EQ281/8 & EQ282/8 Digitally Controlled 1/3-Octave Equalizers operation manual ® 6/12/98 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.
EQ281/8 & EQ282/8 TABLE OF CONTENTS INTRODUCTION Front Panel pg. 2 Rear Panel pg. 3 Setup Logic Inputs RS-232 Control Applications pgs. 4~6 pg. 7 ® ADVANTAGE EQ281/8 & EQ282/8 provide one or two channels of digitally controlled 1/3-octave equalization in a single rack-space unit. Input levels and 28 filter bands, as well as high-pass & low-pass filters, are all adjusted via computer. Eight presets (per channel) are recalled via contact-closures, thirdparty controllers, or computer.
FRONT PANEL ADVANTAGE EQ 281/8 Digitally Controlled EQ preset peak preset peak bypass peak on ADVANTAGE EQ 282/8 Digitally Controlled EQ preset Channel 1 Preset: This seven segment LED display indicates which preset is currently selected. There are eight presets available (per channel), which can be recalled from non-volatile memory via RS-232 or Logic Input control. Each preset stores settings for input level, 28 filter bands, a high-pass filter, and a low-pass filter.
REAR PANEL ~ output 32 16 8 4 2 1 15 watts class 2 wiring DC out device # serial port link port ~ baud rate an affiliate of Rauland-Borg Corp. logic inputs MADE IN U.S.A. device # input serial port link port baud rate BIAMP SYSTEMS output input Portland, Oregon last 2400 9600 19200 32 16 8 4 2 1 DC out BIAMP SYSTEMS Portland, Oregon output 27V 50/60 Hz 15 watts class 2 wiring input last 2400 9600 19200 27V 50/60 Hz an affiliate of Rauland-Borg Corp.
SETUP ® All equalizer parameters are adjustable using the Windows 95 'PC Control Software' and serial cable provided with the unit. The PC ® Control Software provides programs for the EQ281/8 & EQ282/8, as well as other ADVANTAGE products. The equalizer programs include three different control screens (Main, Button Definition, & Configuration Options), which are described on the following pages.
SETUP BUTTON DEFINITION SCREEN The Button Definition screen is used to assign specific ‘recall preset actions’ to the Logic Inputs (and remote control buttons). Logic Inputs allow remote control of preset selection via external circuits, such as switches, contact-closures, active driver circuits, and/or ‘opencollector’ logic outputs (see Logic Inputs on pg. 7). From the factory, Logic Inputs 1~8 are programmed to recall presets 1~8 respectively (Channel 1 on an EQ282/8).
SETUP CONFIGURATION OPTIONS SCREEN The Configuration Options screen is used to select options which customize the operation of the equalizer. At the top of the Configuration Options screen, the Serial Number and Firmware Version of the equalizer will be displayed. The PC Control Software can operate ‘off-line’ (with no product connected) by opening a ‘new’ file for the desired product. The Serial Number and Firmware Version are not displayed for ‘new’ (‘off-line’) files.
LOGIC INPUTS Sixteen Logic Inputs are available on a rear panel 25-pin Sub-D (female) connector. Logic Inputs allow remote control of preset selection via external circuits, such as switches, contact-closures, active driver circuits, and/or ‘open-collector’ logic outputs. From the factory, Logic Inputs 1~8 are programmed to recall presets 1~8 respectively (Channel 1 on an EQ282/8). On an EQ282/8, Logic Inputs 9~16 are programmed to recall presets 1~8 for Channel 2.
RS-232 CONTROL The EQ281/8 & EQ282/8 have an RS-232 compatible Serial Port, which allows them to be controlled by a computer (see Rear Panel: Serial Port on pg. 3). In addition to the PC Control Software, the EQ281/8 & EQ282/8 offer two other methods of computer control. ® Control Button Emulation: This method allows the computer to emulate the operation of an ADVANTAGE infrared or wall-mount pushbutton remote control.
RS-232 CONTROL Serial Port: The 9-pin Sub-D (male) connector on the equalizer rear panel provides the RS-232 compatible serial interface signals used for computer control. The Serial Port transmits serial data on pin 3 (TxD), receives serial data on pin 2 (RxD), and provides a ground on Pin 5. The Data Terminal Ready (DTR) & Request To Send (RTS) output signals are connected to a positive voltage source (through a resistor) and are always asserted when the equalizer power is on.
APPLICATIONS ADVANTAGE DRC 4+4 ® ADVANTAGE DRC 4+4 remote 2 Digital Remote Control remote 3 remote 4 VCA control voltage outputs MADE IN U.S.A. DC out ADVANTAGE RCII patch serial port & logic outputs gnd IR2 IR3 gnd IR2 IR3 gnd IR2 IR3 gnd 8 7 6 in/out 4 5 patch in/out 3 patch 2 in/out patch 1 in/out ® VCA control voltage inputs ADVANTAGE RCII Remote Control MADE IN U.S.A.
APPLICATIONS ® ADVANTAGE SPM 522D BIAMP SYSTEMS Portland, Oregon outputs L R R an affiliate of Rauland-Borg Corp.
SPECIFICATIONS & BLOCK DIAGRAM 31.5Hz~16kHz Filter Frequencies (ISO centers): +0/-0.5dB Frequency Response (20Hz~20kHz @ +4dBu): ±12dB in 1dB steps or THD + Noise (20Hz~20kHz @ +4dBu): <0.01% Intermodulation Distortion (SMPTE): <0.01% Hum & Noise (20Hz~20kHz @ unity, filters flat): -88dBu Input Gain Range (programmable): Dynamic Range (20Hz~20kHz): 109dB Power Requirements: 120/240VAC >10k ohms Power Consumption: 15 watts max.
WARRANTY BIAMP SYSTEMS IS PLEASED TO EXTEND THE FOLLOWING 5-YEAR LIMITED WARRANTY TO THE ORIGINAL PURCHASER OF THE PROFESSIONAL SOUND EQUIPMENT DESCRIBED IN THIS MANUAL. BIAMP Systems expressly warrants this product to be free from defects in material and workmanship for a period of 5 YEARS from the date of purchase as a new product from an authorized BIAMP Systems dealer under the following conditions. 5.
