Unitech HT630 User Manual

Chapter 2
Power System
2.1 Power System
Main Power
The terminal is operated by a rechargeable, 3.7V 900mAH rated Li-Ion, battery pack. The main battery
should be sufficient for daily operation up to 12 hours. (Base on 5 scan per second) However, since the actual
operation may be varied, it is possible to get the shorter result than our standard operation hours.
Backup Power
An onboard Lithium battery is used as the secondary power source to back up the data; the RTC (real time
clock chip) and RAM memory to prevent data-loss free environment.
Normally, the HT630 gets power from main power source to back-up RTC and RAM; also puts the Lithium
battery in standby state. When the main power source is removed or below the level to back-up the RAM and
RTC properly, the power circuit of the HT630 automatically switches to the Lithium battery for back-up. It is
recommended that the main battery can be always placed inside the unit with enough capacity for back-up
purpose in which case the Lithium battery can supply the power for up to half year before consuming all its
capacity up.
It is important to know that once the power in the backup battery used up, all data within the terminal will be
lost. So it is very important to backup all data when replacing backup battery.
2.2 Power Low Indication
Main Battery
When the main power source reaches the battery low condition, a warning message as
right icon will be shown on the LCD when the HT630 is powered on or a battery low
icon sign will emerge on the right side of the LCD.
When the main battery low occurs, the main battery can continue to supply power for
about 20 ~ 40 minutes per scan /5 second; however, the unit may reach the system
power cutoff point and automatically turn it off. Meanwhile, the unit continues to back up the data contents
in RTC and RAM; it cannot be powered up until the batteries have been recharged or replaced.
! WARNING!
MAIN BATTERY
VOLTAGE LOW
Lithium Backup Battery
! WARNING!
Backup BATTERY LOW
When the Lithium backup battery doesn't have enough capacity to back up the
system, the message as right icon will be shown on LCD when the unit is powered
on. In this situation you should upload your data from the terminal immediately
and replace a new Lithium battery.
Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
8

Unitech HT630 Specifications

General

Display diagonal	- \
Display resolution	128 x 64 pixels
Display number of colors	Monochrome
ROM capacity	0.256 MB
Internal memory	0.0005 GB
Internal memory type	RAM
Compatible memory cards	Not supported
Maximum internal memory	4.5 MB
Processor family	-
Processor frequency	0.8 GHz
Interface	RS-232
Storage temperature (T-T)	0 - 50 °C
Operating temperature (T-T)	-20 - 70 °C
Operating relative humidity (H-H)	5 - 95 %
Battery capacity	120 mAh
Battery life (max)	12 h
Battery recharge time (off)	2.5 h
Certification	BSMI, CCC, CE, FCC, VCCI, RoHS
Product color	Blue
Barcode reader	Yes
Keyboard layout	Alphanumeric
Keypad number of keys	27

Weight and Dimensions

Depth	35.1 mm
Width	67.1 mm
Height	167.64 mm
Weight	243.81 g