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Calibrating for Increased Measurement Accuracy
Power Meter Measurement Calibration
displayed (436A or 438A/437).
NOTE The E4418B and E4419B power meters have a “437 emulation” mode. This allows these
power meters, with an HP/Agilent 848X-series power sensor, to be used with the network
analyzer. In this step, when selecting a power meter, choose the 438A/437 selection.
6. Set test port power to the approximate desired corrected power.
7. Press and enter the test port power level that you want at the input to your
test device. For example, if you enter , the display will read CAL POWER 10.
8. If you want the analyzer to make more than one power measurement at each frequency data point,
press:
, (where n = the number of desired iterations).
If you increase the number of readings, the power meter correction time will substantially increase.
9. Press .
NOTE Because power meter calibration requires a longer sweep time, you may want to reduce the
number of points before pressing
. After the power meter
calibration is finished, return the number of points to its original value and the analyzer will
automatically interpolate this calibration. Some accuracy will be lost for the interpolated
points.
The analyzer will use the data table for subsequent sweeps to correct the output power level at each
measurement point. Also, the status annunciator PC will appear on the analyzer display.
NOTE You can abort the calibration sweep by pressing .
10. Remove the power sensor from the analyzer test port and connect your test device.
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