Boonton 4500B Peak Power Meter Manual do Utilizador descarregar pdf (Página 346)

100

101

Boonton 4500B RF Peak Power Analyzer

Maintenance

7-14

7.8 1GHz Calibrator Output Level Calibration

Calibrator 0 dBm Setting

Use the following procedure to calibrate the calibrator 0 dBm output setting:

1. Perform steps 1  10 of the Calibrator 0 dBm Verification procedure in section 7.6

2. If P

is between 0.985 mW and 1.015 mW, the output power is within specification. No

calibration is needed. Otherwise, continue to the next step.

3. Enable the UUT cal mode by selecting Spcl > Servicing > Cal Mode > ON.

4. View the UUT fixed cal number by selecting Spcl > Calibrator > Extensions > Fixed Cal.

5. Calculate the new fixed cal (to two decimal places) with the following formula:

N = Fixed Cal  [10 × LOG

)]

Where: N = New fixed cal.

Fixed Cal = Value recorded in Section 7.6 step 14.

= Value recorded in Section 7.6 step 10.

6. Enter the new fixed cal into the UUT by selecting Spcl > Calibrator > Extensions > Fixed

Cal > N (where N is the number calculated in step 5).

7. Disable UUT cal mode by selecting Spcl > Servicing > Cal Mode > OFF. This step must be

accomplished to set the new EEPROM checksum in the UUT calibrator.

8. Verify the new 0 dBm power output by repeating Section 7.6, steps 1 through 10.

This completes the calibration procedure.

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