To Divide Measurement Data By The Memory Trace; To Subtract The Memory Trace From The Measurement Data Trace - Agilent Technologies 8719D User Manual

You can use this feature for ratio comparison of two traces, for example, measurements of gain
or attenuation.
1. You must have already stored a data trace to the active channel memory, as described in "To
Save a Data Trace to the Display Memory. n
2. Press (-1.~~~~~~. to divide the data by the memory.
The analyzer normalizes the data to the memory, and shows the results
You can use this feature for storing a measured vector error, for example, directivity. Then,
you can later subtract it from the device measurement.
1. You must have already stored a data trace to the active channel memory, as described in "To
Save a Data Trace to the Display Memory."
The analyzer performs a vector subtraction on the complex data.
You may want to use this feature when making amplifier measurements to produce a trace that
represents gain compression. For example, with the channels uncoupled, you can increase the
power for channel 2 while channel 1 remains unchanged. This will allow you to observe the
gain compression on channel 2 .
1. fiesm ~~~~~~~~~~~~ito uncouple the channel&
2. Make sure that both channels must have the same number of points.
a. Press
on the analyzer display.
the channel 1 setting.
array. This ratio is applied to the complex data.
4. Refer to "Measuring Gain Compression" for the procedure on identifying the 1 dl3
compression point.
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Making Measurements 2-7