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Troubleshooting
Nothing is working and my GPS receiver does not acquire lock
Complete the following steps, in order:
Check that there are no obstructions (e.g. buildings, trees or tunnels) around or above the installation;
move to another location as necessary.
Isolate any internal jamming sources; switch off all other electronic devices.
Check all cable connections for damage, excessive bending and that they are correctly secured.
Check that the GPS receiver functions correctly when connected directly to ONE antenna, without
GPSdome connected. Repeat with the other antenna. If both antennas are confirmed as OK, then
reconnect GPSdome.
Check that the antennas are connected to GPSdome ‘P’ and ‘A’ connectors, and that the SMA
connectors are tightened.
Check that the GPSdome ‘R’ connector is connected to the GPS receiver, and that the SMA
connectors are tightened at both ends.
Check that 3-12V power is connected to GPSdome 1.01 from the receiver and the receiver is capable
of providing the required current or, for GPSdome 1.01-DF, the red and black wires are connected
properly to an applicable power source (red to + 3-32VDC and black to common/GND).
Check that the green LED is ON when an active GPS receiver is connected.
Jammer Rejection Performance is Poor
There are many factors that determine how well GPSdome performs, including:
Being in an environment where signals are blocked.
GPS receivers are slow to lock when moving, so it may help to wait for a good signal before driving
off.
The properties of the jamming source (power, waveform, direction).
The type of GPS receiver being used.
The GPSdome installation may be incorrect:
oIf only one antenna is connected properly, GPS will be available but anti-jamming capability
will be disabled.
oIf the antennas are not > 10cm apart, the anti-jamming capabilities will be very poor.
oIf both antennas are not installed on a levelled surface, the anti-jamming capabilities will be
very poor.
The distance between GPSdome and any jamming sources (the bigger the better).
The number of jamming sources.
oGPSdome 1.01/1.01-DF is designed to protect from a single jamming direction.
The propagation environment (open field, in-vehicle, urban, etc.).
Help and Support
InfiniDome's help and support contact details are listed below:
Phone: +972 (0)4 770 7700
