User manual

Psion Teklogix 7535/7530 Hand-Held Computer User Manual 111
Chapter 5: Configuration
Suspend Threshold
Switch State To Suspend
Important: Psion Teklogix recommends setting the Suspend value to 10 min-
utes. Setting ‘Switch State To Suspend’ to ‘Never’ will adversely
affect the battery run time.
To further reduce power consumption, carefully consider the
duration of time that the display backlight is ‘on’ (see “Display
Backlight” on page 95).
When the 7535/7530 is idle – not receiving any user input (a key touch, a scan, and
so on) or system activity (serial data, an activity initiated by an application, and so
on), the hand-held uses the value assigned in the Switch State To Suspend field to
determine when the unit will go to sleep (appear to be off).
When the time in the Suspend field elapses without any activity, the unit enters
suspend state. In suspend state, the 7535/7530 CPU enters a sleep state, and the
radio is shut off. The state of the device (RAM contents) is preserved. Pressing
<ENTER> wakes the system from suspend state. When the 7535/7530 is in suspend
state, the network connection will not be broken immediately. If the connection is
dropped, you must re-establish the network connection.
5.5.4.3 Suspend Threshold
Figure 5.22 Advanced Tab
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.