This document was prepared and written by the Technical Documentation department at: Crestron Electronics, Inc.
Crestron ST-VC Volume Control Module Contents Volume Control Module: ST-VC 1 Description................................................................................................................................. 1 Functional Description ................................................................................................ 1 Models......................................................................................................................... 2 Physical Description................
Crestron ST-VC Volume Control Module Volume Control Module: ST-VC Description Functional Description The Volume Control Module is a digitally controlled 3-channel audio attenuator. Each channel has independent settings for volume, treble, bass, and mute. Transitions between any attenuation settings are “pop” free. The module is ideally suited to provide full audio control for systems without an IR-controlled integrated receiver. Choose a mixer, preamp, and amplifier.
Crestron ST-VC Volume Control Module “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.
Crestron ST-VC Volume Control Module ST-VC Ports A number of ports are provided on the back of the ST-VC. Each has a silk-screened label. Refer to illustration and descriptions below. ST-VC Ports 12 VDC .5 A NOTE: An external power pack is not supplied with the ST-VC. When the ST-VC is used as part of the Cresnet system, there is no need for a power pack. The unit gets its power from the network connection. A power pack is only necessary if the STVC is used with the STS system or as a stand-alone device.
Volume Control Module Crestron ST-VC If power pack is attached when module is part of the Cresnet system, power is drawn from the power pack. The module does not load the network power, but the network power remains chained. G (Chassis Ground) Use this chassis GND screw to ground the unit to the amplifier and audio source common GND. Channels A - C Connect these balance/unbalanced input (IN) ports to the AUDIO OUTPUT of any A/V equipment that needs volume, treble, and bass control.
Crestron ST-VC Volume Control Module Leading Specifications of the ST-VC SPECIFICATION Power Requirements DETAILS 12VDC external power pack or 24VDC, 0.25A, 6W - network Default NET ID 10 Crestron Application BuilderTM Crestron Application Builder TM TM Version 1.0.9 or later1 & 2 Templates ® Version 1.4 or later2 SIMPL Windows Crestron Database Version 1.40.07 or later2 Version 12.1.4 or later for SmarTouch Wizard support or 12.1.
Crestron ST-VC Volume Control Module Tone Specifications of the ST-VC (Per Channel) SPECIFICATION DETAILS Flatness (8 to 60 KHz flat mode) +/- 0.2 dB Bass Gain Range (100 Hz) +/- 12 dB Bass Step Size (100 Hz) 2 dB Treble Gain Range (10 KHz) Treble Step Size (10 KHz) +/- 12 dB 2 dB As of the date of manufacture, the Volume Control Module has been tested and found to comply with specifications for CE marking and Australian Compliance Mark. NOTE: These devices comply with part 15 of the FCC rules.
Crestron ST-VC Volume Control Module Cresnet System Hookup Connections for ST-VC OPTIONAL POWER PACK (500 mA) (1000 mA for STI-VC) AUDIO OUT AMPLIFIER & AUDIO SOURCE COMMON GND NOTE: USE ST-CNB (SOLD SEPARATELY) TO CONNECT ST-VC TO CRESNET SYSTEM. A/V EQUIPMENT INPUT CRESNET SYSTEM AMPLIFIER DAISY CHAIN TO EXPAND Identity Code Every equipment and user interface within the network requires a unique identity code (NET ID). These codes are recognized by a two-digit hexadecimal number from 03 to FE.
Crestron ST-VC Volume Control Module 6. Click Set ID to initiate the change. This will display the "ID command has been sent" window. 7. In the "Command Complete" window, click OK. 8. In the Current Network Devices text window, verify the new NET ID code. 9. In the "Set Network ID" window, click Close. NOTE: The new NET ID code may also be verified by selecting Diagnostic | Report Network Devices in the Viewport (alternately, select F4). 10.
Crestron ST-VC Volume Control Module symbol and defines its inputs, and the final section provides the location of example program. NOTE: The following descriptions assume that the reader has knowledge of SIMPL Windows. If not, refer to the extensive help information provided with the software. Configure ST-VC Program To create a program with a ST-VC, refer to the table below for initial configuration information.
Crestron ST-VC Volume Control Module Detail View of the ST-VC Symbol in SIMPL Windows' Programming Manager ST-VC Symbol Input Descriptions INPUT(S) FUNCTION(S) Each channel (A through C) has a corresponding muting relay with 104 dB attenuation. When any of these digital inputs goes high, the muting circuit provides a 104 dB drop from the current volume level. When the signal goes low, the volume setting returns to its previous level. As long as this digital signal remains high, all channels are muted.
Crestron ST-VC Volume Control Module Example Program An example program can be obtained from the Downloads section of the Crestron website (www.crestron.com). Search for ST-VC.SMW. New users are required to register in order to obtain access to the FTP site. This example program illustrates control over a ST-VC network device in a CNMSX-PRO system. In the example, channels A and B are tied together to provide control over a stereo source that has a left and right channel.
Crestron ST-VC Volume Control Module Further Inquiries If after reviewing this Operations Guide for the Volume Control Module, you can not locate specific information or have questions, please take advantage of Crestron's award winning customer service team in your area. Dial one of the following numbers. • In the US and Canada, call Crestron’s corporate headquarters at 1-888-CRESTRON [1-888-273-7876] or 1-201-767-3400. • In Europe, call Crestron International at +32-15-50-99-50.
Crestron ST-VC Volume Control Module Return and Warranty Policies Merchandise Returns / Repair Service 1. No merchandise may be returned for credit, exchange, or service without prior authorization from CRESTRON. To obtain warranty service for CRESTRON products, contact the factory and request an RMA (Return Merchandise Authorization) number. Enclose a note specifying the nature of the problem, name and phone number of contact person, RMA number, and return address. 2.
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Crestron Electronics, Inc. 15 Volvo Drive Rockleigh, NJ 07647 Tel: 888.CRESTRON Fax: 201.767.7576 www.crestron.com Operations Guide – DOC. 5676A 02.02 Specifications subject to change without notice.
