Gate Trigger Style (Gate Trigger)
The first parameter to select when setting up your gate trigger is the trigger Style. This determines the source of your trigger event (e.g. external trigger, magnitude before or after IF conversion, frequency-domain, etc.).
The following Gate Trigger styles are available when the Active Input Domain is :
- Free Run: The VSA will process time records (input data) as quickly as possible with no waiting for a trigger signal (some instruments call this continuous triggering).
- Channel: Not supported.
- IF Mag: Selects the IF signal (or in band signal after digitizing and filtering) as the trigger signal.
- External or External 2: The hardware begins a measurement when the external-trigger signal meets the trigger conditions specified.
- External TTL: Selects external TTL triggering.
- Periodic: Not supported.
- Frequency Mask: Not supported.
- RF Radio Frequency: A generic term for radio-based technologies, operating between the Low Frequency range (30k Hz) and the Extra High Frequency range (300 GHz). Burst: Selects the RF signal as the trigger signal before the IF and as close as possible to the RF input. RF Burst trigger circuitry bandwidths may vary with different hardware models and the bandwidth may not be as wide as the full frequency range of the instrument but it will be wider than the IF bandwidth.
- PXI Trigger: Selects the PXI backplane trigger lines as the trigger source. The specific PXI backplane trigger line to use is selected with the PXI Source parameter.
If a particular trigger style is not available in the dropdown menu, it is because the measurement hardware does not support that trigger style.
Unavailable trigger styles are greyed in the menu and cannot be selected.
For information on trigger delay with specific measurement hardware, see Available Measurement Hardware for a link to your specific hardware.
Available trigger styles vary depending on the connected measurement hardware and options.
See Also
