FSR IT-VCM Line Level Volume Control Module

Can be controlled in 3 different ways

The FSR 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. An input gain switch can be set to boost the low audio level of consumer equipment to professional levels. 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 can be controlled in three different ways; RS-232 commands, remote switches or remote potentiometer. The IT-VCM responds to simple ASCII RS-232 commands, providing control of volume, muting, balance, treble, bass, and serial loop out port baud rate. The IT-VCM can provide feedback on all of the above as well as pro/consumer; stereo/mono and pot enable settings.

Remote switch interface

A remote switch interface allows control of volume up, down, and mute functions via user provided external switches. Remote switches may be used concurrently with serial control. A remote pot interface is provided to allow volume control from a user provided potentiometer. In this mode, the volume up and volume down switch inputs and the Volume serial commands are disabled. The remote port may be used with the external mute switch. 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 and one RS-232 port 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.

The module is powered from a standard 12 VDC power supply (not provided but available from FSR). An integral mounting plate with four holes is provided to easily mount on FSR’s RK-2 rack mount, standard rack rails or standard two RU blank plates. The versatility of the IntelliTools family is limited only by your imagination.