User's Manual

Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide
Copyright Wavenet Technology © October 2003 54 BM310012WT04
Messaging model
To determine the required battery capacity for your product, you need
to define the messaging model for your target market. In regard to
battery selection, the messaging model details the following
information:
 Optimal number of hours per day of use prior to recharging the
battery
 Number of messages transmitted per hour
 Number of messages received per hour
 Average length of transmitted messages
Using this information and the typical current drains of the modem and
other circuitry present in your product, you can define the requirements
for battery supply voltage and capacity.
Battery Recharging
Plug-in Supplies
A mains plug-in supply must be designed to ensure that voltage spikes,
lightening and other power fluctuations cannot damage the Boomer-III.
Transient voltage protection zener diodes or other spike arrestor
circuits may be added to keep the inputs within the power requirements
mentioned previously. These should have a value of 20V and be placed
on the supply side of the regulator circuit.
Automotive Supplies
Extra protection is required from an automotive supply to protect the
Boomer-III OEM Modem from power fluctuations when used in an
automobile.
The electrical transient conditions (e.g. battery jump start), may
damage the modem if not adequately clamped and filtered.
Environmental Considerations
The environmental requirements of the Boomer-III OEM Modem are
as follows:
These limits should not be exceeded in the intended application.
Operating Temperature: -30° to +60°C
Storage Temperature: -40° to +70°C
Relative Humidity 0 to 95% non-condensing