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Preparing For Use
Turning on the Analyzer for the First Time
NOTE
Record the firmware date and keep it for reference. If you should ever need to call Hewlett-Packard
for service or with any questions regarding your cable TV analyzer, it will be helpful to have the
firmware date readily available.
4. To meet cable TV analyzer specifications, allow a 30 minute warm-up
before attempting to make any calibrated measurements. Be sure to
calibrate the cable TV analyzer only
U&Y
the cable TV analyzer has met
the operating temperature conditions.
5. Connect the 75 0 coaxial cable between the front-panel CAL OUT and the
INPUT 75
D
connector.
NOTE
Remove all connections to the GATE TRIGGER INPUT rear-panel connector before performing the
self-calibration routines.
6. Perform the frequency and amplitude self-calibration routine by pressing
(CAL) and CAL FREQ
&
AMPTD
During the frequency routine, CAL : SWEEP, CAL :
FREQ,
and CAL : SPAN
and CAL: FM GAIN + OFFSET are displayed as the sequence progresses.
During the amplitude routine, CAL
;
AMPTD, CAL : 3
dB
BW, CAL :
ATTEN,
and CAL :
LOGAMP
are displayed as the sequence progresses. CAL : DONE
appears when the routine is completed. Any failures or discrepancies
produce a message on the screen; see Chapter 8.
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