This mode allows using different values within one sequence. The range of the scale
factor is from 0.0 to 1.0.
A scale factor of 1.0, which is a “safe” value in terms of clipping, reduces the overall
possible output amplitude to approx. 37.6%. Clipping is highly depending on IQ input
data provided by the user. Therefore, this 3rd mechanism allows scale factor values in
the range from 0.0 to 2.828 and allows using as much as possible from the available
DAC range. The user is responsible to select a proper scale value depending on his
input data.
Additionally, this scale factor input is automatically multiplied with the values provided
by the action table or amplitude table. So, with e.g. a scale factor set by the soft front
panel to the value of 1.5 and a value of 0.5 provided by the amplitude table, the
resulting output scale factor that is written to the amplitude multiplier is 0.75.
So scaling by the tables is used to scale segments relative to each other e.g. play one
segment multiple times with individual output amplitudes. An overall adjustment of the
output amplitudes (valid for all segments together) can be done using the SCPI (see
section 8.24.4) command or the soft front panel.
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