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Operator’s Manual Simple AFG Application
Berkeley Nucleonics Corporation
[email protected] | www.berkeleynucleonics.com
2955 Kerner Blvd, San Rafael, CA 94901 | 800-234-7858
Rev 1.1
Burst Mode
The burst mode allows to define the behaviour of the instrument after the Trigger reception. Touching
the “Mode” button the following menu opens and it is possible to select the burst type.
•
1 Cycles:
the instrument waits for a Trigger. When the trigger is detected it generates one time
the carrier waveform then it stops and waits for the next Trigger.
•
N-Cycles:
the instrument waits for a Trigger. When the trigger is detected it generates N times
the carrier waveform then it stops and waits for the next Trigger. The number of N cycles to
generate is defined by the
Number of Cycles
parameter.
•
Inf-Cycles:
this mode is similar to the previous one, but after the Trigger the generation starts
until the Run/Stop Button is pressed.
•
Gated:
the waveform is generated only when the Trigger is “true”. When the trigger returns to
“false” the instrument terminates the current burst sequence then it returns waiting for the
next trigger.
In Gated mode, if the source of trigger is external (from connector Trigger Inputs In 1), a trigger
condition is “true” when it crosses the selected Threshold with the selected Edge, otherwise it’s
“false” when it crosses the selected Threshold with the opposite Edge; the ‘Both’ option for the
Edge parameter is meaningless in this modality and it will be disabled.
For more information about previous parameters see the Trigger In section.
If the source of trigger is Button, a trigger condition is “true” when the Trigger button is held press,
otherwise it is “false” when you release it.
Note:
if the Noise is selected as carrier and the channel is in 1-Cycle Burst or N-Cycles Burst mode, the
Duration Burst [s]
control will appear in Carrier Setting and the user can specify the duration of a single
burst generation.
Note:
after the execution of the each burst the Output voltage level keeps the Last Sample voltage
(equal to the First sample) of the carrier waveform. This is true except for Exponential Rise, Exponential
Decrease and Arbitrary Carrier where the
Wait Trigger On
parameter is enabled:
