74 Keysight M8194A 120 GSa/s Arbitrary Waveform Generator User Guide
3 M8194A Soft Front Panel
The following example illustrates another possible use of custom
modulation to define a distorted constellation. In this particular case, a
O-QPSK modulation with a quadrature error (non-perpendicular I and Q
axis) is defined:
#2
Offset, yes
iq
1.05, 1.05
-0.95, 0.95
-1.05, -1.05
0.95, -0.95
The above file includes a line to indicate that this is an offset modulation.
The resulting constellation after loading this file is shown as following:
The following is a more complex example:
#3
Offset, no
Rotation, 10.0
RotMODE, cont
iq
1.0, 0.0
2.0, 0.0
0.0,1.0
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