8 Trigger
8.1 Trigger
selected trigger conditions are met, generally when your trigger source signal meets
the specified trigger level and polarity requirements. (In FFT measurements, the
trigger controls when the data acquisition begins for FFT conversion.)
For each of the trigger sources, you may define a set of operational parameters or
settings, which will be applied when that source is selected as the current trigger
source. Examples of these settings are Trigger Level, Trigger Delay, and Trigger
Slope. You may apply different settings for each source; so, for example, you could
have a Trigger Level of 1v for External 1 trigger and -10 dBm for Video trigger.
Once you have established the settings for a given trigger source, they generally will
remain unchanged for that trigger source as you go from measurement to
measurement within a Mode (although the settings can change as you go from
Mode to Mode). Furthermore, the trigger settings within a Mode are the same for
the Trigger menu, the Gate Source menu, and the Periodic Sync Src menu. That is, if
Ext1 trigger level is set to 1v in the Trigger menu, it will appear as 1v in both the
Gate Source and the Periodic Sync Src menus. For these reasons the trigger
settings commands are not qualified with the measurement name, the way the
trigger source commands are.
Trigger Setup Parameters:
The following examples show trigger setup parameters using an external trigger
source.
Example 1 illustrates the trigger conditions with negative slope and no trigger
occurs during trigger Holdoff time.
Example 2 illustrates the trigger conditions with positive slope, trigger delay, and
auto trigger time.
Short Range Comms & IoT Mode User's &Programmer's Reference 2320
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