Fluke 96000 Series Service Manual page 135

7. Push Next Target.
8. Repeat steps 6 and 7 for all points requiring the use of the AC Measurement
Standard (the UUT text box will indicate Use Precision AC Voltmeter). Set the
UUT to STBY.
9. Disconnect the AC Measurement Standard and feedthrough termination from
the Microwave Output. Connect the UUT Microwave output directly to the
input of the 27GHz Thermal Power Sensor. Do not use a cable or adapter
between the UUT connector and the Power Sensor input.
10. Set the Power Meter for 0.001 dB resolution.
11. Set the UUT to OPER.
The next steps make the flatness adjustment of the Microwave
Output using a Power Meter and sensor.
12. Enter the measurement frequency corresponding to each Target into the
Power Meter to enable cal factor (frequency) correction.
The recommended Power Meter has Power Sensor calibration
factors stored internally in the sensor. Setting the input frequency in
the Power Meter automatically selects the appropriate cal factor for
the measurement. However, the Power Sensor may also be
accompanied by a table of calibration factors which must be applied
externally.
The Power Meter autorange boundary may coincide with a
measurement point. To avoid unwanted Power Meter autoranging
during the adjustment process, manually lock the Power Meter range
when the UUT indicates the current adjustment point is a Transfer
Point and maintain the Power Meter range lock for all frequencies at
that amplitude. When the sequence reaches the next Transfer Point
allow the Power Meter to autorange and then manually lock the
Power Meter range again, continuing in this fashion for all points
requiring use of the Power Meter.
13. Using the blue arrow keys and rotary knob, edit the UUT Actual output until
the Power Meter indicates the Target value stated. Push Accept Target.
14. Push Next Target.
15. Repeat steps 12 through 14 for all points requiring the use of the Power
Meter until all Microwave Output adjustments are completed. Set the UUT to
STBY.
16. Push Back. The Microwave Output adjustment is now complete.
17. If no further adjustment processes are to be performed, push Exit>Back>Exit
to return the UUT to a normal operating state.
Note
Note
Note
Calibration Adjustment
Calibration Adjustments
4
4-15