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4.6 Motherboard
The motherboard is the large board in the upper chassis interconnecting the audio proces-
sor/stereo generator board or the optional receiver module or the Omnia digital audio proc-
essor to the RF exciter and metering circuits. The motherboard provides the interconnec-
tions for this boards, eliminating the need for a wiring harness, and provides input/output
filtering. The RF exciter and Metering circuits are an integral part of the motherboard and
are no longer separate boards as in past transmitter designs.
Also contained on the motherboard is the +5.00 volt reference and the composite drive Op
amp and its associated circuitry.
The motherboard has configuration jumpers associated with different options that can be
added at the time of order or at a later time as an upgrade. The motherboard configuration
chart for these jumpers can be found on the following page.
Configuration
Jumpers
Illustration 4–4 Configuration Jumpers
4-8
FM600 User's Manual
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