BNC 645 - Manual (Page 27)

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4. See Figure 3-6 and Figure 3-7 as sample displays.
Remote Interface Operation
VOLTage:HIGH {<voltage>|MINimum|MAXimum}
VOLTage:LOW {<voltage>|MINimum|MAXimum}
3.8 To Set Waveform Polarity
The default waveform polarity mode is Normal, in which the waveform
goes positive during the first part of the wave cycle. One may change it
to the Inverted mode where the waveform goes negative during the first
part of the wave cycle. To set the waveform polarity mode, follow the
steps below.
Front-panel Operation
• Press Utility button and then the softkey under Output Setup.
• Press the softkey under NormInvt to toggle between Normal and
Inverted. Make sure your choice is highlighted.
• Press the softkey under DONE to finish the selection.
Figure 3-9
Remote Interface Operation
OUTPut: POLarity {NORMal|INVerted}
Notes
• When a non-zero offset is used, the waveform is inverted relative
to the offset voltage, so the offset remains the same in the
inverted waveform.
• When the waveform is inverted, the Sync signal associated with
the waveform is not inverted.