FSR IT-VCM - Manual (Page 4)

4
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 RS-
232 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.