Agilent Technologies ESA-E Series User And Programming Manual page 42

Making Modulation Analysis Measurements
Making a Wideband CDMA Measurement
As a trouble shooting tool, you can manually build the polar
NOTE
constellation or step through the trace with a short line segment using
the
When you make a single measurement (press the
front panel), the data for that single measurement is held within
instrument memory. If you then set the
how the measurement is built up by slowly increasing the
figure from zero using the RPG knob.
Similarly you can set the
and vary the
see a 'snake' marking out the signal's trace on the display.
Figure 4-5 Polar Constellation Display
9. Press
28
and
I/Q Points I/Q Points Offset
I/Q Points Offset
I/Q Error (Quad View)
graphical displays of magnitude error versus time, phase error
versus time, EVM versus time, and tabular results.
keys.
I/Q Points Offset
figure to a low number (say, 5 or 10)
I/Q Points
figure using the RPG knob. Now you will
and refer to Figure
key on the
Single
to 0, you can see
I/Q Points
4-6. You should see
Chapter 4