Power Meter Operation

Setting Offsets

Setting Offsets

Setting Channel Offsets

The power meter can be configured to compensate for a signal loss or gain in your test setup (for example, to compensate for the loss of a 10 dB attenuator). This gain or loss, referred to as a channel offset, is added to the measured power before the result is displayed.

Offsets are entered in dB. The allowable range of values is -100 dB to +100 dB. A positive value compensates for a loss, and a negative value compensates for a gain.

If either a channel or a display offset is set then “Ofs” is displayed.

To enter a channel offset which compensates for a loss or gain:

1. Press System .

Inputs

2.Press A Input Settings or B Input Settings depending on the channel which you want to apply offsets to.

3.Press More , Offset. The power meter displays the offset value in a pop up window. Modify this offset (see below) as desired.

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

Use or to move to other digits.

4.To confirm your choice press dB .

5.Offset Off On is automatically set to “On” when a value is entered using Offset.

Channel offsets can be disabled and re-enabled simply by pressing Offset Off On .

Setting Display Offsets

The display offset function provides a method for entering display offset values.

If either a channel or a display offset is set then “Ofs” is displayed.

To enter a display offset on the currently selected window:

1. Press Rel

Offset

,Offset .

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HP EPM-442A User’s Guide