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Chapter 3 Features and Functions
Frequency Sweep
3
Sweep Trigger Source
In the sweep mode, the function generator outputs a single sweep when a
trigger signal is received. After one sweep from the start frequency to the
stop frequency, the function generator waits for
the next trigger while
outputting the start frequency.
• Sweep trigger source: Internal, External, or Manual. The default
is Internal.
•When the Internal (immediate) source is selected, the function
generator outputs a continuous sweep at a rate determined by the
sweep time specified.
•When the External source is selected, the function generator will
accept a hardware trigger applied to the rear-panel Trig In connector.
The function generator initiates one sweep each time Trig In receives
a TTL pulse with the specified polarity.
• The trigger period must be greater than or equal to the specified
sweep time
plus 1 ms.
•
When the
Manual
or
External
source is selected, the function generator
outputs one sweep each time the front-panel key is pressed.
• Front-Panel Operation:Press the Trigger Setup softkey and then
select the desired source by pressing the Source softkey.
To specify whether the function generator triggers on the rising or
falling edge of the Trig In connector, press the Trigger Setup softkey.
Then select the desired edge by pressing the Slope softkey.
• Remote Interface Operation:
TRIGger:SOURce {IMMediate|EXTernal|BUS}
Use the following command to specify whether the function generator
triggers on the rising or falling edge of the signal on the Trig In
connector.
TRIGger:SLOPe {POSitive|NEGative}
See “Triggering” on page 98 for more information.
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