User`s guide
13. For a preselected spectrum analyzer (HP
8592L,
HP 85933, HP 85953, and HP 85963) with
low signal amplitudes above 2.75
GHz,
perform a YTF calibration. For the HP
8592L,
HP 85933, or HP 85963 connect a low-loss cable (such as HP part number 8120-5148) from
100 MHz COMB OUT to the spectrum analyzer input. For the HP 8595E connect a low-loss
cable from CAL OUT to the spectrum analyzer input. Press (CAL), CAL YTF . Press
ICAL),
CAL STORE to save the correction values in memory. The
YTF
self-calibration routine
completes in approximately:
Model Number YTF Cal Time
HP 8592L
7 minutes
HP
85933
7
minutes
HP
85953
3
minutes
HP 85963
5
minutes
14. If the error message “FREQ UNCAL” stays on screen, run the frequency self-calibration
routine by pressing CAL
FREq
and then press CAL STORE .
15. Is the spectrum analyzer displaying an error message? If so, refer to “Error Messages”.
16. If the calibration routines cannot be performed or the calibration data is corrupt, use
CAL FETCH to retrieve the correction data that has previously been saved. If the fetched
correction data is corrupt, the procedure in step 18 can be used to set the correction data
back to factory default values.
17. If the display is scrambled or filled with snow, first try adjusting the horizontal position by
pressing
ICAL),
the bottom
softkey,
and then pressing the fifth
softkey
from the top. Turn
the knob counterclockwise. The vertical position will not cause this symptom.
18.
If the display is still scrambled, use DEFAULT CAL DATA per the following procedure
to reinitialize the memory area for correction factors, instrument configuration, and
miscellaneous constants. This procedure will not erase factory-installed calibration factors.
a. Press ~FREQUENCY), -37 (Hz),
ICAL),
the bottom
softkey,
the bottom
softkey
again, then
softkey
b.
FRElJ
%
Be sure CAL OUT is connected to the spectrum analyzer input.
Note
If the CAL OUT signal cannot be found, press
[FREQUENCY),
-37
IHz)
before
performing the CAL
FREq
or CAL
FREq
&
AMPTD .
c. For the HP
8592L,
HP 85933, or HP 85963 connect a low-loss cable, such as HP part
number 8120-5148, from 100 MHz COMB OUT to the spectrum analyzer input. For the
HP 85953 connect a low-loss cable from CAL OUT to the spectrum analyzer input. Press
ICAL),
CAL YTF . The YTF self-calibration routine completes in approximately:
Model Number YTF Cal Time
HP 8592L
7 minutes
HP
85933
7
minutes
HP
85953
3
minutes
HP 8596E
5 minutes
If You Have A Problem
9-3