Boonton 4500B Peak Power Meter - Manual (Page 53)

Boonton 4500B RF Peak Power Analyzer
Getting Started 3-19
STEP PROCEDURE
8. Press the Chan 1 > Calibration > AutoCal menu key to initiate the automatic zeroing and sensor calibration routine.
The AutoCal routine will calibrate the entire dynamic range of the sensor in approximately 1.5 minutes while
reporting status via screen messages. AutoCal will not start if there are any pending errors. Press CLR to clear errors
before initiating AutoCal. A listing of error messages appears in Appendix A Error Messages.
9. If an error message appears after you have initiated AutoCal, verify the following:
a. Is the sensor that is connected to the calibrator also connected to the channel indicated in the Chan 1 >
Select menu?
b. Are the sensor cable connections secure at both the sensor and instrument input channels?
c. Were any errors pending before you initiated AutoCal?
d. Does the instrument pass its self-test (no errors reported when you pressed PWR)?
To repeat the self-test, press Spcl > Servicing > Self Test.
e. Has an improper value been entered into the CF in dB window? (Refer to the discussion of the Chan 1 >
Extensions menu later in this section.)
f. Are any attenuators or other devices that are connected between the sensor and the calibrator not
accounted for in the CF in dB value? (Refer to the discussion of the Chan 1 > Extensions menu later in this
section.)
Figure 3-4. Menus for Sensor Calibration Procedure