372 Chapter9
Assembly Descriptions and Block Diagrams
RF and LO Section for 8592L, 8593E, 8594E, 8594L, 8594Q, 8595E, and 8596E Analyzers
Output Amplifier
The output amplifier filters the signal emerging from the output mixer
and then amplifies it into a usable range. The amplifier also contains a
detector for leveling the output.
Bias Board
The bias board contains the ALC circuitry for the tracking generator
and distributes dc power from the A10 tracking generator control
assembly to the rest of the tracking generator. The ALC inputs come
from the A10 tracking generator control assembly (for controlling the
power level), the EXT ALC INPUT line, and the detector in the output
amplifier. The ALC loop drives the modulator.
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