SNV-12 Operations Manual
3-59
3.12.6
SVM Site Voter Module
The SVM interfaces the SNV-12 with each voting site. The SVM‟s Digital Signal Processor
performs a variety of functions including Signal Quality measurement, pilot tone detection and
notching, speech detection, and RX audio delay. The configuration of these functions and
others are explained in this section. The figures below give locations of adjustment pots,
switches and jumpers for this module. The previous SVM-1 module is shown for reference.
TP3
SW2
8
1
SVM-2
TX SEL
VOTED
UNSQ
TX
FAULT
SW3
SW5
TX
LVL
PEAK
NORM
RX LVL ADJ
SELECT/NORM/DISABLE SWITCH
ACT LO
ACT HI
JP5 TB PIN 19
JP3
NORM
E&M
JP4
JP1
BALANCED
UNBAL
JP2
HI Z
LO Z
1
8
1
8
SW1
AUDIO DELAY
ADJ
COR
PTT
JP6
G
R
O
U
N
D
R
E
TU
R
N
E&M OUT
JP1, JP2, RX INPUT CONFIG
NO JP6 ON EARLY REVISION SVM-2
CONFIGURATION
RX
TX
LO Z
LVL
NOTE: NO JP1 ON SOME EARLIER REVISION MODULES
VOTED
FAULT
SELECT
DISABLE
UNSQUELCH
TX
SW1
BCD
SW2
1
8
1
LVL
JP1
8
SW3
SVM-1
HI Z
NORM
PEAK
Figure 3-9
SVM Module Internal Adjustments Locations
Summary of Contents for SNV-12
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