Fluke 96000 Series Service Manual page 129

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.
14. 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.
15. Push Next Target.
16. Repeat steps 13 through 15 for all points where the Target value is ≥-10 dBm
requiring the use of the Power Meter and Thermal sensor. Set the UUT to
STBY.
If using a Power Sensor with different characteristics than the one
specified is used, it may not be necessary to change types at this
point. Consult the Power Sensor manufacturer's manual for input
signal level specifications.
17. Replace the Thermal Power Sensor with the diode (low-power) sensor in the
test setup.
The diode-based Power Sensor may exhibit frequency dependent
linearity errors, and additional corrections for these errors must also
be applied.
The next steps make the mid-level flatness adjustment of the 50
Leveling Head using a Power Meter and sensor.
18. Set the UUT to OPER.
19. Repeat steps 13 through 15 for all points requiring the use of the Power
Meter and diode sensor (the UUT text box will indicate Use Power Meter).
Set the UUT to STBY.
20. Disconnect the Power Meter and low-Power Sensor from the Leveling Head.
Connect the UUT 50 Ω Leveling Head to the input of the Spectrum
Analyzer/Measuring Receiver.
Note
Note
Note
Note
Note
Calibration Adjustment
Calibration Adjustments
Ω
4
4-9