Power Meter Operation

Making Measurements with the HP E-Series Power Sensors

Making Measurements with the HP E-Series Power Sensors

This section describes how to make continuous wave measurements using the HP E-series power sensors. The HP E-series power sensors have their sensor calibration tables stored in EEPROM. This allows the frequency and calibration data to be downloaded to the power meter automatically.

To make measurements, perform the following steps:

1.Zero and calibrate the power meter.

2.Set the frequency for the signal you want to measure.

3.Take a reading.

Procedure

The following procedure details how to make a measurement on channel A of the power meter. To make a measurement on channel B use the same procedure using the equivalent channel B softkeys.

1.Ensure that no power is applied to the power sensor.

2.Press ZerCalo .

3.Press Zero A . During zeroing, which takes approximately 10 seconds, the wait symbol is displayed.

4.Connect the power sensor to the POWER REF output.

5.Press Cal, Cal A to calibrate the power meter. During calibration the wait symbol is displayed. (The power meter automatically turns on the POWER REF output.)

6. Press

Frequency

. The current setting of the frequency is displayed

Cal Fac

under the A Freq softkey.

7.To change this setting press A Freq . The power meter displays the frequency in a pop up window. Modify this frequency (see below) as desired.

■Use or to modify the digit on which the cursor is currently positioned.

■Use or to move to other digits.

8.To confirm your choice press the appropriate frequency units.

9.Connect the power sensor to the signal to be measured.

10.You must set the display to the type of measurement you require. This can either be a direct channel measurement, a ratio

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HP EPM-442A User’s Guide