Comtech EF Data SLM-5650A - Manual (Page 65)

SLM-5650A Satellite Modem Revision 8
Rear Panel Connectors and Pinouts MN-SLM5650A
3–7
3.3.5 Interface Option Slot
You can install optional data interfaces into the unit’s interface option slot.
Read these chapters for more information about the optional data interfaces:
Network Processor Chapter 8
Gigabit Ethernet
Chapter 12
G.703 Chapter 13
LVDS Chapter 14
3.4 Utility Connectors
3.4.1 J1 Ext Ref (External Reference) (Type ‘TNC’)
The J1 External Reference uses a standard 50 Ω TNC female connector:
Ref Des / Name Description Direction
J1 Ext Ref External Reference 1, 5, 10 MHZ Input
3.4.2 J8 Alarms Connector (DB-9F)
This is a female Type ‘D’ 9-pin (DB-9F) connector that provides Form C contact
closures for alarm reporting. The three Form C summary fault contacts are
Modulator, Demodulator, and Common Equipment.
J8 Alarms Connector (DB-9F) Pinout
Pin # Signal Function Name
1 Tx Alarm common COM
6 Tx Alarm is not faulted NC
2 Tx Alarm is faulted NO
7 Unit Alarm common COM
3 Unit Alarm is not faulted NC
8 Unit Alarm is faulted NO
4 Rx Alarm common COM
9 Rx Alarm is not faulted NC
5 Rx Alarm is faulted NO