Agilent Technologies 8719D, Руководство пользователя

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Divide Measurement Data by the Memory
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.
2. Press to divide the data by the memory.
The analyzer normalizes the data to the memory, and shows the results
Subtract the Memory Trace from the Measurement Data Trace
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.
Ratio Measurements in Channel 1 and 2
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 you to observe the
gain compression on channel 2 .
1.
2. Make sure that both channels must have the same number of points.
. . . . .
a. Press and notice the number of points setting, shown
on the analyzer display.
. . . . . . . . . . . . . . . . . .
. . . . .. .... . . . . . . . . . . . . ...
the channel 1 setting.
to ON to ratio channels 1 and 2, and put the results in the channel 2 data
array. This ratio is applied to the complex data.
4. Refer to “Measuring Gain Compression” for the procedure on identifying the 1
compression point.
Making Measurements 2-7