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10. Calibrator Amplitude Adjustment
10. Calibrator Amplitude Adjustment
Assembly
Adjusted
Al5 RF assembly
Related
Performance
Test
Calibrator Amplitude and Frequency Accuracy
Description
The CAL OUTPUT amplitude is adjusted for -10.00
dBm
measured directly at the front
panel CAL OUTPUT connector.
Figure 2-18. Calibrator Amplitude Adjustment Setup
Y
PC
BOARD
PROP
Equipment
Measuring receiver
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8902A
Power sensor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8482A
Adapters
Type N (f) to BNC (m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1250-1477
Procedure
SK113
Note
The spectrum analyzer should be allowed to warm up for at least 30 minutes
before performing this adjustment.
1. Place the spectrum analyzer in the service position shown in Figure 2-18. Prop the Al4
frequency control board assembly in the service position.
2. Zero and calibrate the HP
8902A/HP
8482A combination in log display mode. Enter the
power sensor 300 MHz cal factor into the HP 8902A.
3. Connect the HP 8482A through an adapter directly to the spectrum analyzer CAL
OUTPUT connector.
4. Adjust A15R561 CAL AMPTD for a -10.00
dBm
reading on the HP 8902A display.
Adjustment Procedures 2-47