Bnc Connectors; Unit Alarms; Table 5. Bnc Connectors; Table 6. Alarm Interface Connector Pin Assignments - Comtech EF Data CDM-570L Installation And Operation Manual

CDM-570L Satellite Modem with IP Module

5.5 BNC Connectors

There are three BNC connectors located on the rear panel of the modem. Refer to Table 5
for pin assignments.

Table 5. BNC Connectors

Connector
EXT REF
G.703 Out
G.703 In

5.6 Unit Alarms

Unit alarms are provided on a 15-pin male connector located on the rear panel of the
modem. Refer to Table 6 for pin assignments.

Table 6. Alarm Interface Connector Pin Assignments

Pin #
8
15
7
14
6
13
5
12
4
11
3
10
2
9
1
BNC
External Reference Input
Rx G.703 (Unbalanced)
Tx G.703 (Unbalanced)
Signal Function
Rx Traffic (De-energized, Faulted)
Rx Traffic (Energized, No Fault)
Rx Traffic
Tx Traffic (De-energized, Faulted)
Tx Traffic (Energized, No Fault)
Tx Traffic
Unit Fault (De-energized, Faulted)
Unit Fault (Energized, No Fault)
Unit Fault
Rx I Channel (Constellation monitor)
Rx Q Channel (Constellation monitor)
No Connection
AGC Voltage (Rx signal level, 0 to 10 volts)
EXT Carrier OFF
Ground
Description
22
Revision 1
MN/CDM570L.IOM
Direction
In
Out
In
Name
RX-NC
RX-NO
RX-COM
TX-NC
TX-NO
TX-COM
UNIT-NC
UNIT-NO
UNIT-COM
RX-I
RX-Q
N/C
AGC
EXT-OFF
GND