PYLE Audio 7505-BTSDCMHC25 user manual Suspend Threshold And Estimated Battery Backup

Chapter 5: Configuration

Power Management Properties

5.5.5.3Suspend Threshold And Estimated Battery Backup

The Suspend Threshold adjustment tells the system when to shut down when the battery drains. If left at the default value, Maximum Operating Time, the Ikôn 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 Ikôn 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 is drained, the system RAM memory is lost and the unit must boot.

In most real-time transaction environments this is not a problem (it only takes a few seconds to boot). Batch transaction environments, 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 Ikôn Windows CE 5.0 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.

The Estimated Battery Backup is the amount of battery power that has been reserved or set aside to protect data until a charged battery can be installed in the Ikôn. When the battery ca- pacity is depleted up to the Estimated Battery Backup reserve specified in the Suspend Threshold menu, the Ikôn shuts off automatically and uses the reserve power to preserve the

102Ikôn Rugged PDA (Windows CE 5.0) User Manual