Chapter 3 147
Manual Adjustment Procedures
11 . External Mixer Amplitude Adjustment
11. External Mixer Amplitude Adjustment
Assembly Adjusted
A15 RF assembly
Related Performance Test
IF Input Amplitude Accuracy
Description
The slope of the flatness compensation amplifiers is determined. The
user-loaded conversion losses for K-band are recorded and reset to
30 dB. A 310.7 MHz signal is applied to the power sensor and the power
level of the source is adjusted for a −30 dBm reading. The signal is then
applied to the IF INPUT. The flatness compensation amplifiers are then
adjusted (via DACs) to place the displayed signal at the reference level.
Figure 3-21 External Mixer Amplitude Adjustment Setup
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