Comtech EF Data SMS-7000 - Manual (Page 57)

SMS-7000 Modem Protection Switch Installation
Rev. 3 2–23
2.6.1.2 Modem Remote (J2)
The modem remote interface is a 2-wire EIA-485, 9600, or 19200 baud. The connector is
a 9-pin female D, with the pinouts as shown in Table 2-5.
Table 2-5. Modem Remote EIA-485 Connector (J2)
Pin # Signal Name
1 GND
2 Unused
3 Unused
4 +RX/TX
5 -RX/TX
6 Unused
7 Unused
8 +RX/TX
9 -RX/TX
2.6.1.3 Switch Faults (J3)
Switch fault outputs on this connector are provided by Form C relay contacts for status
monitoring.
• Controller Fault is indicated by a Common-to-Normally Closed contact closure,
activated if the controller loses power.
• M:N faults are indicated by a Common-to-Normally Open contact closure,
activated in the event of any fault registered in the Fault Alarm Menus.
Maximum relay contact current is 1A at 30 VDC.
The connector is a 9-pin female D with the pinouts as shown in Table 2-6.
Table 2-6. Switch Faults Connector (J3)
Pin # Signal Name
1 Controller Fault NO
2 Controller Fault COM
3 Controller Fault NC
4 M:N Fault NO
5 M:N Fault COM
6 M:N Fault NC
7 Spare 2 NO
8 Spare 2 COM
9 Spare 2 NC