SNV-12 Voter Quick Start Guide
Page 2 of 2 Revision 1.1
Basic Installation Instructions
Refer to the SNV-12 manual for more complete instructions and explanations of alternate configurations and advanced features.
1)
Unpack
- Refer to Table 1-2 (Equipment and Accessories Supplied) and the Installation Section of the manual.
2)
Pilot Tone
- For 2175 Hz pilot tone (rather than 1950 Hz), change switch SW2-1 from "1" to "0" on each SVM module that uses 2175 Hz.
If a receiver’s hardwired COR (Unsquelch) output is used, connect to terminal 13 of the SVM-2 terminal block. Connect a ground to terminal 7.
3)
Transmitter Keying
-
If a relay contact closure to ground is needed, change JP4 of SVM-2 #1 to pins 2&3 “E&M.”
If EIA keying tones are used to key the transmitter, change CIM module switch SW2-1,2,3 from "0,0,0" to "1,1,1."
4)
Console Keying
-
If EIA keying tones will be sent from the console to the voter, change CIM module switch SW2-6 from "0" to "1."
5)
TX / RX Site Connections
- The transmit site must be connected to SVM-2 #1, which resides in the left most slot as viewed from the front of
the voter. SVM-2 #1 interfaces its transmitter and receiver via rear panel terminal block TB1:
Audio from receiver:
use TB1 terminals 1(+) & 2
Audio to transmitter:
use TB1 terminals 4(+) & 5
PTT output to transmitter: use TB1 terminal 18 (not needed if EIA keying tone output is used)
Ground to transmitter:
use TB1 terminal 20
6)
RX Site Connections
- Connect the inputs to the SVM modules via the rear panel TB2 through TB12:
Audio from receiver site 2: use TB2 terminals 1(+) & 2
Audio from receiver site 3: use TB3 terminals 1(+) & 2
•
•
•
Audio from receiver site 12: use TB12 terminals 1(+) & 2
7)
Console Connections
- The console interfaces the SNV-12 CIM module via rear panel TB13:
Console TX audio to Voter: use TB13 terminals 1 & 2(+)
Voted audio to the console: use TB13 terminals 4 & 5(+)
PTT input to Voter:
use TB13 terminal 7 (not needed if EIA keying tone input is used)
Ground to Voter:
use TB13 terminal 18
8)
Connect Power
- 110 VAC or 12 VDC. When power is applied, the unit will self-test. The CPM-1 Fault LED will flash until the unit is fully
ready to begin operation. The unit may also be set for 220 VAC; see the Installation Section of the manual for details.
9)
Adjust Audio Levels -
RX audio at each SVM must be adjusted as detailed in the Installation Section of the manual. TX audio must be set for
proper transmitter operation. If a console is used, its audio to the voter’s CIM console TX audio input must also be adjusted as detailed, and the
proper Voted Audio output level set from the SNV-12 to the console.
