User guide

AirLink GX Series User Guide
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Option 1 – If you want the device turned on and off when the engine is
turned on and off:
· Connect pin 3 to the ignition
· In ALEOS, disable the Low Power Mode (Default setting is disabled)
Option 2 – If you power the device from the engine’s battery and you do not
want the device to drain it when the engine is turned off:
· Connect pin 3 to the ignition
· In ALEOS, enable the Low Power Mode and set a time delay
When the ignition is turned off, the device operates at full power for the pro-
grammed time delay. When it expires, the device switches to Low Power Mode
(consumes 35mA or less). The device resumes normal operation when the
ignition is turned on.
Option 3 – If you want the device to switch into low power mode when the
engine battery voltage drops below a certain value:
· Connect pin 3 to pin 1
· In ALEOS, configure the Low Power Mode with a voltage level threshold
The device operates normally until the battery voltage drops below the thresh-
old value, triggering the Low Power Mode. The device resumes normal opera-
tion when the battery voltage rises above the threshold value.
Option 4 – If you use a separate battery other than the engine’s for device
power, (such as in an ambulance or other application that has a stand-alone
battery power system) but it isn't connected to an ignition or an on/off
switch, and you do not want the battery drained:
· Connect pin 3 to pin 1
· In ALEOS, configure the Low Power Mode with a voltage level threshold
The device operates normally until the battery voltage drops below the thresh-
old value, triggering the Low Power Mode. The device resumes normal opera-
tion when the battery voltage rises above the threshold value.
Option 5 – If you have an installation where the device uses line power such
as in a store or a remote site where power saving isn’t needed:
· Use the Sierra Wireless AC adapter or connect pin 3 to pin 1
· In ALEOS, disable the Low Power Mode. (Default setting is disabled)
The device is on for as long as the power is on.
Note: For details on how to use ALEOS, see the ALEOS Configuration User Guide. It is
available for downloading from the Sierra Wireless support web site.
Pin 4
This pin is a digital input/output (green wire on DC cable).
Pin 4 either:
• Monitors inputs and outputs
• Drives a relay