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RCF6001 Satellite Terminal Installation

TM082 - Rev. 1.0

Page 2-5

J3 – RS232 Terminal Port

Table 2-2.

J3 - RS232 Terminal Port - 9-Pin Female ‘D’

Pin No. Signal Description Direction

3 TxD Transmit Data Output

2 RxD Receive Data Input

5 Gnd Ground -----

J5 – Alarm Connection

The modem has two form-C dry contact alarm relays onboard and an alarm connector located on the

rear panel, the 9-pin male “D” sub connector J6.

The two relays are designated Modulator Alarm and Demodulator Alarm. Non-Alarm is defined as the

powered state of the relay. Thus, if there is a Modulator Alarm and/or Demodulator Alarm, the pins will

be connected as follows:

Alarm No Alarm

Modulator

Pins 2 and 3 Shorted Pins 1 and 2 Shorted

Demodulator

Pins 8 and 9 Shorted Pin 7 and 8 Shorted

The pin definitions for J5 are shown in Table 2-3 below. Note that the NC and NO (Normally Closed

and Normally Open) nomenclature applies to non-energized relays.

Table 2–3.

J5 - Alarm Connector – 9-Pin Male ‘D’ Sub Connector

J6 Pin Number Connection

1 Mod Alarm Relay A NO on Alarm

2 Mod Alarm Relay A Common

3 Mod Alarm Relay A NC on Alarm

4 -----

5 AGC Voltage Output

6 Gnd

7 Demod Alarm Relay B NO on Alarm

8 Demod Alarm Relay B Common

9 Demod Alarm Relay B NC on Alarm

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 77 78

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