Alarms Connector, Db-15M; Pmsi Connector, Db-9F; Table 3-11. Alarm Interface Connector Pin Assignments; Table 3-12. Pmsi (Pre-Mapped Symbol Interface) Connector Pin Assignments - Comtech EF Data CDM-625 Installation And Operation Manual

CDM-625 Advanced Satellite Modem
Rear Panel Connector Pinouts
3.4.2

Alarms Connector, DB-15M

Table 3-11. Alarm Interface Connector Pin Assignments

Pin #
15
14
13
12
11
10
3.4.3

PMSI Connector, DB-9F

Table 3-12. PMSI (Pre-Mapped Symbol Interface) Connector Pin Assignments

Pin #
1
6
2
7
3
8
4
9
5
Unit alarms are provided on a 15-pin Type 'D' male connector. Refer
to Table 3-11 for pin assignments.
Signal Function
8 Rx Traffic (De-energized, Faulted)
Rx Traffic (Energized, No Fault)
7 RX Traffic
Tx Traffic (De-energized, Faulted)
6 Tx Traffic (Energized, No Fault)
Tx Traffic
5 Unit Fault (De-energized, Faulted)
Unit Fault (Energized, No Fault)
4 Unit Fault
Rx I Channel (Constellation monitor)
3 Rx Q Channel (Constellation monitor)
No Connection
2 AGC Voltage (Rx signal level, 0 to 10 volts)
9 EXT Carrier OFF
1 Ground
The PMSI (Pre-Mapped Symbol Interface) is a 9-pin Type 'D' female
connector. Refer to Table 3-12 for pin assignments.
Description
Ground
Spare – do not connect
Spare – do not connect
PMSI symbol clock – RS485 -
PMSI symbol clock – RS485 +
PMSI LSB – RS485 -
PMSI LSB – RS485 +
PMSI MSB – RS485 -
PMSI MSB – RS485 +
MN-0000036 (Ref MN/CDM625.IOM)
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
3–12
Revision 1
Name
Direction
-
-
-
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out