BNC 645 - Manual (Page 128)

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waveform generator and will be used on the next function you choose.
APPLY:
DC [<frequency>︱DEF [,<amplitude︱DEF> [,<offset>] ]]
Output a dc voltage with the specified offset level. You can set the dc voltage to
any value between ±5Vdc into 50 ohms or ±10Vdc into an open circuit. The
waveform is output as soon as the command is executed. The specified
frequency and amplitude have no effect on the pulse wave, but are remembered
by the waveform generator and will be used on the next function you choose.
APPLY:
USER [<frequency> [,<amplitude > [,<offset>] ]]
Output an arbitrary waveform currently chosen by the FUNC:USER command
with the specific frequency, amplitude and offset. The waveform is output as
soon as the command is executed.
APPLy?
Query the current configuration and return a quoted string. The quoted string
includes the function, frequency, amplitude and offset as in the following
format:
“function frequency amplitude offset”
This command allows you to append this query response to an APPL: command
in your programming application and use the result to place the waveform
generator in the specified state.
-- B --
BURSt:MODE {TRIGgered|GATed}
Specify the burst mode. The default is Triggered mode. In the triggered mode,
the waveform generator outputs a waveform with specified number of cycles
(burst count) each time a trigger is received from the specified trigger source. In
the gated mode, the output waveform is either “on” or “off” based on the
external signal level on the Ext Trig connector on the rear panel.
--Use BURS:GATE:POL command to specify the polarity of Ext Trig connector on
the rear panel.
--When the gate signal is true, the waveform generator outputs a continuous
waveform. When the gate signal is false, the current waveform is complete and