HP 8591C User Manual

I
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Channel Measurements
Making Channel Measurements
c. Press DP TEST MTC/FCC to determine whether the test meets the
FCC or NTC deEnitions. The FCC definition of differential phase (and
that of the NCTA) measures only the largest phase deviation from
the phase of the reference packet. The NTC deEnition measures the
peak-to-peak deviation of phase from that of the reference packet.
The default is FCC (FCC is underlined) and changes are permanent
until changed by pressing DP TEST HTC/FCC again. The status of
this key is reported on the results screen just below the results box.
The system mode differential phase test uses the current setting of
this switch when the test plan was created. Which test was used is
reported on the results table.
d. Press Prev menu
6. Press # .ClF AVERAGES , enter the desired number of averages, then press
(ENTER]. The default is 50
averages. The higher the number of averages,
the more consistent results when measuring low level signals. This value
is always returned to 50 when the test is entered.
7. Press CONTINUE to perform the test.
The result of the measurement is displayed on the analyzer display. See
Figure 2-25.
86:29:53 MAR 66, 1995
B CHf+NNEL m (STD)
Mm
EF 27.10 RV
AT iB dB
U[
:
I
A SB
CTC
CORR
. . . . . . ...'
: .:..
'.
:
:
MRIN
MENU
TART 183.888 MHz
STOP 183,888 MHz
YRES 8W 388 kHz
WUBW 3 MHz
YSWP 2B psec
Figure 2-25. Differential Gain/Differential Phase Measurement
2-40

HP 8591C Specifications

General

Brand	HP
Model	8591C
Category	Measuring Instruments
Language	English