User manual BIAMP IWA250 VCA

[. . . ] IWA250 Remote Control VCA Card Installation CAUTION: These installation instructions are for use by qualified service personnel only. [. . . ] Once the support/guides are in place, slide the VCA Cards into the support/guides, making sure all pins on the VCA card slide fully into the corresponding holes in the mixer circuit board. Once the VCA Cards have been installed, remote controls may be wired up to 2000 feet away, using 2-conductor shielded cable. Controls may be any 5k~50k linear taper potentiometer and/or switch to provide adjustment and/or muting of the level. Potentiometers are wired with high-side to "+10V", low-side to " ", and wiper to "C". The wiper of one potentiometer may be wired to the "C" terminal on multiple VCA Cards, allowing control of a group of signals from a single potentiometer. Switches simply connect (or disconnect) "+10V" to "C", and do not require a ground (` ') connection. [. . . ] Gemini Drive | Beaverton, OR | 97008 | USA | +1. 503. 641. 7287 | www. biamp. com CH 8 -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN CH 7 CH 6 CH 5 CH 4 -12V +12V +10V GND OUT IN CH 3 -12V +12V +10V GND OUT IN CH 2 CH 1 -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN MAX MIN Mixer Circuit Board OVERRIDE SENSITIVITY MAIN AUX 5Jul06 585. 9170. 90A IN OUT GND +10V +12V -12V IN OUT GND +10V +12V -12V [. . . ]