The SOURce[1|2|3|3RF|pulse]:AMPLitude
command sets the output amplitude for the
selected channel. The query command returns the
current amplitude settings.
The maximum and minimum amplitude depends
on the output termination. The default amplitude
for all functions is 100 mVpp (50Ω). If the
amplitude has been set and the output termination
is changed from 50Ω to high impedance, the
amplitude will double. Changing the output
termination from high impedance to 50Ω will half
the amplitude.
The offset and amplitude are related by the
following equation.
|Voffset| < Vmax – Vpp/2
If the output termination is set to high impedance,
dBm units cannot be used. The units will default to
Vpp.
The output amplitude can be affected by the
function and unit chosen. Vpp and Vrms or dBm
values may have different maximum values due to
differences such as crest factor. For example, a
5Vrms square wave must be adjusted to 3.536
Vrms for a sine wave.
The amplitude units can be explicitly used each
time the SOURce[1|2|3|3RF|pulse]:AMPlitude
command is used. Alternatively, the VOLT:UNIT
command can be used to set the amplitude units
for all commands.
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