Agilent Technologies Agilent 33500 Series Operating And Service Manual page 101

Burst Mode
Front Panel:
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SCPI: [SOUR[1|2]:]BURS:INT:PERiod {<seconds>|MIN|MAX}
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Start Phase
Start phase of the burst, from -360 to +360 degrees (default 0).
Specify the start phase units with UNIT:ANGLe.
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Always displayed in degrees on front panel (never radians). If set in radians from remote interface, instrument con-
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verts value to degrees on front panel.
For sine, square, and ramp, 0 degrees is the point at which the waveform crosses 0 V (or DC offset) in a positive-
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going direction. For arbitrary waveforms, 0 degrees is the first waveform point. Start phase has no effect on noise.
Start phase also used in gated burst mode. When the gate signal goes false, the current waveform cycle finishes,
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and output remains at the voltage level of the starting burst phase.
Front Panel:
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SCPI: [SOURce[1|2]:]BURSt:PHASe {<angle>|MIN|MAX}
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Burst Trigger Source
In triggered burst mode:
The instrument outputs a waveform of the specified number of cycles (burst count) when a trigger received. After
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the specified number of cycles have been output, the instrument stops and waits for next trigger.
IMMediate (internal): the instrument outputs continuously when burst mode is enabled. The rate at which the
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burst is generated is determined by BURSt:INTernal:PERiod.
EXTernal: the instrument accepts a hardware trigger at the rear-panel Ext Trig connector. The instrument out-
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puts one burst of the specified number of cycles each time Ext Trig receives a TTL pulse with the proper polarity
(TRIGger[1|2]:SLOPe). External trigger signals during a burst are ignored.
BUS (software): the instrument initiates one burst each time a bus trigger (*TRG) is received. The front-panel
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Trigger key is illuminated when the instrument is waiting for a bus trigger.
EXTernal or BUS: burst count and burst phase remain in effect, but burst period is ignored.
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TIMer: trigger events are spaced by a timer, with the first trigger as soon as
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100
INIT occurs.
Agilent 33500 Series Operating and Service Guide