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Getting Started
Improving Accuracy with Self-Calibration Routines
2. On the cable TV analyzer, press
m
and CAL FREQ
&
AMPTD Cal
signal not found will be displayed if CAL OUT is not connected to the
cable TV analyzer input. The frequency and amplitude self-calibration
functions take approximately 5 minutes to finish (9 minutes with Option
130) at which time the internal adjustment data is in working RAM.
3. To save this data in the area of cable TV analyzer memory that is saved
when the cable TV analyzer is turned off, press CAL STORE
NOTE
To interrupt the calibration routines started
bv
CAL FREQ , CAL AMPTD
, or
CAL
FREQ
$ AMPTD , press [PRESET), (CAL), More 1 of 4, and CAL FETCH.
CAL FETCH retrieves the previous correction factors. Improperly interrupting the self-calibration
routines may result in corrupt correction factors.
(If
this occurs, press CAL
FREQ
&
AMPTD to
rerun the frequency and amplitude self-calibration routines.)
The frequency and amplitude self-calibration functions
cm
be done
separately by using the CAL FREQ or CAL AMPTD softkeys instead of
CAL FREQ
i&
AMPTD
NOTE
If the frequency calibration
CAL FREQ
and the amplitude calibration
CAL AMPTD
self-calibration routines are used, the frequency calibration should be performed before the amplitude
calibration, unless the frequency data is known to be accurate.
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