Bnc 645 User Manual download pdf (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

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Bnc 645 User Manual Page 128