Comtech EF Data CRS-120 - Manual (Page 30)

1:1 Redundancy Switch Revision 3
Connector Pinouts MN/CRS120.IOM
3–2
3.1.1 Alarm Interface Pin Assignment, J1A, J1B
The Alarm connector is a 15-Pin D female type, with threaded jack nuts. The pinout depends
upon whether the unit is in the Normal or Redundancy mode.
Alarm A (J1A) or B (J1B) Connector
1:1 Mode (In Modulator)
Pin # Description Name
J1A
Direction
J1B
Direction
8
15
7
Program Relay NC
Program Relay NO
Program Relay COM PR-NC
PR-NO
PR-COM I/O
I/O
I/O I/O
I/O
I/O
14
6
13
Rx Fault (De-energized = Open = Fault)
Tx Fault (De-energized = Open = Fault)
Unit Fault (De-energized = Open = Fault) Rx_-NO
Tx_-NO
Unit_-NO I/O
I/O
I/O I/O
I/O
I/O
5
12
4
Mod A/D
+12 VDC Output (160 ma)
AUX0 Out Enable to 1:N MODA2D
+12Vout
Tx_B_EN O
I
I
O
I
I
11
3
Rx I Channel (Constellation Monitor)
Rx Q Channel (Constellation Monitor) Rx-I
Rx-Q I
I I
I
10 RS-232 OH Channel Input Tx Aux_RS232 O I
2 RS-232 OH Channel Output Rx Aux_RS232 I O
9 Ext Carrier Off EXT-OFF O O
1 Ground GND Gnd Gnd
Note: Items shown (NC) are not connected inside the switch.
3.1.2 Online Status Connector Pin Assignments, J2
The Indicator connector is a 9-Pin D female type, with threaded jack nuts.
Pin # Description Direction
1 Ground I/O
2
3
4 B-NO (COM to NO, B is Online) I/O
5 A/B-COM I/O
6 A/B-NC (COM to NC, A is Online) I/O
7
8
9