## Usage

This dialog can be used i.e. to tune an antenna filter to a given centre frequency and a defined band-width.

The marker-math dialog is bound to one of the markers. The data displayed in this dialog is the data of this marker.

## Mode

The mode used depends on the data at the selected cursor location.

If the data left and right of the cursor is lower, than PEAK-mode is selected.

If the data left and right of the cursor is higher, than NOTCH-mode is selected.

## Limit

A limit in dB must be defined, which is used to search for the low- and high-limits.

## Return-/Transmission-Loss

If the marker should use the Return-Loss scale, the RL-radio button must be selected.

If the marker should use the Transmission-Loss scale, the TL-radio button must be selected.

## Sample - tune a bandpass-filter

Assume you want to tune a BP to a 6dB-bandwidth of 100kHz ...

1. Set one of the markers to the desired center-frequency of the bandpass-filter

2. Enter 6 in the Limit field.

3. Now tune the filter until the desired bandwidth of 100kHz is displayed in the Bandwidth-field .