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Jaguar Audio
4.6 64X32 Digital Audio Matrix Card Continued:
Input Equalizers
U1 thru U4 and U41 thru U44 provide adequate input cable equalization
for matrix A inputs dependent upon the quality of the input cables. U21
thru U24 and U61 thru U64 provide adequate cable equalization for matrix
B inputs dependent upon the quality of the input cables. For input cable
runs of 5000 feet or longer please verify the quality of the audio input
cables.
Output Drivers
U5 thru U20 and U45 thru U60 are used to drive the outputs for matrix A.
U25 thru U40 and U65 thru U80 are used to drive the outputs for matrix B.
Power Regulators
U113 is a switching regulator that creates +5.0 volts @ 3 amps to power
the crosspoint matrix, input, control, output ICs.
U115 provides power to the backplane for the chassis fan. Q4 and Q5
provide ±5.6 volts for U101 and input sync buffers Q1 and Q2.
U129 monitors all primary circuit card voltages for out of voltage range
conditions (±15%). If a fault is sensed CR11 will light and the controller will
report the error condition. CR9 indicates that power is applied to the
64X32 Digital Audio Matrix Card.
4.7 Standard 64X64 Audio Output Card
The Standard Audio Output Card provides passive distribution of the au-
dio output signals from the 15-pin audio output connectors located on the
Backplane to the 3-pin audio output connectors located on the Standard
Audio Output Card. See Schematic, Standard Audio Output Card, page
6.55.
3/98
P/N 81905903730
Functional
Section 4
4
F UNCTIONAL
DESC RIPTI ON
page 4.7
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