Measuring
Electrical
Length
Measuring
Electrical
Length
1.
Press
4
F
o
rmat
5
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PHASE
,
and
then select
the desired
phase format.
2.
Do one
of the
following procedures:
Using
the marker:
a.
Press
4
Ma
rker
5
.
b.
Turn
the
rotary
knob
to
move
the
marker
to
the
center
of
the
display
.
c.
Press
4
Cal
5
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MORE
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ELEC DELAY
MENU
.
d.
Press
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MKR
!
DELAY
.
Using
the
rotary
knob:
a.
Press
4
cal
5
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MORE
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ELEC
DELAY
MENU
b.
Press
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ELECTRICAL
DELAY
.
c.
Turn
the
rotary
knob
until
the trace
becomes at
at the
specied
frequency
.
3.
Press
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ELECTRICAL
DELAY
.
Then
read
the
electrical
length
that
is
displayed
under
the
electrical
delay
time
.
Before A
dding the Electrical Length
After A
dding the Electrical Length
Figure 8-13. Measuring Electrical Length
If the average relative permittivity (
"
R
) of the DUT is known over the frequency span, the
length calculation can be adjusted to better indicate the actual length of the DUT. This can be
done by entering the relative velocity factor for the DUT.
Analyzing the Measurement Results 8-27
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