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Summary of Contents for ATI Technologies SUM100
- Page 1 SUM100 LINE/SUM/LINE AMPLIFIER OPERATING AND MAINTENANCE MANUAL © Copyright 1997-2005, Audio Technologies Incorporated - Printed in USA Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Voice 856-719-9900 | Fax 856-719-9903 | www. audio.com...
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Page 2: Summing Amplifier
The inputs provide balanced 40Kohm bridging impedance for line levels up to +24dBm. The high input impedance allows the SUM100 inputs to also bridge - 10dBu (hi-fi, RCA plug) lines without loading. Front panel, screwdriver adjust, full range gain controls provide 26dB gain at full clockwise rotation, unity gain at twelve o’clock and a smooth audio taper to full... -
Page 3: Line Output
-10dBu nominal unbalanced signal. POWER SUPPLY The SUM100 requires 22 to 30VDC and are designed to share a common external 24VDC "Wall Wart" type power supply. A pair of loop-thru DC connectors on the rear of each module permits several units to be daisy-chained with P/N20602-1 DC power cables to a single power supply. - Page 4 company inspect the unit and the box at your location. Count the pieces! Don't throw out the boxes and packing material until you are sure you have everything that is coming to you. The amplifiers need either their own separately ordered WA100 power supply or a DC cable, P/N20602-1 to share the supply of another amplifier.
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Page 5: Power Distribution
shielded and free of ground loops. It may even be necessary to add shielding to the DC input leads to avoid RF pickup. POWER DISTRIBUTION Multiple amplifiers sharing a single wall-wart power supply should be looped through each other using the DC interconnect cables P/N20602-1. Hum and noise performance of the units can be degraded by poor DC ground connections between units sharing a common supply, use of the recommended rack and desk mounting kits will assure a good ground connection between units by firmly... - Page 6 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.
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Page 7: Performance Specifications
PERFORMANCE SPECIFICATIONS Gain: 28dB maximum, 0dB at 12 o’clock pot position Nominal Levels: +4dBu in, +4dBm out to 600 ohm balanced load Peak Levels: +24dBu in, +22 dBm out to 600 ohm balanced load Noise 20kHz B.W.: -90dBm maximum output Harmonic Dist.: .02% Max at Peak Level 20Hz to 20 kHz .005% max at Nominal Level...
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