Using the External Computer Data Link MicronNav System
0656-SOM-00001-07 114 © Tritech International Ltd.
7.2.4. Simrad HPR 300P
This 3rd party output string is taken from the Simrad HPR positioning system. The string has
48 characters and the format is ASCII fixed field with space separators. Leading 0’s (except
time) are space filled. 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. For
values greater than 999.9, the decimal point is removed (e.g. 1001.1 is output as “1001”).
The full string format is as follows:
‘HPR 300P’ Reply Data Structure
Data Description Data Range Field Range
Beacon / Unit ID (0 = Responder, 1..15 =
Transponder, 19=INS)
0 to 19 ii
Transducer Number Always 1 H
Beam Always ‘W’ B
Status ‘ OK’ (No error)
or
‘NRY’ (No reply)
SSS
Compass heading (degrees) 0 to 359.9 ccc.c
X (or Easting) 0 to 999999 xxxx.x (or xxxxxx)
Y (or Northing) 0 to 999999 yyyy.y (or yyyyyy)
Z (or Depth) 0 to 999999 zzzz.z (or zzzzzz)
Quality Flag, unused Always 0.0 QQ.Q
(Carriage Return + Line Feed) N/A <CR><LF>
Example:
GPS is active so co-ordinates are World. Unit ID = 0 (Responder), Compass Heading = 119.5º, X
Co-ord (East) of 339080, Y Co-ord (North) of 497512, Z Co-ord (Depth) of 13.7m, No Error.
ASCII Output Always = “0**1**W***OK**119.5*339080*497512***13.7***0.0<CR><LF>”
Where; “*” is a space (ASCII code 32), “<CR>” is Carriage Return (ASCII code 13),“<LF>” is Line
Feed (ASCII code 10).
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