Agilent Technologies Agilent 33500 Series Operating And Service Manual page 97

Frequency Sweep
TRIGger[1|2]:SLOPe {POSitive|NEGative}
See Triggering for more information.
Trigger Out Signal
A "trigger out" signal is provided on the rear-panel Ext Trig connector (used with burst and sweep only). When ena-
bled, a TTL-compatible pulse with either a rising edge (default) or falling edge is output from this connector at the begin-
ning of the sweep or burst.
When the Internal (immediate) trigger source is selected, the instrument outputs a square waveform with a 50%
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duty cycle from the Ext Trig connector at the beginning of the sweep or burst. The frequency of the waveform cor-
responds to the specified burst period or total sweep time.
When the External trigger source is selected, the instrument disables the "trigger out" signal. The Ext Trig con-
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nector cannot be used for sweep or burst and trigger out at the same time (an externally-triggered waveform uses
the same connector to trigger the sweep or burst).
When Manual trigger source is selected, the instrument outputs a pulse (>1 μs pulse width) from the Ext Trig con-
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nector at the beginning of each sweep or burst.
To specify whether the instrument triggers on the rising or falling edge of the Ext Trig connector, press the
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Trigger key, then Trig Out Setup. Then select the desired edge by pressing Trig Out.
SCPI:
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OUTPut:TRIGger:SLOPe {POSitive|NEGative}
OUTPut:TRIGger {OFF|ON}
Frequency List
In frequency list mode, the instrument "steps" through a list of frequencies, dwelling on each frequency for a specified
period. You may also control progress through the list with triggering.
The instrument will not allow sweep or list mode to be enabled at the same time that burst or any modulation
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mode is enabled. When you enable sweep, the burst or modulation mode is turned off.
To avoid multiple waveform changes, enable list mode after configuring its parameters.
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Front Panel: Enable list before setting any other list parameter. Press Sweep, then Type, then List.
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SCPI:
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FREQuency:MODE LIST
LIST:FREQuency <number>, <number>, ...
Progress through list is controlled by the trigger system. If trigger source is internal or immediate, the dwell time set-
ting (LIST:DWELl) determines time spent at each frequency. For any other trigger source, dwell time is determined by
trigger event spacing.
96 Agilent 33500 Series Operating and Service Guide