Front Panel Utility Connectors; Ext Ref, 50Ω Bnc; Idr Alarms Connector, Db-15F; Front Panel Power Connections - Aux Dc Inputs - Comtech EF Data CRS-150 Installation And Operation Manual

CRS-150 1:1 Redundancy Switch
Connector Pinouts
3.2.3

Front Panel Utility Connectors

3.2.3.1 Ext Ref, 50Ω BNC
This is 50Ω BNC female connector is used for operating an external station reference. It
requires an EIA-422 compatible level, so this unbalanced input should have a zero volt
(0V) offset and a swing of at least ±2V into the 120Ω termination provided.
3.2.3.2

IDR Alarms Connector, DB-15F

Pin #
2
9
1
10
4
11
3
6
13
5
14
8
15
7
12
3.2.4 Front Panel Power Connections – Aux DC Inputs
The front panel of the CRS-150 incorporates two independent DC inputs (using 2.1
mm sockets, with the outer conductor grounded). Comtech EF Data can supply the
appropriate AC/DC supply, complete with IEC power input connector (Part number
PS/AC18W01P01).
For more information about Comtech EF Data accessories that make use of this interface, see
Chapter 1. INTRODUCTION.
The 15-pin Type 'D' female (DB-15F) IDR Alarms
provides four Form-C backward alarm outputs specified by Intelsat.
IDR Alarms Connector (DB-15F)
Signal Function
Backward Alarm 1 is active
Backward Alarm 1 is not active
TBD
Backward Alarm 2 is active
Backward Alarm 2 is not active
Backward Alarm 3 is active
Backward Alarm 3 is not active
TBD
Backward Alarm 4 is active
Backward Alarm 4 is not active
Ground
BA-1-COM
BA-2-COM
BA-3-COM
BA-4-COM
3–8
Revision 2
MN/CRS150.IOM
interface connection
Name
BA-1-NO
BA-1-NC
MON-A
BA-2-NO
BA-2-NC
BA-3-NO
BA-3-NC
MON-B
BA-4-NO
BA-4-NC
GND