User manual BIAMP DRC 4 4

[. . . ] DRC 4+4 Digital Remote Control Operation Manual ® 6/15/98 Biamp Systems, 10074 S. W. Arctic Drive, Beaverton, Oregon 97005 U. S. A. (503) 641-7287 http://www. biamp. com an affiliate of Rauland-Borg Corp. DRC 4+4 TABLE OF CONTENTS Front Panel Features Rear Panel Features Controls Options Logic Outputs Configuration Software PC Control pg. 19 Specifications Warranty o four channels of internal VCA (voltage controlled amplifiers) o four control voltages for external VCAs (ADVANTAGE RCII) o four logic outputs for controlling external switching circuits o four "preset mixes", plus "current mix", stored in memory o "preset mixes" include all VCA & control voltage settings o remote control of volumes, mutes, presets, & logic outputs o remote control via infrared, wall-mount, and/or computer o built-in infrared receiver with infrared transmitters optional o wall-mount controls & remote infrared receivers optional o wall-mounts & receivers install up to 2000 feet from system o internal jumper strap allows infrared receiver to be bypassed o RS-232 serial port provides computer control interface o remote control from up to five locations is made possible o TRS 1/4" jacks provide input, output, & patching for VCAs o DC Out jack powers external VCA units (ADVANTAGE® RCII) o external VCAs can be "grouped" to a single control voltage o internal VCAs can be "strapped" in pairs for stereo control o +10 Volt standard allows interface with analog lighting systems o remote commands programmable for custom applications. [. . . ] Each logic output can be configured individually to any control button and to any response. In addition, special `Configuration Options" can be programmed so that Logic Outputs 1~4 "follow" the mute function on Channels 1~4, or that the status of the four Logic Outputs can be stored in memory as part of the Preset Mixes. The DRC 4+4 logic outputs are "open collector" outputs. Each logic output is an NPN transistor with the collector being the output and the emitter being ground (see diagram below). When a logic output is turned on, the transistor provides a path for DC current to flow. The logic outputs do not provide any voltage or current. They act only as switches (with a common ground return). To activate external relays, an external power supply must be used (see diagram below). The logic output transistors are rated up to a maximum of 24 VDC and 50 mA per output (24 volt relay coils maximum). However, +12 Volts DC is sufficient power for most applications. When using the logic outputs to control relays, protection diodes must be used to suppress high voltage transients that are generated when the relays turn off (see diagram below). Any of the 1N4004 family of diodes (1N4001, 1N4002, 1N4003, 1N4004, 1N4005, 1N4006, 1N4007, or equivalent) will provide proper protection. A 12 Volt Power Supply (#929-0011-00), 12 Volt Relays (#520-0064-00), and 1N4004 Diodes (#190-000309) are available from Biamp Systems. When a logic output goes on, the associated relay may be wired to perform on, off, or "A/B" switching functions. To use a logic "on" command to turn on (or activate) a device, wire across the "normally open" relay contacts, in series with the device (or control voltage source). To use a logic "on" command to turn off a device (or speaker), wire across the "normally closed" relay contacts, in series with the device (or control voltage source). To use a logic "on" command to select between "A" or "B" signals (inputs or outputs), wire one to the "normally closed" relay terminal and the other to the "normally open" relay terminal, with the common relay terminal providing the feed (input or output). 12345 6789 serial port & logic outputs logic output pin number logic #1 pin #1 logic #2 pin #6 logic #3 pin #8 pin #9 logic #4 pin #5 ground DRC 4+4 Pin #1 +12 Volts DC Power Supply - + 12V Relay Contacts Logic Output #1 1N4004 Diode Pin #5 normally closed common normally open Coil 7 CONFIGURATION All Configuration parameters are adjustable using the Windows 95 'PC Control Software' and serial cable provided with the DRC 4+4. The ® PC Control Software provides programs for various ADVANTAGE products, including the DRC 4+4. The DRC 4+4 program includes multiple control screens, which are described on the following pages. Factory default settings are shown on each screen. Once the software is started (and Comm Port Configuration is set), various screens are accessible through the drop-down menus at the top of the opening screen. The Mix screen appears whenever a DRC 4+4 file is opened. [. . . ] This application also shows the two DRC 4+4s controlling eight lighting dimmers and a video camera, possibly for a theatrical production. The eight Control Voltage Outputs (plus ground) from the DRC 4+4s are connected to +10VDC analog lighting dimmers. The eight Logic Outputs from the DRC 4+4s are connected to control terminals on a video camera, which select Pan/Tilt & Zoom presets (see Logic Outputs on page 7). The two DRC 4+4s provide volume & mute functions for the eight audio inputs, "volume & mute" functions for the eight lighting dimmers, Pan/Tilt & Zoom functions for the video camera, plus four preset mixes (scenes). [. . . ]