artisan TRACKPOINT 3 4211A, Operation And Maintenance Manual

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TRACKPOINT 3 OPERATION
3-83
3.7.4.2 “POREB” DATA OUTPUT FORMAT
Applicable To: TP3 Model 4450A & TP3P Model 4430C
Message Name: POREB
Sample;
$POREB,TG,HHMMSSHH,QF,EC,-BRG-,-DA-,--SR--,-SS-,TP,-TELM-*CS
C
R
L
F
$POREB,01,07253784,10,50,075.2,39.1,1572.5,1510,18,0328.4*16
“$POREB” RS-232 PARAMETER DESCRIPTION
TARGET NUMBER: The TARGET NUMBER (#) represents the various target symbols and can
range from 0 to 10. The zero is output when in the self-test mode to indicate that the RS-232 data
is simulated.
TIME: The TIME value is related to the time of signal reception. It is synchronous with the 24-
hour time on the screen of the TrackPoint display. The accuracy of the time as output is within 1
second of the actual time of reply. (In future this will be interfaced to the GPS 1PPS and will be ac-
curate to within approximately 20ms.)
QUALITY FACTOR: The QUALITY FACTOR is a value (1-10) determined by the system on each
reply that is detected. The system uses the phase or time counts from each of the hydrophone
elements to determine the quality of the signal. If the phase counts are consistent on all three
channels throughout the reply burst the quality factor is very high. If the phase counts have jitter
or are inconsistent then the quality factor is low.
ERROR CODE: The ERROR CODE or WARNING CODE is a one- or two- digit error code indicat-
ing that the data received could not be used for a valid position fix, or it can represent a warning to
let an operator know that the position accuracy could be compromised.
TARGET BEARING: The BEARING output in degrees is a relative bearing from the Hydrophone to
the target. The target bearing is corrected for the entered hydrophone offsets, when target is ref-
erenced to the pitch roll center of the vessel or if Antenna Offsets are entered, it is corrected again
to the Antenna offset point.
DEPRESSION ANGLE: The DEPRESSION ANGLE is the angle from the horizon to the point di-
rectly below the hydrophone. It is in degrees.
SLANT RANGE: The SLANT RANGE is the measured travel time between the hydrophone and the
transponder. It is only output in meters. The Slant Range is the actual measured slant range to the