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Chapter 4 Remote Interface Reference
Burst Mode Commands
4
BURSt:STATe {OFF|ON}
BURSt:STATe?
Disable or enable the burst mode. To avoid multiple waveform changes,
you can enable the burst mode after you have set up the other burst
parameters. The default is OFF. The :STAT? query returns “0” (OFF) or
“1” (ON).
• The function generator will not allow the burst mode to be enabled
at the same time that sweep or any modulation mode is enabled.
When you enable burst, the sweep or modulation mode is turned off.
UNIT:ANGLe {DEGree|RADian}
UNIT:ANGLe?
Select degrees or radians to set the starting phase for the burst with the
BURS:PHAS command (remote interface only). The default is DEG.
The :ANGL? query returns “DEG” or “RAD”.
•
From the front panel, the starting phase is always displayed in degrees
(radians are not available). If you set the starting phase in radians
from the remote interface and then return to front-panel operation,
you will see that the function generator converts the phase to degrees.
TRIGger:SOURce {IMMediate|EXTernal|BUS}
TRIGger:SOURce?
Select the trigger source for the triggered burst mode only. In the
triggered burst mode, the function generator outputs a waveform with
the specified number of cycles (burst count) each time a trigger is
received. After the specified number of cycles have been output,
the function generator stops and waits for the next trigger. The default
is IMM. The :SOUR? query returns “IMM,” “EXT”, or “BUS”.
•
When the
Immediate
(internal) source is selected, the frequency
at
which the burst is generated is determined by the burst period
(BURS:INT:PER command).
• 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 outputs the specified number of cycles each
time Trig In receives a TTL pulse with the edge polarity specified by
the TRIG:SLOP command (see page 217). External trigger signals
that occur during a burst are ignored.
33210A users guide.book Page 216 Wednesday, July 16, 2008 11:16 AM
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