Agilent Technologies 53147A Assembly Level Service Manual page 70

NOTE
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Chapter 2 Service
Calibration Procedures
Do not use a cable between the Thermistor Mount and the 53147A/
148A/149A Power Meter OUTPUT connector. Connect the Thermistor
Mount directly to the OUTPUT connector.
Agilent 478A-H75 or
478A-H76 Thermistor Mount
(connected to Power
Meter OUTPUT connector)
Agilent
53147A/48A/49A
Agilent
Agilent 8120-1082
Power Sensor Cable
Figure 2-7. Power Meter Reference Level Calibration Setup
Connect the Agilent 8120-1082 Power Sensor Cable between the
Thermistor Mount and the input connector on the Agilent 432A Power
Meter.
Turn on the 432A Power Meter. Wait 30 minutes for the Power Meter and
the Thermistor Mount to stabilize before proceeding to the next step.
Set the 432A Power Meter's RANGE switch to Coarse Zero.
Adjust the COARSE ZERO control on the 432A Power Meter's front panel
to obtain a zero reading on the meter.
Set the 432A Power Meter's RANGE switch to .01 mW / –20 dBm.
Press the FINE ZERO control on the 432A Power Meter's front panel down
to obtain a zero reading on the meter.
Set the 432A Power Meter's RANGE switch to 1 mW.
Set the Digital Multimeter to measure microvolts.
2-16
Agilent 432A
Power Meter
V RF
-
V COMP
+
Assembly Level Service Guide
Agilent 34401A
Digital Multimeter
+
Agilent
-