18 |
P a g e
DC Input
FMGuard is supplied with 24VDC power adapter. If using user-supplied power supply, observe
voltage polarity and voltage level. FMGuard operates on 24 VDC input but can accept supply
voltage up to 36VDC. Do not exceed the recommended- input voltage, exceeding which will
damage FMGuard.
Ethernet
The RJ-45 connector connects FMGuard to the computer or network using Cat5 UTP cable. For
connection to a single PC, use a Ethernet cable supplied with the unit. A hub or Ethernet switch
is not necessary for direct FMGuard to PC interface. FMGuard can be used as a standalone
system, or connected to the local area network (LAN). A LAN connection gives greater flexibility
as well as enabling FMGuard to work with other networking devices.
Antenna
This SMA connector interfaces the external antenna to the internal GSM modem of FMGuard.
Choose suitable antenna for your installation. The SMA mount Antenna supplied, as standard
accessory is the unity gain antenna. This antenna is suitable for most installation. If the location
has low GSM signal strength, use high gain antenna or outdoor type. Check with your distributor
for suitable antenna alternatives.
Reset Button
The button is located at the front side (lower right) of FMGuard, this button is a combined
reset/diagnostic switch. It is necessary to use a small thin object with a diameter approximately
2mm for this purpose.
By activating the switch shortly, FMGuard will do a power reset, as if the power was removed
and reapplied. If the reset switch is held down for approximately 3 seconds, the device will
instead enter recovery mode and the application will not be restarted. In the recovery mode
the system will automatically turn on the GSM module to establish connection to the GSM
network and server gateway.
Pressing reset will also activate the device when in power down mode. If the external power is
removed and the backup battery is disabled, the reset switch can still be used to boot into
recovery mode, as long as there is enough power left in the battery.
