Chapter 2 211
Front-Panel Key Reference
Trace/View
Trace 1 ā 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.
CAUTION Trace 1 should be in clear write mode prior to setting normalize to on.
The normalize function is most useful for applying
correction data to a trace while making a stimulus
response measurement with a tracking generator. For
example, connect the cables and a thru line, in place of
the device 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 (1ā 3), Normalize On. Notice that
the displayed trace is now flat, or normalized. The
position of the normalized trace can now be moved to a
different position on the display by changing the
normalized reference position. This may be useful if the
device to be tested has positive gain, such as an
amplifier. Now replace the thru line with the device
under test, and an accurate measurement of the gain or
loss can be made.
Key Access:
Trace/View, More, Normalize
Norm Ref Lvl Sets the level (in dB) of the normalized reference.
Key Access:
Trace/View, More, Normalize
Norm Ref Posn
Offsets the displayed trace without affecting the
instrument gain or attenuation settings. This allows
the displayed trace to be moved without decreasing
measurement accuracy. The normalized reference
position is indicated with a (>) character on the left side
of the display and a (<) character on the right side of
the display.
Key Access:
Trace/View, More, Normalize
Ref Trace
View Blank
Allows you to view or blank the reference trace on the
display.
Key Access:
Trace/View, More, Normalize
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