Agilent Technologies FieldFox N9913A User Manual

Data Analysis Features 163
Use Data / Memory for normalization purposes, such as when comparing traces
"before" and "after" a change is made or when measuring trace noise. In the
following table, the Data/Mem values intuitively show the differences between
traces. It is not obvious what Data-Mem is displaying.
Values to compare
Data/Mem
Data-Mem
0.5 dB and 0.6 dB
0.1 dB
–39 dB
0.5 dB and 0.7 dB
0.2 dB
–33 dB
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.
Values to compare
Data/Mem
Data-Mem
–10 dB and –12 dB
2 dB
–24 dB
–50 dB and –52 dB
2 dB
–64 dB

Agilent Technologies FieldFox N9913A Specifications

General

Brand	Agilent Technologies
Model	FieldFox N9913A
Category	Measuring Instruments
Language	English