SNV-12 Voter Quick Start Guide
Page 1 of 2 Revision 1.1
This Quick Start Guide describes a typical SNV-12 installation with multiple receivers, a single transmitter, and a dispatch console. The SNV-12
voter can be set up for a wide variety of other system configurations; please refer to the manual for advanced capabilities and options.
The SNV-12 is configured and adjusted at the factory for the following;
•
FM receivers (use line audio, not discriminator audio)
•
1950 Hz pilot tone from all receivers (the PTG-10 Pilot Tone Generator is available from Raytheon)
•
E&M Console keying input to voter (relay closure to ground or low level logic input signal activates the voter’s PTT input)
•
Hard-wired transmitter keying output (open collector transistor pulls transmitter PTT low; relay contact closure optional – see page 2)
•
Full Duplex (each SVM module can simultaneously transmit and receive)
•
Repeat Mode is enabled, so voted audio is retransmitted via SVM module #1
•
Console Priority is selected, so transmissions from the dispatcher will preempt retransmission of voted audio
•
All audio is 600 ohm balanced; input/output audio levels are initially set to -10dBm
PTT
System
TB-1
RX Audio / Pilot Tone
Receiver #1
TB-13
Receiver #2
Receiver #3
Receiver #N
1
2
4
5
18
TX Audio
RX Audio / Pilot Tone
RX Audio / Pilot Tone
1
2
4
5
7
1
2
1
2
2
1
TB-2
TB-3
TB-N
Console TX Audio
Voted Audio
PTT
Console
+
_
+
_
+
_
+
_
+
_
+
_
_
+
SNV-12
Site #1
Site #2
Site #3
Site #N
RX Audio / Pilot Tone
Ground
18
20
Ground
Transmitter
