Power Connector On The Ls300 - Sierra Wireless AirLink LS300 Hardware User's Manual

AirLink LS300 Hardware User Guide
Table 3-2: Power Connector Pin Description
Pin Name
Cable Wire Color
1 Power
2 GND
22
Power Supply Conditioning
For automotive applications, the supply voltage may momentarily drop below 7 V
during engine cranking, causing the LS300 to reboot. If this happens, the LS300
restarts automatically and is ready for use once the reboot is complete. If your
application requires the LS300 to continue operating during engine cranking, add
external power conditioning circuits to ensure the supply voltage does not drop
below the rated value (7.0 V).
Grounding the LS300
For DC installations (with a fixed "system" ground reference) Sierra Wireless
recommends always grounding the LS300 chassis to this system ground
reference. To ensure a good grounding reference, use a short wire with a gauge
of 18 AWG or larger connected to one of the mounting screws.

Power Connector on the LS300

The following diagram shows the power connector pins.
Figure 3-4: LS300 Power Connector Pins
Associated DC Description
Red Main power supply for device
Black Main device ground
Pin 4 (GP I/O)
Pin 2 (Ground)
Pin 3 (Ignition sense)
Pin 1 (Power)
Type
PWR
PWR
4112895