BNC 645 User Manual
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the waveform generator stops while remaining at the voltage level
corresponding to the starting burst phase of the selected waveform. And the
output stops immediately in a noise waveform when the gate signal is false
.
--
The burst count, burst period and trigger source are for triggered burst mode
only.
BURSt:MODE?
“TRIG” or “GAT” will be returned.
BURSt:NCYCles {<# cycles>|INFinity|MINimum|MAXimum}
Specify the number of cycles to be output in each burst (triggered burst mode
only). The range is from 1 to 50,000 cycles in 1 cycle increments and the default
is 1 cycle. The maximum value depends on the burst period and frequency as
shown below. Specify Infinite to generate a continuous burst waveform When
using the Immediate(Internal) trigger source
(TRIG:SOUR IMM command),
the
burst count must be less than the product of the maximum burst period and the
waveform frequency:
Burst Count < Maximum period x Frequency.
--
The waveform generator will automatically increase the burst period up to its
maximum value to accommodate the specified burst count, but it won’t change
the waveform frequency.
-- The burst count does not apply in the gated mode. However, if you specify a
new burst count while in the gated mode, the waveform generator will
remember it and use it when the triggered mode is selected.
BURSt:NCYCles?
The burst count will be returned. The range is from 1 to 50,000, and 9.9E+37 is
returned if Infinite is specified.
BURSt:INTernal:PERiod {
burst period is ignored when external or manual trigger source is enabled (or
when the gated burst mode is chosen). The range is from 1 µs to 500 seconds
and the default is 10 ms. The maximum value is 500 s, but the minimum value
depends on the burst count and frequency as shown below: