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Analyzer
Battery
Information
The HP
8591C
cable TV analyzers use a 3.6 V lithium battery to enable
the cable TV analyzer memory to retain data. The date when the battery
was installed is on a label on the rear panel of the cable TV analyzer. (See
Figure
2-
10.)
The minimum life expectancy of the battery is 8 years at
25OC,
or 1 year
at
55°C.
If you experience problems with the battery or the recommended
time period for battery replacement has elapsed, see “How to Return Your
Analyzer for Service” in Chapter 8.
If you wish to replace the battery yourself, you can purchase the service
documentation that provides all necessary test and maintenance information.
The battery is soldered onto the cable TV analyzer processor board.
You can order the service documentation for an HP
8591C
cable TV analyzer
through your HP Sales and Service office. The documentation is described
under “Service Documentation (Option 915)” in Chapter 9 of this manual.
After replacing the cable TV analyzer battery, write the date of battery
replacement on the rear-panel label.
BATTERY LIFE
A
8
YEARS
AT
25’C
1
YEAR
AT
55°C
/
NSTALLED
Figure
2-10.
Rear-Panel Battery Information label
2-31