Comtech EF Data CRS-280L - Manual (Page 8)

CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1
Table of Contents MN/CRS280L.IOM
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1.1.1 Compatibility .............................................................................................................. 1–2
1.2 Physical Description...................................................................................................... 1–3
1.2.1 Front Panel .................................................................................................................. 1–3
1.2.2 Rear Panel ................................................................................................................... 1–3
1.2.3 Dimensional Envelope ................................................................................................ 1–4
1.3 Summary of Specifications ........................................................................................... 1–5
1.3.1 Typical Insertion Loss Graphs .................................................................................... 1–6
CHAPTER 2. INSTALLATION ................................................................................. 2–1
2.1 Unpacking and Inspection ............................................................................................ 2–1
2.2 Mounting ........................................................................................................................ 2–2
CHAPTER 3. CONNECTOR PINOUTS ................................................................... 3–1
3.1 Connector Overview ..................................................................................................... 3–1
3.2 Front Panel Connectors ................................................................................................ 3–3
3.2.1 Front Panel IF Connectors – Receive IF and Transmit IF, 50Ω Type ‘N’ ............... 3–3
3.3 Rear Panel Control Connectors ................................................................................... 3–4
3.3.1 Switch Control Interface Connectors .......................................................................... 3–4
3.3.1.1 J1 CRS Control Interface Connector, DB-25F ................................................... 3–4
3.3.1.2 J2 SMS Control Interface Connector, DB-15M ................................................. 3–4
3.3.2 Power / Ground Connections ...................................................................................... 3–5
3.3.2.1 Alternating Current (AC) Power Connectors ..................................................... 3–5
3.3.2.2 Direct Current (DC) Power Connectors (optional) ............................................. 3–5
3.3.2.3 Ground Connector ............................................................................................... 3–5
CHAPTER 4. CABLES AND CONNECTIONS ........................................................ 4–1
4.1 Overview ........................................................................................................................ 4–1
4.2 CRS-280L Control Cable Connections ....................................................................... 4–2
4.2.1 SMS-7000 1:8 Modem Protection Switch Control Cable Connection ....................... 4–2
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 ................................ 4–3
4.3 CRS-280L L-Band IF Cable Connections .................................................................. 4–8
4.3.1 L-Band IF Cable Characteristics ................................................................................. 4–8
4.3.2 L-Band Switch-to-Modem Cabling Requirements ..................................................... 4–8
4.3.3 L-Band Uplink/Downlink Cable Connections ............................................................ 4–9