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3. Operating Instructions
3.1.3. Caring for the Battery
The CT100B has an intelligent battery-charging circuit that dynamically determines the
optimum charge rate and reverts to low-level trickle charge when the battery is fully charged.
Charging is automatic and there are no charge-length restrictions.
The battery should be charged between 0
◦
C and +45
◦
C. Battery operation should be limited to
between 0
◦
C and +50
◦
C. Batteries should be stored between -20
◦
C and +60
◦
C. If the battery
pack is older, it may not show a 100% charge capacity even when the maximum battery charge
is obtained.
CAUTION: Do not attempt to charge the battery pack below 0
◦
C or above
+45
◦
C. Batteries should not be stored below -20
◦
C or above +60
◦
C.
3.1.4. Charging and Power Status
The CT100B operates from a 24 volt power adapter or the internal battery pack.
In the
Power
menu, a submenu of the
Settings
menu, the user can set power save and shutdown
timers. Different timeout values can be set for when the CT100B is using the AC/DC converter
or batteries. In power save mode, the screen goes blank and only enough power is used to
monitor for user input. When input is received, the CT100B resumes normal operation. When
the shutdown timer expires, the CT100B will turn off.
A battery indicator can be toggled on or off with the
Power Display
menu option in the
Power
menu. The indicator will show the level of charge in the battery. It will also show if the 24 volt
adapter is attached and providing power.
3.1.5. Batteries and Long-Term Storage
The CT100B has NiMH internal batteries. These batteries will drain if the CT100B is left in
storage over long periods. To preserve battery charge for as long as possible during storage,
make sure the power switch on the back of the CT100B is set to the OFF position. After several
months of storage, the internal batteries may be completely drained. Allow up to 4 hours for the
first recharge of the CT100B after coming out of long-term storage.
3.1.6. Low Battery
When a low battery condition is first encountered, the CT100B alerts the user.
Internal
Battery Low
text appears on-screen in red when the battery percentage left drops below 20
percent.
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CT100B TDR Cable Analyzers Operator’s Manual