15. External Mixer Amplitude Adjustment
15. External Mixer Amplitude Adjustment
Assembly Adjusted
Al5 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. Only the determination of the Flatness
Compensation Amplifier slope is performed if the HP 8560A has Option 002.
SYNTHESIZED
FREQUENCY
BNC
CABLE
STANDARD
SWEEPER
EXT
SPECTRUM
POWER
SENSOR
IN
OUT
;K117
Figure 2-18. External Mixer Amplitude Adjustment Setup
Equipment
Synthesized Sweeper
............................................
HP
8340A/B
Measuring Receiver
...............................................
HP 8902A
Power Sensor
....................................................
HP 8484A
50 MHz Reference Attenuator
..................................... HP 11708A
(supplied with HP 8484A)
Adjustment Procedures 2-57
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