Keysight M8194A User Manual page 101

M8194A Soft Front Panel 3
XDelta, 1.0E+06
YUnit, lin
Y
0.987, -0.2343
0.995, 0.5674
...
...
1.269, -0.765
The above files are is composed of a header with relevant information. In
these particular cases, the files contains 1024 linear correction factors
spaced by 1 MHz and starting at 1 GHz. The 'Y' character indicates the
starting point for the correction factor list composed of 1024 lines with
amplitude/phase pairs separated by commas. For one-channel files there
is a amplitude/phase pair per line while for two channel files there are two
pairs (Amp1, Phase1, Amp2, Phase2).
The way this information is applied by the Soft Front Panel software
depends on the signal generation mode and the signal category. For direct
conversion multi-tone RF generation modes ('Generate IQ Data'
unselected), corrections are applied directly to the tones based on their
absolute frequency. For up-converted multi-tone baseband generation
(I/Q) modes ('Generate IQ Data' selected), corrections are applied to the
complex baseband signals. So, the internal or external carrier frequency is
represented by the central entry in the list (i.e., entry #512 in the 1024
entries example shown above) regardless of the 'XStart' parameter. For
Complex Modulated waveforms, corrections are always applied to the
complex baseband signals regardless of the 'Generate IQ Data" check box
setting so, as it happens with the correction of multi-tone baseband
signals, the internal or external carrier frequency is represented by the
central entry in the list.
Keysight M8194A 120 GSa/s Arbitrary Waveform Generator User Guide 101