Agilent Technologies Agilent 33500 Series Operating And Service Manual page 104

Triggering
This section describes the instrument's triggering system.
Trigger Overview
This triggering information applies to sweep and burst only. You can issue triggers for sweeps or bursts using internal
triggering, external triggering, timer triggering, or manual triggering.
Internal or "automatic" (default): instrument outputs continuously when sweep or burst mode is selected.
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External: uses rear-panel Ext Trig connector to control sweep or burst. The instrument initiates one sweep or out-
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puts one burst each time Ext Trig receives a TTL pulse. You can select whether instrument triggers on rising or fall-
ing edge.
Manual: triggering initiates one sweep or outputs one burst each time you press Trigger on the front panel.
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When you sweep a list, trigger moves the waveform to the next frequency in the list.
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The Trigger key is disabled when in remote and when a function other than burst or sweep is currently selected.
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Trigger Sources
This triggering information applies to sweep and burst only. You must specify the source from which the instrument
accepts a trigger.
Sweep and Burst trigger source: Immediate (default), External, Manual or Timer.
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The instrument will accept a manual trigger, a hardware trigger from the rear-panel Ext Trig connector, or con-
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tinuously output sweeps or bursts using an internal trigger. You can also trigger bursts based on a timer. At power-
on, immediate trigger is selected.
Trigger source setting is volatile; set to internal trigger (front panel) or immediate (remote interface) by power
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cycle or *RST.
Front Panel:
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Enable sweep or burst. Then:
SCPI: TRIG[1|2]:SOUR {IMMediate|EXTernal|TIMer|BUS}
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The APPLy command automatically sets the source to Immediate.
Immediate Triggering
Internal trigger mode (default): instrument continuously outputs sweep or burst (as specified by sweep time or burst
period).
Agilent 33500 Series Operating and Service Guide
Triggering
103