Jeppesen Nobeltec SSHS, Руководство пользователя

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Solid State Heading Sensor (SSHS) Owner’s Manual
36
PGN 126208 – NMEA Request Group Function – Transmission Periodic Rate
This PGN will enable or disable the periodic transmission of specific PGNs.
Field 1:
Complex Command Group Function Code (8 bits) – set this field’s value to 0x00,
which denotes a request PGN.
2:
Requested PGN (24 bits) – set this field’s value to the corresponding PGN for which
you wish to change the periodic rate.
3:
Transmission Interval (32 bits) – set this field’s value to 0x0 to disable the periodic
transmission of the PGN identified in field 2 above. Otherwise, program in the default
periodic rate to restore periodic transmission of the PGN identified in field 2 above. The
resolution of this field is 1 millisecond.
4:
Transmission Interval Offset (16 bits) – set this field’s value to 0xFFFF; all other values
will cause the request to be rejected.
5:
Number of Pairs of Commanded Parameters to Follow (8 bits) – set this field’s value to
0x0. SSHS NMEA 2000 Initiated Deviation Calibration NMEA 2000 initiated deviation
calibration is accomplished by turning the vessel through at least 3 complete circles after
the SSHS receives a Manufacturer’s proprietary NMEA 2000 PGN. The procedure is as
follows:
1. Ensure that the compass has been properly installed per Section 0.
2. Warm up the compass by operating it for approximately 10 minutes.
3. Turn the vessel (either direction) such that you complete a full 360° turn in 2½ minutes
or less (try not to go below 1 minute for a complete circle).
4. Send the following NMEA 2000 PGN to the SSHS while continuing to turn the vessel:
•
PGN 126208 – NMEA Command Group Function – Manufacturer’s
proprietary
Reset. This will initiate a reset and force the SSHS to start the calibration
process.
5. Continue turning the vessel through at least 3 circles until you see one of the following
Manufacturer’s proprietary NMEA 2000 PGNs:
•
PGN 126270 – Manufacturer’s proprietary Slave Response – Deviation
Calibration Successfully Completed.
This indicates successful completion of
the deviation calibration process.
•
PGN 126270 – Manufacturer’s proprietary Slave Response – Deviation
Calibration Failed to Complete
. This indicates a failure of the deviation
calibration process.