Agilent Technologies N9913A User Manual page 189

Use Data - Memory to show the relative differences between two signals. Use for
comparison of very small signals, such as the S11 match of two connectors.
In the following table, Data/Mem shows both pairs of connectors to have the
same 2 dB difference. However, the second pair of connectors have much better
S11 performance (–50 and –52) and the relative significance is shown in the
Data-Mem values.
Data Analysis Features
Values to compare
–10 dB and –12 dB
–50 dB and –52 dB
Data/Mem Data-Mem
2 dB –24 dB
2 dB –64 dB
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