ATI Technologies L200 운영 및 유지보수 매뉴얼 - 페이지 5

{카테고리_이름} ATI Technologies L200에 대한 운영 및 유지보수 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. ATI Technologies L200 8 페이지. Line/sum/mike amplifier

OPTIONS

230VAC

The WA100-2 tabletop power supply accepts 230VAC/50-60Hz via an IEC320

male 3 pin AC input connector. User supplies a matching line cord for the local

power system.

Battery Operation

Alkaline battery packs (BBU100-1) and 24VDC converters for operation from 12V

belt pack or automotive batteries (DC100-1) power modules are available.

MAINTENANCE

There is no routine maintenance required by your amplifier. If you have a

problem, check panel LED indicators to assure that the units have DC power,

eliminate by substitution input and output cables, connectors, downstream

devices, DC interconnect cables and Wall Wart power supplies.

POWER SUPPLY LEVELS

The recommended loaded DC input voltage range is 22VDC minimum to 32VDC

maximum over the full range of AC line voltage tolerances. The audio circuits

continue to work with reduced headroom below 22VDC. Momentary surges up to

36VDC will cause some increased internal heating, but above 36VDC may cause

IC failure.

OPERATING POINTS

An internal reference voltage equal to 1/2 the supply voltage is generated. All

audio stage IC inputs and outputs should show a DC level equal to this voltage

when measured with a high impedance meter. Audio inputs and outputs are

capacitor coupled and ground referenced.

MODIFICATIONS

If more gain is required for a particular application increase the values of R25

(left) and R34 (right). 20K ohms adds 6dB, 30K ohms adds 10dB, 62K adds

16dB, 100K adds 20dB. A corresponding decrease in the input clipping level will

result. SUMMING AMPLIFIER if you wish to sum the inputs, remove the cover

and find the jumper plug J4. Move J4 from the parked position so that it jumps

both terminal pins. Either input signal will now appear at both outputs at a level

as set by the individual input gain control. The summing network causes 6dB of

loss however the two inputs sum to +3dB (+6dB for in phase sine waves).

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