User's Manual

Table Of Contents
20
Network Connection Status LED
The normal state of the Red Network Connection Status LED is Off when there are no network connection issues present.
This LED will activate when there is an issue with either the Ethernet or the GPRS network connection. This LED will be trig-
gered:
If the physical Ethernet cable is not connected
If the DHCP configuration fails
If the unit fails to get an IP address from the GPRS network
When the GPRS connection has been reset
Signal Strength LEDs
The two Green signal strength LEDs are used to display the radio’s signal strength. Green 1 , Green 2 .
NOTE: If during installation the radio signal strength weakens, the unit must be relocated. Should relocation of
the unit be insufficient in improving the radio signal strength, an antenna extension may be added.
Adding an Antenna Extension
In the case of poor signal strength, an Antenna Extension Bracket kit may be required to rectify it. Take the following steps to
install an antenna extension kit:
1. Turn off the power to the Communicator by physically unplugging the unit from its power supply.
2. Attach one end of the extension cable to the Communicator and the other end to the antenna itself.
3. Reattach the power supply and turn on.
4. Move the antenna around until you have received a strong signal.
5. Mount the antenna bracket at that location.
Hardware Default Jumper
You can reset the hardware options for the Communicator. Reasons for doing so could include, but are not restricted to, a change of
the central station IP address, or a system malfunction without obvious causes. Take the following steps to reset your Communica-
tors hardware options to their default settings.
1. Locate the set of five vertically aligned pins in the middle of the Communicator board.
2. Counting from the bottom, the first three pins are reserved for future use. You may discount these.
3. The final two pins require a jumper in order to reset the hardware values.
4. Turn off power to the Communicator.
Table 4: Radio Signal Strength
Signal Strength Description db Levels Response
None Green1 - Off; Green2 - Off; Yellow - On -100db and lower The unit must be relocated
Low Green1 - Flashing; Green2 - Off -99db to -92db Relocate the unit, if possible.
Medium Green1 - On; Green2 - Off -91db to -77db Unit placement is acceptable.
Full Green1 - On; Green2 - On -76db and higher Unit placement is acceptable.