Table of Contents
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Pin Number Function
1.
Ground
2.
FMV Control
3.
Composite Out (sample of stereo generator output)
4.
FSK In (Normally high; pull low to shift carrier frequency ap-
proximately 7.5 KHz. Connect to open collector or relay contacts
of user-supplied FSK keyer.)
5.
/Auto Carrier Off (Pull low to enable automatic turnoff of carrier
with program failure.)
6.
Meter Battery (Unregulated DC voltage; 5 VDC=50 VDC)
7.
Meter RF Watts (1 VDC = 100 Watts)
8.
Meter PA Volts (5 VDC = 50VDC)
9.
Remote Raise (A momentary switch, holding this pin low will slowly raise the RF output)
10.
Remote Lower (A momentary switch, holding this pin low will slowly lower the RF output)
11.
Remote SWR (A buffered metering output with a calculated reading of standing wave ratio in
VDC.)
12.
External ALC Control
13.
No Connection
14.
/Ext. Enable (Pull low to disable the internal stereo generator and enable External Composite
Input.)
15.
38 KHz Out (From stereo generator for power supply synchronization. For transmitter
equipped with receiver option, this pin becomes the right audio output for an 8-
ohm monitor speaker. 38 KHz is disabled.)
16.
ALC
17.
/Carrier Off ( Pull low to turn carrier off)
18.
Fault Summary ( line goes high if any fault light is activated.)
19.
Meter PA Temperature (5 VDC=100 degrees C.)
20.
Meter PA Current (1VDC=10 DC Amperes.)
21.
Front Panel Voltmeter Input.
22.
No Connection.
23.
RDS RX
24.
RDS TX
25.
Ground
Installation
2-17
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