GW Instek AFG-2225 User Manual - Manual (Page 201)

REMOTE INTERFACE
201
Output
Amplitude
When setting the amplitude, MINimum,
MAXimum and DEFault can be used. The range
depends on the function being used and the output
termination (50Ω or high impedance). 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.
Vrms, dBm or Vpp units can be used to specify the
output unit to use with the current command. The
VOLT:UNIT command can be used to set the units
when no unit is specified with the Apply
command. 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.
DC Offset voltage The offset parameter can be set to MINimum,
MAXimum or DEFault. The default offset is 0
volts. The offset is limited by the output amplitude
as shown below.
|Voffset| < Vmax – Vpp/2
If the output specified is out of range, the
maximum offset will be set.