NEO PX750BT, Руководство пользователя

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Chapter 6: Settings
Suspend Threshold
150 NEO Hand-Held with Windows Mobile 6.1 Classic User Manual
6.25.6 Suspend Threshold
This applet allows you to determine the amount of battery power that you want to reserve in
the main battery to protect the data stored in NEO.
6.25.6.1 Suspend Threshold and Estimated Battery Backup
The Suspend Threshold lets you determine when NEO will shut down. If the slider is left at
the default value, Maximum Operating Time , the hand-held will run until the battery is com-
pletely empty; the RAM is only backed up for a short period of time. If you choose
Maximum Backup Time , the hand-held will shut off with more energy left in the battery so
RAM can be backed up for a longer period of time.
Important: Selecting ‘Maximum backup time’ reserves approximately 20% of the
battery capacity for memory backup. Once the battery is drained, the system
RAM memory is lost and the unit must reboot.
In most real-time transaction environments, this is not a problem (it only
takes a few seconds to boot). However, batch transaction environments,
where data is not saved to non-volatile memory (a microSD FLASH card),
may need to pay particular attention to this parameter. Psion Teklogix does
not recommend the storage of any valuable data in system RAM.
NEO’s Windows environment does not store any critical data in RAM (such
as the registry or file system).
If the user's application does not save data to RAM, Psion Teklogix recom-
mends keeping the Suspend Threshold setting as low as possible to
maximize battery run time.