Phase Offset; Procedure Using Marker; Using The Phase Offset Function; Velocity Factor - Agilent Technologies E5071C Manual

For how to determine the deviation from a linear phase, see Measuring the
Deviation from a Linear Phase.

Procedure using marker

1. Press
Channel Next/Channel Prev
to activate the trace for which you want to set the electrical delay.
2. Place the
3. Press
Maker
4. Click Marker -> Delay to set the electrical delay to the group delay
value at the position of the active marker (a value smoothed with the
aperture of 20% regardless of the smoothing setting).

Phase offset

Phase offset is a function used to add or subtract a predetermined value
relative to the frequency to and from the trace. Using this function enables
you to simulate the phase offset occurring as a result of, say, adding a
cable.
The phase offset can be specified from - 360 ° to +360 ° .

Using the Phase Offset Function

1. Press
Channel Next/Channel Prev
to activate the trace for which you want to specify the phase offset.
2. Press
Scale
3. Click Phase Offset, then enter the phase offset ( ° ) in the data entry
area.

Velocity factor

The velocity factor is the ratio of the propagation velocity of a signal in a
coaxial cable to the propagation velocity of that signal in free space. The
velocity factor for a common cable is about 0.66. The propagation velocity
depends on the dielectric constant (ƒÃ
cable.
By specifying the velocity factor, you can match the equivalent length (in
meters) appearing in the data entry area to the actual physical length
when using the Electrical Delay or Setting port extensions to specify the
electrical delay (in seconds).
You can define the velocity factor channel by channel.
Using the velocity factor
1. Press
Channel Next/Channel Prev
which you want to specify the velocity factor.
active marker in an appropriate position.
Fctn.
key.
keys and
Trace Next/Trace prev
keys and
Trace Next/Trace prev
) of the dielectric substance the
r
keys to activate the channel for
Measurement
keys
keys
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