Advanced - Motorola 7545MBW User Manual

3 - 46 Omnii Hand-Held with Windows CE 6.0 User Manual
IMPORTANT
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 hand-held. When the battery capacity is depleted up to the
Estimated Battery Backup reserve specified in the Suspend Threshold menu, the Omnii shuts off automatically
and uses the reserve power to preserve the data stored on the computer. Once the Omnii shuts down, it
cannot be switched on until a fresh battery is installed, or the unit is inserted in a docking station or cradle.
• Slide the Suspend Threshold button to the right to increase the battery capacity reserved for backup pur-
poses. Data will be preserved to a maximum of 124 hours.
• Slide the Suspend Threshold button to the left to decrease the power reserved for backup purposes; this
increases the Omnii operating time — the amount of time the unit will operate before shutting down — but
reduces the power reserved for backup purposes to a minimum of 24 hours.
Internal super-capacitors will protect the data stored in the computer while the battery is swapped for a fully
charged one.
IMPORTANT

Advanced

• In the Power Properties dialog box, open the Advanced tab.
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 cold boot.
In most real-time transaction environments this is not a problem (it only
takes a few seconds to cold 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.
Motorola does not recommend the storage of any valuable data in
system RAM.
The Omnii Windows Embedded CE 6.0 environment does not store
any critical data in RAM (such as the registry or file system).
If your application does not save data to RAM, Motorola recommends
keeping the Suspend Threshold setting as low as possible to maxi-
mize battery run time.
Once the battery is removed, the super-capacitors will preserve the
data stored on the Omnii for approximately 4 minutes. It is critical that
you install a charged battery before this time elapses.