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Summary of Contents for Sigma ADA-26A
- Page 1 ADA-26A AUDIO DISTRIBUTION AMPLIFIER INSTRUCTION MANUAL SIGMA ELECTRONICS, INC. P.O. Box 448 1027 COMMERCIAL AVENUE EAST PETERSBURG, PA 17520-0448 (717) 569-2681...
- Page 2 POWER: The ADA-26A operates from an AC power source of 120VAC or 230 VAC at line frequencies from 50 Hz to 60 Hz. The unit is supplied with a line cord terminated with a three-prong grounded plug. Internally the unit has bus voltages of +15Vdc and -15Vdc supplied by regulators U01 and U02 respectively.
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Page 3: Front Panel
The adjustments and indicators on the front panel (Figure 3) can be accessed through the slots provided in the frame in which the ADA-26A is installed. When mounted within the SS-2100 Series frames, it will be necessary to remove the front panel of the frame to gain access to these items. Factory settings of the module provide unity gain, maximum common mode rejection, and a bandwidth of 100 kHz. -
Page 4: Ac Voltage Selection
ADA-26A AUDIO DISTRIBUTION AMPLIFIER ADJUSTMENTS: Common Mode Rejection and Gain are both set for optimum performance by Sigma Electronics. AC Voltage Selection: The primary wiring of T1 must be in accordance with the line voltage applied to the unit. 120 VAC applications. The center-tapped wires must be soldered in the 120V position. Make sure the black wire is in the hole next to the BLK printing on the circuit board.
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