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

SWEEPER

FREQUENCY

BNC CABLE

STANDARD

 

EXT

 

SPECTRUM

POWER SENSOR

IN OUT

;K117

Figure 2-18. External Mixer Amplitude Adjustment Setup

Equipment

Synthesized Sweeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Measuring Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50 MHz Reference Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HP 8340A/B HP 8902A HP 8484A HP 11708A

(supplied with HP 8484A)

Adjustment Procedures 2-57