HP Saw E4419B manual Editing Frequency Dependent Offset Tables

Power Meter Operation

Making Measurements using Frequency Dependent Offset Tables

6. Press	Frequency	. The current setting of the frequency is displayed
	Cal Fac

under the

A Freq

softkey.

7.

To change this setting press

. The power meter displays

A Freq

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 unit.

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

measurement of both channels, or a difference measurement

between both channels. Use the following key presses:

Press

Meas

,

. Select the appropriate softkey for

Input Select

Setup

the measurement you require, either

A

,

B

,

A/B

,

B/A

, or

More

,

then

, or

.

A-B

B-A

11.

The measurement result is now displayed.

Note

If the measurement frequency does not correspond directly to a

frequency in the sensor calibration table (if selected) and the

frequency dependent offset table being used, the power meter

calculates the calibration factor and offset using linear

interpolation.

If you enter a frequency outside the frequency range defined in the

sensor calibration table or the frequency dependent offset table,

the power meter uses the highest or lowest frequency point in the

appropriate table to set the calibration factor and offset.

The value of the calibration factors being used by the power meter

to make a measurement is displayed under the

or

A Cal Fac

softkeys.

B Cal Fac

Editing Frequency Dependent Offset Tables

You can edit frequency dependent offset tables using the “Edit” menu as shown in Figure 2-7.

2-32 HP E4419B User’s Guide