Lantronix FOX3-2G Series, Руководство по оборудованию, Страница: 48 / 51

Appendix
FOX3-2G/3G/4G Series Hardware Manual 48
9. Appendix
9.1. Schematics
The figure below illustrates a common schematic of how to install the FOX3-2G/3G/4G devices in
the vehicle. For detailed information, refer to the related documents
[AppNotes_AVL_Installation_Guide.pdf].
9.1.1. Installation guidance
W hen installing the FOX3-2G/3G/4G in a vehicle, you will be able to track and locate the vehicle all
the time and also you will be automatically notified when disagreements with your stored
configuration into the FOX3-2G/3G/4G device are occurred. Depending on the user requirements,
the operator may program the digital outputs to activate something e.g. a relay, buzzer, turn on a
lamp, etc. The digital inputs can individually be configured e.g. to detect something when it is
opened or closed; changes on digital inputs may trigger an output to activate, for example, a relay or
buzzer. The IGN line can be connected to the vehicle ignition key to monitor its ON/OFF position.
Note: Turn the car ignition off before making any connection. Use a common ground point for
all device ground pins. To avoid ground loops and second grounds, isolate all grounded pins of the
FOX3-2G/3G/4G from the vehicle body. Do not connect power from a different system to the
FOX3-2G/3G/4G.
The outputs of the FOX3-2G/3G/4G devices must be supplied with the same voltage applied to the
(+IN) pin. The operating voltage MUST never exceed its range, due to the device is not protected
again continuous overvoltage. For security reasons, it is recommended to integrate an external 2A
fuse between the positive wire of the FOX3-2G/3G/4G (+IN) and d.c. - power source.
When using an external antenna, be sure to mount it on the dash or on the windshield of the
vehicle with the GPS side facing the sky.
Apply power to the FOX3-2G/3G/4G devices only with external antenna connected (if used) and
vehicle ignition off. First, connect the GND pin and finally, apply power to the +IN pin of the FOX3-
2G/3G/4G.
Figure 29: Schematic example of installation guidance.
9.2. What should be considered when using FOX3-2G/3G/4G device
FOX3-2G/3G/4G are devices controlled by means of the PFAL commands which are developed by us.
These PFAL commands can be executed when the operating firmware inside the device is running. In
order to create application with the FOX3-2G/3G/4G devices and to obtain maximum benefit from