I 1
Northstar 8000i or Simrad GB40 NavComputer Master
I* 1
Northstar 8000i or Simrad GB40 second station
The compass must be NMEA compliant and configured as follows:
•
10 Hz update rate
•
4800 baud
The compass must be able to supply the NMEA 0183 HDT, HDM, and HDG heading sentences (all
other sentence types will be ignored).
Ideally, the compass should draw less than 100 mA. (If this is not possible, power the compass
using a separate 12 V source.)
The NMEA compass may be directly connected to the radar processor through the NMEA/COMMS
port.
Compass data is appended to the radar data by the radar processor and then broadcast over the
network to the 8000i or GB40 displays and other devices. This enables more precise radar chart
overlay and target tracking (MARPA) than is possible by compass connection to other points in the
network or just using GPS
The NMEA compass cable is not supplied but the pinout of the NMEA/COMMS port is shown for
information:
Pin Function
3
NMEA TX+ data
4 NMEA
Ground
5 NMEA
Rx-data
6
NMEA RX+ data
9 Shield
11
12 V Compass Power (100 mA max)
It is recommended that a single compass data source is used for a 8000i or GB40 network.
7.4
Commision the radar using a GB40 or 8000i
¾
tarting up Radar
When commissioning the Navico radar leave the unit on Standby for 20 minutes before
transmitting. This makes sure the magnetron reaches optimum operating temperature
aiding the auto tune function. Normal use afterwards only requires the standard
standby count down.
Select Radar on your OP30 controller or touch screen (8000i),
Radar Mode shows the current radar mode. Select Radar Mode to display an option list:
¾
Transmit
If the radar was in Standby mode, it will start transmitting immediately.
If the radar was Off there will be a pause of 90 - 180 seconds while the radar warms ups
before it starts transmitting.
¾
Standby
This stops transmission, but keeps the radar ready to transmit again.
¾
Off
This saves on power consumption (but you must turn it on and wait for the radar to warm up
before you can use it again).
