Developers guide
Chapter 6: Power Management
Power Management API Elements
Psion Teklogix Mobile Devices SDK Developers Guide 39
The Battery Suspend Threshold value ranges for each computer model are as follows:
6.1.5.2 Main Battery and Backup Battery Lifetimes And Remaining Charge
The battery lifetime reported by the Mobile Devices SDK may not be accurate as various system
configurations, power management settings, and the activity of various peripheral devices all
affect the rate that charge is drained from the battery.
It may not be possible to determine the remaining lifetime or the full lifetime of the backup battery
while the computer is being powered by an external source, such as an AC adaptor. As a result,
these calls may throw an exception if the computer is on external power.
The amount of charge reported as remaining in the battery may not be accurate. Also, this value
can vary due to the activity of peripheral devices such as 802.11 or Narrowband radios.
6.1.6 Power Management API Elements
C++: The power on all Psion Teklogix computers is controlled using the
PsionTeklogix::PowerManagement namespace.
Java: The power on all Psion Teklogix computers is controlled using the
com.teklogix.power package.
.NET: The power on all Psion Teklogix computers is controlled using the
PsionTeklogix.Power namespace.
6.2 Card Slots
The Mobile Devices SDK provides functions that control the power status of card slots. There are
situations, such as in hospitals or airports, where it is necessary to temporarily prevent radios from
transmitting. Using SDK functions to disable power to the card slot containing the radio achieves
this. Most Psion Teklogix hand-held and vehicle-mount computers have this feature available on
all card slots; however, there are some exceptions. Refer to the table below for details.
For those card slots that cannot be powered off, the driver for the card slot is unloaded, and all
further attempts by the application to communicate with the card slot are ignored; however, the
card slot remains fully powered, so the outcome depends on the behaviour of the radio card under
these circumstances.
Psion Teklogix
Computer
Battery Suspend
Threshold
753x 0 to 18
8515 Not available
8525/8530 Not available
Ikôn 0 to 8
NEO 0 to 13
WORKABOUTPRO Not available
WORKABOUTPRO G2 0 to 17