Using the External Computer Data Link MicronNav System
0656-SOM-00001-07 123 © Tritech International Ltd.
7.2.10. $PSIMSSB
This 3rd party output string is taken from the Simrad HiPAP positioning system. The string is
variable length ASCII with comma field separators. X,Y,Z co-ordinate positions are relative
values unless GPS is active in which case the co-ordinate outputs become Easting, Northing
and Depth respectively.
The full string format is as follows:
‘$PSIMSSB’ Reply Data Structure
Data Description Data Range Field Range
NMEA string header Always ‘$PSIMSSB’ hhhhhhhh
Comma separator Always ‘,’ ,
Time of data (UTC time) 000000.00 to 235959.99 hhmmss.ss
Comma separator Always ‘,’ ,
Beacon/Target ID (0 = Responder, 1..15 =
Transponder, 19=INS)
B00 to B99 ccc
Comma separator Always ‘,’ ,
Target Status ‘A’ = Okay, ‘V’ = Not Okay A
Comma separator Always ‘,’ ,
Error Code, left empty Always blank
Comma separator Always ‘,’ ,
Coordinate system ‘C’ = Relative Cartesian, 'U'
= Absolute UTM
A
Comma separator Always ‘,’ ,
Orientation ‘H’ for Heading up & ‘N’
for North up (both when
output is Relative XY), ‘E’
for Easting, Northing (when
in Absolute UTM format)
A
Comma separator Always ‘,’ ,
SW Filter ‘M’ for Measured, ‘F’ for
Filtered
A
Comma separator Always ‘,’ ,
X (or Easting) 0 to 999999 x.x
Comma separator Always ‘,’ ,
Y (or Northing) 0 to 999999 y.y
Comma separator Always ‘,’ ,
Z (or Depth) 0 to 999999 z.z
Comma separator Always ‘,’ ,
Expected Accuracy, unused Always 0.0 q.q
Comma separator Always ‘,’ ,
Additional information Always ‘N’ A
Comma separator Always ‘,’ ,
1st Additional value Always blank
Comma separator Always ‘,’ ,
2nd Additional value Always blank