Keysight Technologies 33210A - Page 196

4 Remote Interface Reference
196 Keysight 33210A User’s Guide
– Note that when you set the high and low levels, you are also setting the
amplitude of the waveform. For example, if you set the high level to +2 volts
and the low level to -3 volts, the resulting amplitude is 5 Vpp (with an offset
voltage of -500 mV).
– Limits Due to Output Termination: If you change the output termination
setting, the displayed voltage levels will be automatically adjusted (and no
error will be generated). For example, if you set the high level to +100 mVdc
and then change the output termination from 50 ohms to “high impedance”,
the voltage displayed on the function generator’s front-panel will double to
+200 mVdc. If you change from “high impedance” to 50 ohms, the displayed
voltage will drop in half. See the OUTP:LOAD command on page 199 for
more information.
– To invert the waveform relative to the offset voltage, you can use the
OUTP:POL command. See page 200 for more information.
VOLTage:RANGe:AUTO {OFF|ON|ONCE}
VOLTage:RANGe:AUTO?
Disable or enable voltage autoranging for all functions. In the default mode,
autoranging is
enabled (“ON”) and the function generator automatically selects
the optimal settings for the output amplifier and attenuators. With autoranging
disabled (“OFF”), the function generator uses the current
amplifier and attenuator
settings. The
:AUTO? query returns “0” (OFF) or “1” (ON).
–The APPLy command
overrides the voltage autorange setting and
automatically enables autoranging (“ON”).
– The advantage of disabling autoranging is to eliminate momentary disruptions
caused by switching of the attenuators while changing amplitude. However,
the amplitude and offset accuracy and resolution (as well as waveform fidelity)
may be adversely affected when reducing the amplitude below the expected
range change.
– The “ONCE” parameter has the same effect as turning autoranging “ON”, and
then “OFF”. This parameter allows you to make a one-time change to the
amplifier / attenuator setting before returning to the VOLT:RANG:AUTO OFF
setting.