User manual BIAMP IWA250 VCA PACKAGES

[. . . ] ® ACCESSORY IWA250 VCA Packages Remote Control Options C +10V VCA-1 A single VCA Card for remote level control of an individual input or output. The VCA Card installs onto the IWA250 circuit board, and requires an external potentiometer to control. VCA card C +10V C +10V VCA-4 A package of four VCA Cards for remote level control of various inputs and/or outputs. [. . . ] The RP-L2 remote panel provides two 25k ohm linear taper potentiometers mounted on a grey 'decorator' style cover plate, with a single-gang 'cut-in' style PVC electrical back-box and pre-wired pigtails. VCA card C +10V VCA card RP-L2 Biamp Systems, 10074 S. W. Arctic Drive, Beaverton, Oregon 97005 U. S. A. (503) 641-7287 www. biamp. com ® C +10V IWA250 VCA Card Installation To install VCA Cards, first remove the jumper wires (between OUT and IN) on the respective channels/outputs of the mixer circuit board. Then install the two plastic support/guides (provided with each VCA Card) into the holes provided on the respective channels/outputs of the mixer circuit board (support/guides must be properly oriented to accept VCA Card). 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 (such as RP-L1 & RP-L2) may be wired up to 2000 feet away, using 2-conductor shielded cable. Controls may be any 5k~50k ohm linear taper potentiometer and/or switch to provide adjustment and/or muting of the level. Potentiometers are wired with high-side to "+10V", lowside 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. A combination of potentiometer and switch may be used, with the switch in line with either the "C" or "+10V" connection. [. . . ] (3. 175mm to 25. 4mm) knock-outs Mounting Cavity must be exactly 3. 6" high, 2. 25" wide, and at least 2. 75" deep. (91. 44mm H x 57. 15mm W x 69. 85mm D) flange RP-L1 & RP-L2 Block Diagram high (cw) w ccw cw white red green 25k linear wiper low (ccw) GND C +10V (503) 641-7287 www. biamp. com 18Dec06 [. . . ]