BNC 645 - Manual (Page 23)

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automatically to the maximum value of the duty cycle limit range.
3.5 To Set Output Amplitude
The default amplitude for all functions is 100 mVpp (into 50 ohms). The
procedure to set a new amplitude value is described as follows.
Figure 3-5
Front-panel Operation
1. Select your desired function by pressing one of the function keys.
2. Press the softkey under Ampl/High and make sure Ampl is
highlighted. Use the numeric keypad or the knob with cursor keys
to change the value.
Remote Interface Operation
VOLTage {<amplitude>|MINimum|MAXImum}
Use this command to set units:
VOLTage:UNIT {VPP|VRMS|DBM}
Notes
• Specifying a high (voltage) level and a low level (Section 3.7) is
equivalent to specifying amplitude and DC offset (Section 3.6).
For example, if you set the high level to +2 volts and the low level
to -3 volts, the resulting amplitude will be 5 Vpp, with an offset
voltage at -0.5 V.
Figure 3-6