BNC 7000 Series Programmer Manual - Manual (Page 33)

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A trigger signal comprises both positive and negative signal transitions (states), which are also called
high and low periods. You can configure the SERIES 7000 to trigger on either state of the trigger
signal. It is common to have multiple triggers, also referred to as trigger occurrences or events, occur
when the instrument requires only a single trigger. In this situation, the SERIES 7000 recognizes the
first trigger and ignores the rest.
There are four parts to configuring the trigger:
1. Choosing the trigger type which controls the waveform’s transmission.
• NORMal : trigger edge initiates/stops sweeps
• GATE : trigger level starts/stops sweep
2. Setting the waveform’s response to triggers:
— CONTinuous : reapeatedly accepts trigger events
— SINGle : uses only one trigger event
3. Selecting the trigger source which determines how the SERIES 7000 receives its trigger signal,
internally or externally. The GATE choice requires an external trigger.
4. Setting the trigger polarity when using an external source
Command Parameters Unit
(default)
[SOURce]:TRIGger[:SEQuence]:TYPE NORMal | GATE | POINT
[SOURce]:TRIGger[:SEQuence]:TYPE:GATE LOW|HIGH HIGH
[SOURce]:TRIGger[:SEQuence]:SOURce IMMediate | EXT | BUS IMM
[SOURce]:TRIGger[SEQuence]:SLOPe POSitive|NEGative POS
:TRIGger:TYPE
[SOURce]:TRIGger:TYPE NORMal | GATE | POINT
[SOURce]:TRIGger:TYPE?
This command sets the trigger type
The following list describes the trigger type command choices:
NORMal Upon triggering, the waveform sequence plays according to settlings defined
by :INITiate:CONTinuous (only once or repeatedly)
GATE An external trigger signal repeatedly starts and stops the waveform’s
playback. The time duration for playback depends on the duty period of the
trigger signal and the gate polarity selection. The waveform plays during the
inactive state and stops during the active polarity selection state. The active
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