User's Manual

CAS GPS Node User Manual
CAS GPS User Manual (DOCU0097) A Page 8 of 24
9 Operation
9.1 Principle of Operation
The CAS-GPS Intelligent multi-purpose node comprises of a high performance GPS receiver, Vehicle to Vehicle (V2V)
radio transceiver, high accuracy Ranging RF transceiver, CAN bus, RS-232 / RS-485 communications, Digital Input (2) /
Output (1), Bluetooth
®
wireless technology and internal battery that is available in the following configurations:
1. Light Vehicle roof unit (fixed configuration) – unit communicates with the Display Unit in the Operator’s cabin via a
fixed cable using RS232 communications. The roof unit is powered from the vehicle battery which also serves to
charge the optional internal back-up battery.
2. Light Vehicle roof unit (portable configuration) – magnetic base unit which communicates with the Display Unit in
the Operator’s cabin via Bluetooth
®
wireless technology. The roof unit is battery powered. Suited to Light Vehicle
portable installations deployed on a daily basis.
3. Light Vehicle Fixed Expandable Installation Node – same operation as “Light Vehicle roof unit (fixed configuration)”
with the addition of extra connections for downstream use of Light Vehicle Fixed Node unit for additional accuracy.
4. Self-Test – fixed unit that enables automatic real-time functional health monitoring of a primary CAS-GPS/RF
system on a vehicle without the requirement for a remote Test Station or operator interaction. Communicates with
the In-Vehicle-Unit (IVU) or Light Vehicle Display Unit. Suited to Light or Heavy vehicle installations.
5. Boomgate – unit which communicates with machines via V2V radio and operates a boomgate via contacts.
Typical Light Vehicle Topology