I
-
I
-
@iiiTETj
I
Softkey
Reference
nil
;MsstJrker
->
Softkey
in marker functions menu. adjusts the electrical delay to balance
EPec
Dday
the phase of the DUT. This is performed automatically, regardless of the
format and the measurement being made. Enough line length is added to or
subtracted from the receiver input to compensate for the phase slope at the
active marker position. This effectively flattens the phase trace around the
active marker, and can be used to measure electrical length or deviation from
linear phase. Additional electrical delay adjustments are required on
DUl3
without constant group delay over the measured frequency span. Since this
feature adds phase to a variation in phase versus frequency, it is applicable
only for ratioed inputs.
Access Keys:
(m)
Maker
Functions
Markm
->
Softkey
in marker functions menu. Makes reference level of graticule equal to
Rsf
@xwlC@
marker value; does not change reference position. If markers are off, it first
turns on marker
#I
at its previous setting or the center frequency (default).
Access Keys:
(MARKER)
Nmkex”
Flltnctfans
Marker
Softkey
in
[LiZGQ
menu. Invokes menu to select delta marker mode,
li%mctians
marker to center, marker to reference, marker to electrical delay, and marker
math functions.
&&er
Softkey
in marker functions menu. Brings up menu to select statistics,
Math
flatness, and RF hlter statistics calculations on user-dehned trace segments.
See
FlzW~ss
, RF
Fi1%~
St&x
, and
§%tist;ics
in this chapter.
Mmker
Softkey
in
I-)
menu. Displays marker search menu to perform various
Search
marker search functions.
See “Using Markers” in Chapter 4 for more information.
9-47
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