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CDM-710G High-Speed Satellite Modem
Rear Panel Connector Pinouts
4.4
Utility Connections
4.4.1
P1 Alarms Connector, DB-15M
Pin #
8
15
7
14
6
13
5
12
4
11
3
10
2
9
1
P1 Alarms Connector Pinout – 1:N (CRS-300/710G) and 1:1 Mode (CRS-170A, CRS-180)
Pin #
8
15
7
14
6
13
5
12
4
11
3
10
2
9
1
The P1 Alarms connector is a 15-Pin Type 'D' male interface with threaded jack
nuts. The pinout depends upon whether the unit is in the Normal or Redundancy
mode for use with the CRS-170A (L-Band) and CRS-180 (70/140 MHz) or
CRS-300 redundancy switches. The unit is put into 1:1 mode under the Config:
AUX
1:1 Mask
pinout is as follows:
P1 Alarms Connector Pinout – Normal Mode
Description
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, 0-10 volts)
Ext Carrier Off (TTL Lo = Mute, Open = Tx)
Ground
Description
Summary Relay NC (De-energized, Faulted)
Summary Relay NO (Energized, No Fault)
Summary Relay COM
Clock Detect
Aux Tx Enable
No Connection
Fused -12 VDC Output (160 mA max)
Fused +12 VDC Output (160 mA max)
Online
Serial Clock
Serial Data
Receive Serial Data – auxiliary channel
Transmit Serial Data – auxiliary channel
Ext Carrier Off (TTL Lo = Mute, Open = Tx)
Ground
Ena/Dis menu by selecting Enable. The P2 connector
Note 1, 2
Rx-NC
Rx-NO
Rx-COM
Note 1, 2
Tx-NC
Tx-NO
Tx-COM
Note 1, 2
Unit-NC
Unit-NO
Unit-Com
Rx-I
Rx-Q
NC
AGC
EXT-OFF
GND
PR-NC, *
PR-NO
Note 1, 2
PR-COM
Clk Det
Red_Out_4
NC
-12VDC
+12VDC
Red_In_2
Red_Out_1
Red_Out_2
Red_In_3
Red_Out_3
Red_In_1
GND
4–4
Revision 1
MN-CDM710G
Name
Direction
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
NC
O
I
Gnd
Name
Direction
I/O
I/O
I/O
I
O
NC
O
O
I
O
O
I
O
I
Gnd
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