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Chapter 4
Power System
Charging the Backup Battery for the First Time
MT380 is equipped with a Lithium-Ion battery pack. After long storage periods, the unit may not poweron without an external power adapter due to battery discharge. In this case, connect MT380 to the power adapter and recharge the unit for about 12 hours to fully charge the battery.
NOTE:
MT380 can operate for approximately two hours (depending on the hardware configuration and backlight usage) or can store data for three days when there is no external power. Operating with the backlight at 100% brightness and using the finger print utility consumes more power. Therefore, when MT380 is disconnected from external power, the unit will enter sleep mode and turn off the backlight. When you tap the touch panel, the backlight is set to minimum brightness to saving battery power.
Checking the Battery Status
If the main battery level becomes low in the course of normal use, a status icon appears on the device taskbar indicating low or very low battery status. If the battery level reaches low status, the device will enter suspend mode; if the battery level reaches very low status, the device will enter deep sleep mode. In this case, you have about 12 hours to recharge your device after which you risk losing all data on your device’s internal memory.
When the backup battery is low, an icon appears in the Taskbar indicating that you should recharge the backup battery as soon as possible.
Check the Power Properties by tapping →
Settings → Control Panel → Power.
CAUTION!
When there is no external power and the backup battery icon appears in the system tray, you should backup the data from MT380 immediately.
Chapter 4 Power System
Extending Battery Life
You can extend MT380 battery life by doing either of the following:
• Changing the automatic power settings
• Reducing CPU speed
• Minimizing the use of backlight
Changing the Automatic Power Settings
MT380 enters idle mode when there is no task, or all tasks are waiting for input. In the default setting,
MT380 enters User Idle mode when there is no user input after one minute. The remains idle for 3 minutes and when there is no external charging power connected. Pressing the power button returns
MT380 to the previous screen at the time of automatic shutdown.
To change the automatic power settings:
1.
Open the Power Properties by tapping → Settings → Control Panel → Power.
2.
Tap the Schemes tab.
3.
Tap the automatic shut off time arrow to select from a list of time periods for the following modes:
– User Idle: MT380 switches to User Idle mode when there is no user input after the selected time.
– Switch state to System Idle: MT380 switches to from User Idle mode to System Idle mode when the system is inactive after the selected time.
– Switch state to Suspend: MT380 switches from System Idle mode to
Suspend mode when the system is inactive after the selected time.
The available time periods are 1, 2, 3, 4, 5, 10, 30 minutes and Never.
Reducing CPU Speed
Follow these instructions to reduce the CPU speed.
1.
Tap
CPU Speed.
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2.
Select a lower CPU speed to conserve battery power.
Adjusting the Backlight
This section describes screen settings and how to conserve battery power by adjusting the backlight.
NOTE:
MT380 screen contrast has been preset at the factory for optimum performance.
The backlight for the color display is user-defined. There are two tabs – one for Battery Power and the other for External Power.
1.
Tap
Backlight to adjust the screen brightness.
2.
Set the backlight behavior and drag the On Intensity and Dim Intensity sliders to the desired levels.
Field
Dim Backlight if
Description
Select how many minutes you want to elapse before the backlight dims.
Turn Off Backlight if Select how many minutes you want to elapse before the backlight automatically turns off.
Turn on Backlight Select this option if you want the backlight to turn on when a button is pressed or the touch screen is tapped.
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Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
Chapter 4 Power System
Performing a Hardware Reset
You may have to perform a reset if the device freezes (i.e., device no longer responds to the buttons on the screen).
Performing a Warm Start
A Warm Start is used to reset or re-boot the device without losing data stored in RAM. You would perform a warm start in any of the following situations:
• The terminal fails to respond
• After installing some software applications
• After making changes to certain system settings, such as SD card
CAUTION!
A Warm Start will cause unsaved data to be lost.
Method 1: From WinCE
1.
Tap
Mode.
2.
Tap Warm Boot.
Method 2: From Hardware
1.
Locate the function keys on MT380.
2.
Press F2 and F4 simultaneously.
F2 F4
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Performing a Cold Start
A cold start will erase all data and all programs you have added and will restore the device to the default factory settings. However, data and application programs stored in the Flash Storage will not be deleted.
Never perform a cold start unless a warm start does not correct your problem. When you perform your next ActiveSync operation, you can restore any data that you previously synchronized to your computer or you can restore data that you backed up to a storage card.
You can perform a cold start using the BootMode utility in the operating system, or by pressing the Cold
Boot hardware reset button in the unit.
You would perform a cold start in any of the following situations.
• Reset the operating system
• Restore the terminal back to factory defaults
• Reset the terminal after a boot loader, keyboard and kernel upgrade.
CAUTION!
A cold start erases all data and installed applications in RAM memory.
Method 1: From WinCE
1.
Tap
Mode.
2.
Tap Cold Boot.
Method 2: From Hardware
1.
Locate the cold start button on rear MT380.
2.
Lightly press the tip of stylus to the cold start button.
Cold Start
Button
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Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
