Dynascan Manual (RT3005G) v_0611
Page 18
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Issue 1
The system requires an input voltage between 10 – 36 VDC rated at 25 Watts and the
Interface Adapter is reverse polarity protected. A cigarette lighter connection is supplied for
convenience but if the system is permanently fitted it is recommended to remove the
connector and terminate directly to a power supply or battery. The cigarette lighter
connector shows a red LED when power is available at the socket.
The laptop can run for approximately 4 hours on its internal battery. If this is insufficient an
inverter can be used, connected to the vehicle / vessel battery, or a suitable power supply
installed, to power the computer.
7.3
RTK / VRS corrections
RTK or VRS corrections can be sent to the pod GNSS receiver via the radio inside the pod or
via the VRS cable supplied with the Dynascan system.
7.3.1
RTK radio inside pod
If using RTK corrections you will need to set up the RTK base station and Dynascan pod radio
to be compatible with one another. You can program the Pod radio from the laptop
computer, as shown in section 10.2 RTK Radio programming. Remember to leave the RTK
cable connected to the IA when working even though it is not terminated at the other end.
7.3.2
RTK radio built into GNSS receiver
When using a GNSS receiver with combined RTK radio module you do not need to use the
RTK cable at all. The internal radio is programmed through the GNSS software and the RTK
cable is not required (see section
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).
7.3.3
VRS corrections
If using VRS corrections you must set up the mobile VRS equipment to provide a CMR+
message at 38400 baud with 8 data bits NO parity and 1 stop bit. The 9 pin D type connector
on the end of the VRS cable, which is connected to the IA, should be connected to the
output of the VRS equipment. When using your own RTK mobile radio receiver, instead of the
internal pod radio, you should also use the VRS cable. Some Dynascan systems may offer the
choice of changing the parameters for this input by using the LEMO serial input on the GNSS
software (see section
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).
7.4
Powering up
Before applying power to the system ensure the pod is in a position to receive adequate
satellites, in a relatively clear sky area. When the cables are connected, and you are ready
to use the system, start the vehicle engine before switching on the power to the IA and
ensure the green LED illuminates. The reason for starting the engine first is that the starter
motor will cause the voltage to drop, which will have an adverse effect on the system.
