HP (Hewlett-Packard) 8591C Cable Box User Manual


 
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Making Measurements Using Spectrum Analyzer Mode
Stimulus-Response Measurements
Adjusting the resolution bandwidth may result in a decrease in amplitude
of the signal. This is known as a tracking error. Tracking errors occur
when the tracking generator’s output frequency is not exactly matched
to the input frequency of the spectrum analyzer. Tracking errors are
most notable when using narrow resolution bandwidths. Tracking error
can be compensated manually or automatically. In narrow bandwidths,
the manual method of adjusting the tracking is usually faster than the
automatic tracking adjustment. To compensate for the tracking error
manually, press
(AUX],
Track Gen , and MAN TRK ADJUST , then
use the knob to adjust the trace for the highest amplitude. To compensate
for the tracking error automatically, press
(AUXCTRL),
Track Gen , then
TRACKING PEAK .
IEF
48.8
dBmV
AT
10
d!3
‘EAK
-0G
10
-
jB/
SRC
TRACK
ADJ
\
SRC
PWR
01
OFF
TRACKING
PEAK
WA
SB
SC
FC
CORR
PWR
SWP
ON
O&
SK
ATI\
@J
AUTC
CENTER
350
0
MHZ
SPAN
500.0
MHZ
#RES
BW
10
kHr
VBW
10
CHL
SWP
15.0
set
Figure
5.8.
Manual Tracking Adjustment Compensates for Tracking Error
5-19