HP 8712C, Руководство пользователя, Страница: 444 / 559

I
Reference
P
Phase
Offset
an OFF
(Option
in secure menu. Use with caution:
secured program lines can not be listed, seen, or edited.
See
the
HP Instrument BASIC User’s Handbook
for more information.
Access Keys: (S
YSTEM OPTIONS
)
in menu. Displays a Cartesian format of the phase portion
of the data, measured in degrees. This format displays the phase shift versus
frequency.
in menu. Adds or subtracts a phase offset that is constant
with frequency (rather than linear).
in more format menu. Displays a polar format. Each point on the
polar format corresponds to a particular of both magnitude and phase.
Quantities are read vectorally: the magnitude at any point is determined by
its displacement from the center (which has zero value), and the phase by
the angle counterclockwise from the positive x-axis. Magnitude is scaled in a
linear fashion, with the value of the outer circle usually set to a ratio value of
1. Since there is no frequency axis, frequency information is read from the
markers.
in more cal menu. Allows compensation of phase shift due to an
extended measurement reference plane.
See “Port Extensions” in Chapter 5 for more information.
Access Keys: (CAL)
9 - 5 9