1. Electromagnetic Interference (EMI) is generated by switching circuitry closets or Un-interruptable Power
Source (UPS) systems found near computer rooms and can block the radio signal.
2. Look for significant sources of electromagnetic radiation. The problem may emanate from a source between
location and the radio base station.
When to use landline communication
If the tips above do not improve radio signal strength, switch to landline communication. Switching to landline
communication is faster than searching for and trying to improve the radio signal.
PC Card Radios
Your Duo-Touch II supports the following PC Card radio technologies:
•
EDGE/HSDPA/HSUPA
•
1x E-V-DO Rev 0, Rev A
User accessible PCMCIA bay for PC Card radios*
It is the responsibility of the customer to verify that all appropriate agency approvals
have been met with the regard of there radio. General Dynamics-Itronix make no
performance representations, warranties or guarantees, either express or implied,
oral or written, with respect to the customer installed radio.
Operating with Battery Power
The Duo-Touch II uses Dynamic Power Management ( DPM ) so you can reduce the amount of energy used,
especially during periods of inactivity. It is powered by a smart Li-ION battery pack. A CMOS coin battery
maintains the Real Time Clock and CMOS memory. There is also an optional
second external battery pack
that
effectively doubles your battery powered runtime.
Battery Installation and Replacement
Over time, the battery’s capacity gradually decreases. We recommend that you replace your battery when you notice
that it begins to store significantly less charge. Change the main battery pack as follows (you may want to print this
topic for reference).
CAUTION
The Duo-Touch II battery and unit are only weather sealed when the battery is properly installed and
the battery door is closed. Shelter the computer when you install or replace the battery. To prevent damage when
the unit is in use, keep the battery door closed with all screws in place and secured tightly.
Installing the Battery
Page 25 of 57
Duo-Touch II Help
2/28/2008
file://C:\Documents and Settings\harwoodm\Local Settings\Temp\~hh5E31.htm
