Comtech EF Data CDM-700 - Manual (Page 51)

CDM-700 High Speed Satellite Modem Revision 5
Connector Pinouts MN/CDM700.IOM
5.1.6 Alarm Connector Pinout – P1
The P1 Alarm interface is a 15-Pin type ‘D’ male connector with threaded jack
nuts. The pinout depends upon whether the unit is in Normal mode, or in
Redundancy mode for use with the CRS-170A (L-Band), CRS-180 (70/140
MHz), CRS-300, or CRS-700 redundancy switches.
The unit is put into 1:1 mode (available only in the Rev. A or later chassis) under the
Config:
AUX Æ 1:1 Mask Æ Ena/Dis menu by selecting Enable .
Initially released modems (chassis versions prior to Rev. A) do not support 1:1 redundancy. There
is no upgrade program to support redundancy for these chassis.
Alarm Connector Pinout P1 – Normal Mode
Pin # Description Name Direction
8 Rx Traffic (De-energized, Faulted) Rx-NC I/O
15 Rx Traffic (Energized, No Fault) Rx-NO I/O
7 Rx Traffic Rx-COM I/O
14 Tx Traffic (De-energized, Faulted) Tx-NC I/O
6 Tx Traffic (Energized, No Fault) Tx-NO I/O
13 Tx Traffic Tx-COM I/O
5 Unit Fault (De-energized, Faulted) Unit-NC I/O
12 Unit Fault (Energized, No Fault) Unit-NO I/O
4 Unit Fault Unit-Com I/O
11 Rx I Channel (Constellation Monitor) Rx-I O
3 Rx Q Channel (Constellation Monitor) Rx-Q O
10 No Connection NC NC
2 AGC Voltage (Rx signal level, 0-10 volts) AGC O
9 Ext Carrier Off EXT-OFF I
1 Ground GND Gnd
5–5