Tektronix WFM2200A, Руководство пользователя

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To select a fixed gain setting.
Select a fixed gain setting by performing the
following actions:
1. Press and hold the GAIN button to display the Gain pop-up menu.
2. Use the arrow keys to select Gain Settings , and then select one of the
available fixed gain settings. The GAIN button stays illuminated when a
fixed gain setting other than 1x is selected.
3. After you press the GAIN button to close the pop-up menu, you can then
press the GAIN button again to toggle the gain between 1x and the last
selected gain setting.
To select a variable gain setting.
Select a variable gain setting by performing the
following actions:
1. Enable variable gain using one of the following methods. The VAR button
illuminates when variable gain is enabled.
■ Press the VAR button.
■ Press and hold the GAIN button to display the Gain pop-up menu. Use
the arrow keys to select VAR Gain > Enable , and then press the GAIN
button to close the pop-up menu.
2. Use the General knob or the up/down arrow keys to adjust the gain.
3. Press the VAR button to toggle the gain between the fixed gain setting and
the selected variable gain setting.
NOTE.
When variable gain is enabled and a gain setting other than 1x is also
selected (GAIN and VAR buttons are illuminated), the gain settings are
multiplied together. For example, if variable gain is enabled and set to 1.2x,
and a fixed gain of 5x is also selected, the displayed gain will be 6x (5 x 1.2).
When both gain and variable gain are enabled, press the or buttons to toggle
the portion of the gain associated with that button on and off.
To set the sweep rate
The sweep function applies only to the Waveform, External Reference
Waveform, and Bowtie displays. The sweep settings for each display type are
independent of each other.
The default sweep setting is 1 Line. You can use the Sweep pop-up menu to
select one of the available sweep settings:
1. Press and hold the SWEEP button to display the Sweep pop-up menu.
2. Use the arrow keys to select a line or field sweep. The available sweep
options depend on which display mode is active.
Functions
154 WFM2300 and WFM2200A Waveform Monitors User Manual