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Agilent E1441A Application Information 39
Chapter 2
function generator is triggered on the rising edge of the trigger source.
When the "gated" burst mode is selected, the burst count, burst rate, and
burst phase are ignored (these parameters are used for the counted burst
mode only).
Use the following command to set the burst count:
BM:NCYCles <# cycles>|INFinity|MINimum|MAXimum
Burst Rate The burst rate defines the frequency at which internally triggered bursts are
generated. The burst rate frequency defines the interval between bursts.
Used only in the counted burst mode (with TRIG:SOUR INTernal).
Keep in mind that the burst rate is different than the “carrier frequency”
which specifies the frequency of the burst signal.
Burst rate: 10 mHz to 50 kHz. The default is 100 Hz.
When in "counted" burst mode, but with an external trigger source selected
(TRIG:SOUR EXT|TTLTRG<n>), the burst count and burst phase remain
in effect but the burst rate is ignored.
When the "gated" burst mode is selected, the burst count, burst rate, and
burst phase are ignored (these parameters are used for the counted burst
mode only).
It is possible to specify a burst rate which is too fast for the function
generator to output with the specified carrier frequency and burst count. If
the burst rate is too high, the function generator will internally adjust it as
needed to allow repeated triggering the burst. The adjustment is handled
internally by the function generator (the burst queried will be the same as
specified).
Use the following command to set the burst rate:
BM:INTernal:RATE <frequency>|MINimum|MAXimum
Burst Phase The burst phase defines the starting phase of the burst.
Burst phase: -360 degrees to +360 degrees, in 0.001 degree increments.
The default is 0 degrees.
For sine, square, triangle, and ramp waveforms, 0 degrees is the point at
which the waveform crosses zero volts (or the dc offset value), in a
positive-going direction.
For arbitrary waveforms, 0 degrees is the first data point downloaded to
memory.
When the "gated" burst mode is selected, the burst count, burst rate, and
burst phase are ignored (these parameters are used for the "counted" burst
mode only).