Utility Connectors; J1 Ext Ref (External Reference) (Type 'Tnc'); J8 Alarms Connector (Db-9F); J9 Auxiliary Connector (Hd-15F) - Comtech EF Data SLM-5650B Installation And Operation Manual

3.4

Utility Connectors

3.4.1 J1 Ext Ref (External Reference) (Type 'TNC')

Ref Des / Name
J1 Ext Ref

3.4.2 J8 Alarms Connector (DB-9F)

Pin #
7 Tx Alarm common
3 Tx Alarm is not faulted
8 Tx Alarm is faulted
1 Unit Alarm common
6 Unit Alarm is not faulted
2 Unit Alarm is faulted
4 Rx Alarm common
9 Rx Alarm is not faulted
5 Rx Alarm is faulted

3.4.3 J9 Auxiliary Connector (HD-15F)

Rear Panel Connectors and Pinouts
The J1 External Reference uses a standard 50 Ω TNC female connector:

Table 3-7. J1 External Reference (Type 'TNC')

Description
External Reference 1, 5, 10 MHZ
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.

Table 3-8. J8 Alarms Connector (DB-9F) Pinout

Signal Function
This is a female type 'HD' 15-pin (HD-15F) connector that provides TTL open
collector faults for the modulator and demodulator; a TTL input for external
transmit carrier mute; an Analog demodulator Q and I constellation monitor; and a
programmable DC voltage monitor for the demodulators AGC.
3–9
SLM-5650B Satellite Modem
Revision 2
Direction
Input
Name
COM
NO
NC
COM
NO
NC
COM
NO
NC
MN-SLM-5650B