User manual BIAMP ANC22

[. . . ] For connection to unbalanced equalizer/amplifier inputs, wire high to (+) and ground to ( ), leaving (-) unconnected. The Output has an additional 6dB of gain when used in a balanced fashion. ý Input: These plug-in barrier strip terminals are for connection to the output of a program signal source. The Input accepts a balanced stereo line-level program signal. The ANC22 works equally well with a mono program signal connected to either the left or right Input/Output. [. . . ] Sense Level & Indicators: This screwdriver adjustable control determines the appropriate sense input level. Initially, this control should be increased only until the Low Indicator goes off. Once Sense Level has been set, press the Setup Button and the Max Indicator will light (see Max Level below). NOTE: Max Level settings may cause the Peak Indicator to light. If so, decrease Sense Level until the Peak Indicator goes off, then repeat the setup procedure to store the new settings in non-volatile memory. Once setup is completed, do not disturb the Sense Level control. Max Level: This screwdriver adjustable control determines the maximum output gain of the ANC22 (for periods of high ambient noise). Adjust Max Level during Setup Mode, while the Max Indicator is lit. Set the Max Level control for the program volume which will be appropriate when backgound noise is the `loudest'. Max Level has a range from the Min Level setting to +18dB. Once Max Level has been set, press the Setup Button and the Time Indicator will light (see Sample Time below). NOTE: If Max Level 3 settings cause the Peak Indicator to light, decrease Sense Level until the Peak Indicator goes off, then repeat the setup procedure to store the new settings in non-volatile memory Sample Time: This screwdriver adjustable control determines the length of time the ANC22 uses to sample noise levels at the Sense Input. Sample Time affects how accurately the ANC22 will calculate an `average' noise level, as well as how quickly it will respond with a program volume adjustment. Lower settings allow less sampling time, but offer a quicker response time. This is good for applications (such as subway terminals) where the ambient noise level may change drastically within a short period of time. Higher settings provide a longer sampling time, and a longer response time. This is good for applications (such as restaurants) where the ambient noise level changes gradually. A setting of `10 sec' is a good starting point for most applications. Once Sample Time has been set, press the Setup Button and the Ratio Indicator will light (see Gain Ratio below). NOTE: During setup of Sample Time, the Bypass Indicator functions as a Rate Indicator, and will flash each time a complete sampling period has elapsed (see Bypass Switch & Indicator below). Gain Ratio: This screwdriver adjustable control determines how much the ANC22 will increase program volume, relative to a given increase in ambient noise. A minimum setting (`1:2') produces a 1dB increase in program volume for every 2dB increase in `average' ambient noise level. [. . . ] THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED. BIAMP SYSTEMS EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REMEDIES SET FORTH HEREIN SHALL BE THE PURCHASER'S SOLE AND EXCLUSIVE REMEDIES WITH RESPECT TO ANY DEFECTIVE PRODUCT. THE AGENTS, EMPLOYEES, DISTRIBUTORS, AND DEALERS OF BIAMP SYSTEMS ARE NOT AUTHORIZED TO MODIFY THIS WARRANTY OR TO MAKE ADDITIONAL WARRANTIES BINDING ON BIAMP SYSTEMS. [. . . ]