Boonton 4500B Peak Power Meter - Manual (Page 341)

Boonton 4500B RF Peak Power Analyzer
Maintenance 7-9
4. Select one of the following tables (Tables 7-8 through 7-10) according to the sensor type
being tested.
5. Set the calibrator to the levels listed in the selected table and record the Marker 1 readout
values in the table. Occasionally zero the sensor when testing levels below -10 dBm by
selecting Chan 1 > Calibration > Zeroing > START.
6. If CH 2 is installed, repeat Steps 1 through 5, substituting Channel 2 for Channel 1.
Sensor Frequency Calibration Factor Verification
Verify the frequency calibration factors for the peak power sensors by comparing the Model
4500B measurements to those of an NIST traceable power sensor. The specifications for Boonton
peak power sensors are listed in Tables 7-11 through 7-14.
Before performing the sensor frequency calibration factor verification procedure, photocopy the
tables (7-11 through 7-14) that are applicable to your sensor(s) (as explained in the procedures)
and use them to record the measurement data. The sensor types 56318, 56418, 56518 and 57318
use Table 7-11 starting with the 0.50 GHz frequency. Ignore readings below 0.50 GHz for sensors
of this type. Sensor type 57518 uses Table 7-11 starting with 0.10 GHz. Ignore readings below
0.10 GHz for sensors of this type. Sensor types 56340 and 56540 use Table 7-14 starting with 0.50
GHz. Ignore readings below 0.50 GHz for sensors of this type. Attach the completed table(s) to
the Checklist.
Verify the sensor frequency calibration factor for each sensor as follows:
1. Connect the peak power sensor cable to Channel 1 of the Model 4500B.
2. Connect the peak power sensor to the Model 4500B calibrator output.
3. Press the Init system key to reset the Model 4500B settings to their default states.
4. Autocalibrate the sensor by selecting Chan 1 > Calibration > AutoCal > START.
5. Set the Timebase to 100 ms by selecting Time > Timebase > 100 ms/Div.
6. Set Marker 1 to -400 ms by selecting Mark > Marker 1 > 400 ms.
7. Set Marker 2 to 400 ms by selecting Mark > Marker 2 > 400 ms.
8. Set the Delta Marker mode to Average by selecting Mark > Extensions > Delta Marker >
Avg.
9. Connect the appropriate reference sensor (NIST traceable) to the EPM power meter.
10. Calibrate and zero the EPM power meter using its internal 50 MHz calibrator.
11. Tune the Network Analyzer to 1.0 GHz and adjust its output level to 0 dBm.