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E-Series Network / Apr 2007
H A R D W A R E
Analog Output Card (AO-NC4)
Overview
Each Analog Output card provides 8 physical monaural output channels.
These output channels are configured in software to be 4 stereo pairs.
An Audio Configuration form in the supplied XPoint software allows the user
to set attributes for the output channels, including signal name, location, and
Stereo/Mono.
Each output card listens for connection commands from the CPU and then
uses this information to connect the appropriate sources to their selected
output channels. The selected audio data is fed to 24 bit, two-channel digital-
to-analog converters. The D-A converter outputs are buffered by integrated
differential output drivers.
Analog Output Interface
Each balanced unity gain output will drive loads of 600 Ohm or above and
behaves much like a transformer in that either side of the balanced output may
be grounded. The analog outputs are direct coupled with an output impedance
of 50 Ohm and a nominal output signal level of +4dBu for an analog input
signal of +4dBu (-20dBFs digital) .
Internal Programming Options
There are no internal programming options on the AO-NC4 card.
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