User's Manual

Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide
Copyright Wavenet Technology © October 2003 44 BM310012WT05
Power Profile
The modem’s power consumption profile depends on the usage and the
network configuration of the Power Save protocol.
For example, the following numbers present a typical profile for the
Boomer-III modem based on reasonably heavy usage and assuming a
3.8V supply current: (Power Save Mode = Maximum)
 80 % Sleep @ 4.4 mA typical
 19.9 % Receive @ 76 mA typical
 0.1% Transmit @ 1.6A typical
The actual percentage of total time spent in each state (transmit,
receive, sleep) is a function of the following variables.
Network configuration
On networks supporting Power Save operation, the network
configuration impacts how long the modem must be in the sleep state.
Note: Neither Wavenet nor any developer has any direct control over
the network configuration. Networks supporting Power Save are
typically configured to preserve the battery life of modems of their
subscriber base.
Message traffic model
The message traffic model defines how many messages are transmitted
and received, and the average length of the messages sent and received
in a given working day. For instance, a dispatch application could have
a message traffic model as follows:
 Messages transmitted in 8 hour day: 25
 Average length of transmission: 120 bytes
 Messages received in 8 hour day: 10
 Average length of received message: 30 bytes
This analysis of message traffic allows the power consumption profile
to be assessed in terms of percentage of time spent transmitting,
receiving, and sleeping. (For more information, see Develop a Message
Model on page 12.)
Roaming Time
The amount of time the modem spends scanning a channel or roaming
to a new channel will affect the current consumption.