User manual

WideFly Ltd. WF28 User Manual
http://www.widefly.com rev 1.1
P.23
Chapter 7: Power
Power Settings
Power settings are defined at Start > Settings > Control Panel > Power
Battery page displays remaining power of the battery. Same info is
also found in the power meter on the taskbar.
Power scheme defines power saving settings
 “Slower CPU speed in dim state” refers to PDA capability to run
slower to save power when backlight is dim
 Power saving cycle follows 3 steps (refer to the left screen as an
example):
1. After 1 minute idle, backlight is dim and CPU runs slower. A
screen tap would revert backlight to original intensity and idle
timer is reset
2. If dim state remains for another 5 minutes, backlight and
touch panel would be turned off to save more power.
3. Depending on suspend (sleep) setting, “Auto” would force
CPU to enter sleep state with maximum overall power
saving. if suspend setting is “Never”, CPU would remain in
full speed.
4. Although system looks like off because tapping screen would
not wake up the screen, Wi-Fi connection could be kept
maintained and Wi-Fi indicator displays flash blue (slow), i.e.
Wi-Fi connected.
5. In this scenario, most electronic components including Wi-Fi
module are in superb low power state. This explains why
WF28 is able to have Wi-Fi standby for few days.
6. Light press power key could wake up PDA to the original
status: turn on backlight, CPU runs in full speed.
NOTE:
WF28 is the first POS PDA to have Wi-Fi always-on capability even system is in deep sleep mode. It
behaves like a PDA phone that incoming SMS or call would wake up the system when screen and touch
panel are both off.
User training may be necessary to get familiar with this power saving behavior. Most users appreciate the
“power key to wake up” feature once they understand this helps extend battery life, without a need to
recharge in a full day operation (It depends on volume of data transaction, operating hours & power
settings). WF28 PDA provides 1200mAh & 1800mAh battery options.