Volume Control Module
Crestron
ST-VC
“B” and “C” are driving MUTEB and MUTEC, respectively. When the muting
signal goes low, the muting circuit is deactivated and the volume and tone returns to
its original preset level.
NOTE:
MUTEALL is an override. All channels are muted when this signal is high.
When it is low, the channels follow the state of MUTEA, MUTEB, and MUTEC.
Each channel is equipped with protective relays that turn ON only after safe
conditions are sustained by the electronic circuitry. This feature protects the output
from “pops” caused by accidental power-down/power-up conditions to the ST-VC.
If the ST-VC is under program control and the power is cycled to the ST-VC, it
renews the volume, bass, and treble levels to the current program settings. The mute
status (per channel and the mute-all) are also restored.
Models
There are two Crestron Volume Control Module configurations available: ST-VC
and STI-VC. Configuration is based on the type of power availability. Use the ST-
VC with a 120V power supply and the STI-VC with a 220V power supply. For
purposes of this Operations Guide, the term ST-VC is used for either configuration.
Physical Description
The ST-VC, shown below, is housed in a black enclosure with silk-screened labels
on the front and rear panels. On the front of the unit there are eight LEDs for
indicating the unit’s current status. All connections are made on the back of the unit.
There are four rubber feet on the base of the unit for stability and to prevent
slippage.
ST-VC Physical Views
6.134 in
(15.580 cm)
1.700 in
(4.318 cm)
6.322 in
(16.058 cm)
6.940 in
(17.628 cm)
7.066 in
(17.948 cm)
1.500 in
(3.810 cm)
2
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Volume Control Module: ST-VC
Operations Guide - DOC. 5676A
