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TAM-242/252/262 Installation and Operating Manual
The TAM-242 incorporates a Light Emitting Diode (LED) which indicates the unit's status. During
normal operations the LED intermittently flashes when the terminal is either transmitting a message
or awaiting receipt of one. Once the terminal returns to "sleep" mode, the LED will cease flashing.
During charging the LED will indicate the charge status of the battery. See Operational Status on
page 10 for a description of the LED functions.
Battery Pack
The battery pack is a rechargeable sealed unit. The operational time of the unit before requiring
recharging will be affected by the reporting interval between position reports. The remaining battery
capacity is calculated internally and the terminal will send a report that includes the status of the
battery with every position report. A Low Battery status will be activated when the remaining capacity
has fallen below 10% +/- 5%.
The table below gives some approximate life expectancies with the supplied battery; these do not
include the age of the battery and the effect of temperature on the battery and are provided only as
guidance for the user:
Caution: Before recharging the unit ensure that the key switch is in the "off" position. See Charging
the Battery on page 12 for more information.
Reporting Interval
The Reporting Interval is the time between position reports, providing the GPS position of the asset,
as well as other information such as battery status. Changing the reporting interval will affect the
operational time between charges.
Switch On Reporting
Every time that the key switch is used to switch on the TAM-242, a position report will be sent to
confirm correct operation, provided that the terminal can see the sky within 10 minutes of the power
being applied. Position reporting will then continue at the programmed reporting interval.
Receive Window
After each routine position report, the terminal will enter "sleep" mode to conserve battery power. It
will be unable to receive messages during this mode.
The terminal will "wake" up each day at approximately 1045 hrs UTC to enable it to receive any
messages sent from the application.
Battery Low Threshold
The Battery Low alarm occurs typically when the battery reaches 10% +/- 5% charge capacity.
This document contains information that is proprietary and confidential to EMS Global Tracking (one or more of the following: EMS Global Tracking Ltd and EMS Technologies
Canada, Ltd), and is supplied on the express condition that it is not to be used for any purpose other than the purpose for which it was issued, nor is it to be copied or
communicated in whole or in part, to any third party other than the recipient organization, without the prior written permission of EMS Global Tracking.
MAN-0059 Issue 4
Reporting Interval
15 minutes
1 hour
6 hours
© 2011 EMS Global Tracking Ltd, EMS Technologies Canada Ltd.
Lifetime
up to 4 weeks
up to 10 weeks
up to 6 months
Introduction
3 of 17
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