Keysight Technologies N9340B, User Manual

Page: 120 / 172

Key Reference

MODE
114
Normalize
Key access:
[MODE]>{Tracking Generator } > {Normalize}
• Store Ref ( 1
→
4 )
Copies trace 1 into trace 4.
Store Ref (1
→
4)
must be
pressed before pressing
Normalize (On)
. If
Normalize
(On)
is pressed before
Store Ref (1
→
4)
, the error
message:
Store reference trace before turning on
Normalize (On) is displayed in the status line,
however Normalize has been activate.
• Normalize
Normalize(On)
activates the normalize function. On
each sweep, the normalized trace (Trace 4) is
subtracted from Trace 1 and the result is added to the
normalized reference level. The display shows the
result of the following calculation:
Trace 1 - Normalized Trace + Normalized Reference
Level
The trace data is normalized with respect to the
normalized reference level, even if the value of the
normalized reference level is changed. This function
remains in effect on all subsequent sweeps until it is
turned off.
The normalize function is useful for applying correction
data to a trace while making a stimulus response
measurement using a tracking generator. Normalize will
compensate for irregularities of the components used in
the test setup, isolating the performance of the DUT. For
example, connect the cables and use a thru line in place
of the device (DUT) to be measured, between the
tracking generator and the analyzer input. Notice that
the frequency response is not perfectly flat, showing the
response of the cables, as well as the flatness of both
the tracking generator and the analyzer. Now press
Store
Ref (1
→
4)
,
Normalize On
. Notice that the displayed trace
is now flat, or normalized. The position of the normalized
NOTE
Segmented sweep is not available when Normalize (On) is
selected. Trace 1 should be in clear write mode prior to setting
normalize to on.