10
Automatic Calibration Inhibit
The manoeuvres involved in carrying out the automatic calibration are selected in order to make
accidental re-calibration very unlikely. Even if this should occur, this represents no real inconvenience
to the navigator, but where ship operating regulations demand it, the calibration may be inhibited by
disconnecting the brown wire from the compass at the junction box , cutting it back and insulating it.
This facility is only available with installations using a junction box.
Manual Initiation of Calibration
Should a calibration run be required with the junction box wiring modified as described in the
Automatic Calibration Paragraph, prepare to make the run as for an Automatic Calibration, and then
connect a wire between the brown and black terminals as indicated by the dotted line in the wiring
diagram for ten seconds. The procedure described in the Automatic Calibration procedure can then be
performed.
TECHNICAL DATA
The main output from the Super Halcyon 3 can be connected directly with the B&G Hercules system.
It can also drive the analogue repeater compass directly.
Three other outputs are available from the standard compass (386-00-009) to interface with a wide
range of autopilots, radars, position fixers, computers etc.
(a) A three-wire analogue output, 2.5 ref/sine/cosine.
(b) A digital output which can be configured to N+1 format, or to 1/6
°
step Gray Code format (gyro).
(c) An NMEA interface which can also be used with the RS232 port of a computer.
For the latest information on interfacing, please contact your nearest B&G service agent. The Output
configuration of your compass is indicated by a code on a label attached to the sensor unit.
Output
Standard
Setting
Code
3-Wire Sine/Cosine
With Internal 2.5V Ref.
With External 2.5V Ref.
I
E
Digital Output:
Stepper
N+1
Open Collector
5V
S
N
C
5
NMEA Sentence Output:
$HCDM
$HCHSC
$HCVHW
M
C
W
Damping:
0.3 – 99 Seconds
0.3
