FSR IT-VCM User Manual

Operating Guide

INTELLI-TOOLS

IT- VCM

ASCII or Hardwire Controlled Line Level Volume Control Module

with Serial Loop Through

244 Bergen Blvd West Paterson NJ 07424 1-800-332-FSR1 http://www.fsrinc.com/

43934 LIT1248B

Warranty Policy

This product is warranted against failures due to defective parts or faulty workmanship for a
period of five years after delivery to the original owner. During this period, FSR will make any
necessary repairs or replace the unit without charge for parts or labor. Shipping charges to the
factory or repair station must be prepaid by the owner, return-shipping charges, via UPS / FedEx
ground, will be paid by FSR.

This warranty applies only to the original owner and is not transferable. In addition, it does not
apply to repairs done by other than the FSR factory or Authorized Repair Stations.

This warranty shall be cancelable by FSR at its sole discretion if the unit has been subjected to
physical abuse or has been modified in any way without written authorization from FSR. FSR’s
liability under this warranty is limited to repair or replacement of the defective unit.

FSR will not be responsible for incidental or consequential damages resulting from the use or
misuse of its products. Some states do not allow the exclusion of incidental or consequential
damages, so the above limitations may not apply to you. This warranty gives you specific legal
rights, and you may also have other rights which vary from state to state.

Warranty claims should be accompanied by a copy of the original purchase invoice showing the
purchase date (if a Warranty Registration Card was mailed in at the time of purchase, this is not
necessary). Before returning any equipment for repair, please read the important information on
service below.

SERVICE

Before returning any equipment for repair, please be sure that it is adequately packed and
cushioned against damage in shipment, and that it is insured. We suggest that you save the
original packaging and use it to ship the product for servicing. Also, please enclose a note giving
your name, address, phone number and a description of the problem.

NOTE: all equipment being returned for repair must have a Return authorization (RMA)
Number. To get a RMA Number, please call FSR Tech Support (973-785-4347). Please display
your RMA Number prominently on the front of all packages.

CONTACT INFORMATION
FSR Inc.
244 Bergen Blvd.
Woodland Park, NJ 07424
Phone: [phone]
Order Desk Fax: [phone]
E-mail: [e-mail]

Website: http://www.fsrinc.com

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Table of Contents

Warranty Policy .............................................................................................................................. 2

Table of Contents ............................................................................................................................ 3

Product Overview ........................................................................................................................... 4

IT-VCM Dimensions ...................................................................................................................... 5

Typical Applications ....................................................................................................................... 6

IT- VCM Operation ........................................................................................................................ 7

Dip switch Settings ......................................................................................................................... 8

Audio Pinout and Wiring ................................................................................................................ 9

Typical RS-232 Device Interconnections ..................................................................................... 10

IT-VCM Specifications ................................................................................................................. 11

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Product Overview

The IntelliTools IT-VCM is a stereo or mono line level volume control module. The IT-VCM
accepts a balanced or unbalanced stereo audio line level source and provides a balanced stereo

output. The module is able to sum the stereo inputs to mono.

The unit can be used in any application where remote control of the audio level is desired, such
as between the pre-out and main-in jacks of integrated amplifiers or receivers that were built
without remote control.

The IT-VCM responds to RS-232 commands, including volume up/down ramping, audio levels,
treble, balance, bass, muting and serial loop output port baud rate. The IT-VCM can provide
feedback on all the above as well as dip switch, pro/consumer, stereo/mono and pot enable
settings status.

Switches control only volume up/down and mute. They may be used concurrently with serial
control.

The potentiometer can be used for volume control only. In this mode, the volume up and volume
down button terminals as well as the Volume serial commands are disabled. (See IT-VCM
Operation for details)

The module delivers a 0-10V ramp output that can drive a bar graph indicator (not provided). A
mute output is also provided to drive an LED.

To control multiple sources, the IT-VCM modules can be "daisy-chained," This means that with
only one source you can change the volume level in the different rooms individually. Most RS­232 devices including FSR’s other IntelliTools modules can also be controlled.

Flanges on the base, along with the supplied screws, permit easy mounting to flat surfaces.

The versatility of the IntelliTools family is limited only by your imagination.

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