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Chapter 3 Configuring TN-3270/5250
If you are using the PTC-1800
outside of the U.S. or Canada, the AC
adapter can be attached to any
CEE-22-style AC cord before it is
connected to an electrical outlet.
It is not necessary to back up data or
program files that are stored on the
internal solid-state hard disk drive.
If you regularly follow this
procedure, the bridge battery should
last several years. Otherwise, you
may need to replace it sooner.
70
2. Plug the AC adapter into the unit's charger jack
and an electrical outlet.
3. Charge the bridge battery for approximately 5
hours.
Bridge battery support time
A fully charged bridge battery can safely back up the
PTC-1800's memory for approximately 10 or more
hours with the main battery pack removed.
Conditioning the bridge battery
Nickel-cadmium batteries are susceptible to "memory
effects." This means that even if the bridge battery
appears to be fully charged, it may not be able to back
up the contents of the PTC-1800's memory if the main
battery pack is removed before the PTC-1800 is placed
into suspend mode.
Memory effects are characteristic of nickel-cadmium
battery technology. To reduce the risk of memory
effects, perform the following procedure once a month
to condition the bridge battery.
1. Transfer any data stored in the PTC-1800 to a
host computer. Make sure you have a copy of any
programs stored in RAM memory.
2. Remove the main battery pack from the
PTC-1800.
3. Store the PTC-1800 and the battery pack
somewhere out of the way and at room
temperature. The PTC-1800 must not be placed in
the Model 1822 charger or be connected to any
power source during the ensuing discharge period.
4. Allow the PTC-1800 to remain idle while the
bridge battery discharges for at least 6 hours.
5. After the 6-hour discharge period, place the main
battery pack back into the PTC-1800.
PTC-1800 Product Reference Guide
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