Psion Teklogix 7530 G2 Suspend Threshold, If the users application does not save data to RAM

Chapter 5: Configuration

Power Management Properties

5.6.4.3Suspend Threshold

The Suspend Threshold adjustment tells the system when to shut down when the battery drains. If you choose Maximum Operating Time, the unit will run until the battery is completely empty; the RAM is only backed up for a short period of time. If you choose Maximum Backup Time, the hand-held shuts 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 will reserve approximately 20% of the battery capacity for memory backup. Once the battery drains the system, RAM memory is lost and the unit must cold boot.

In most real-time transaction environments this is not a problem (it only takes a few seconds to cold boot). Batch transaction envi- ronments, where data is not saved to a non-volatile memory (such as an SD 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.

The 7530 G2 normal Windows CE 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 recommends keeping the Suspend Threshold setting as low as possible to maximize battery run time.

104Psion Teklogix 7530 G2 Hand-Held Computer User Manual