ATI Technologies L200 Betriebs- und Wartungshandbuch - Seite 3

Blättern Sie online oder laden Sie pdf Betriebs- und Wartungshandbuch für Verstärken ATI Technologies L200 herunter. ATI Technologies L200 8 Seiten. Line/sum/mike amplifier

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LINE OUTPUT

Balanced output stages of the L200 utilize a unique active balanced output driver

IC, the Analog Devices SSM2142, that senses whether the connected load is

balanced and floating or is unbalanced due to either side being grounded. A

balanced output load will be driven with equal and antiphase levels on the HI and

LO output lines. An unbalanced (one side grounded) load will cause the driver IC

to shut off the signal output to the grounded side of the load and double the

output level applied to the other side, thus maintaining equal output to either type

of load. The output stage provides 6dB gain and will drive loads of 600 ohms and

higher. Nominal output is +4dBm with clipping at +22dBm (10Vrms) into 600 ohm

balanced loads for 18dB nominal headroom. Maximum output is reduced to

+20dBu (7.8Vrms) when driving an unbalanced load since the full output swing of

only one driver is available. This still provides a very comfortable 30dB of

headroom above the typical -10dBu nominal unbalanced signal.

POWER SUPPLY

The L200 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 permit several units to be daisy-chained with P/N20602-1

DC power cables to a single power supply. The WA100-1 and WA100-2

(230VAC) are 400mA supplies. The L200 draws 70mA. Any combination of

which add up to less than the supply rating can be powered by a single supply.

INSTALLATION

UNPACKING

Inspect the equipment. If there is any visible damage to the unit or to the box it

came in, contact the factory but do not return anything to ATI without prior

authorization and shipping instructions. It may be necessary to have the shipping

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. They need either their own separately ordered WA100

power supply or a DC cable, P/N20602-1 to share the supply of another.

Rack and desk mounting hardware may be packed in with the unit even though

ordered separately. Wall mount power supplies must be ordered separately but

may either be included with the unit or shipped in their own box.

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