N Redundancy System ........................................ 5–2
APPENDIX A. CABLE DRAWINGS ......................................................................... A-1
A.1 Introduction ................................................................................................................................. A-1
A.2 Control Interface Cables ............................................................................................................. A-2
A.2.1 SMS-7000 Control Cable ...........................................................................................................A-3
A.2.2 CRS-400/CRS-300 Control Cable .............................................................................................A-4
A.2.3 CRS-500 Control Cable .............................................................................................................A-5
A.3 IF Interface Cable, Type ‘N’ 50
Ω ................................................................................................. A-6
APPENDIX B. CRS-280L POWER SUPPLY MODULE REPLACEMENT ............... B–1
B.1 Introduction ................................................................................................................................ B–1
B.2 Power Supply Module Removal Procedure ............................................................................. B–3
B.3 Power Supply Module Installation Procedure ......................................................................... B–5