Specifications

Tritech International Ltd SeaKing System Options OM
Issue 3 TIL – Eng – Spec – 040 Page 25 of 44
3. MB1000/HB200 String Format
This format provides a string format that is identical to the standard MB1000/HB200 string format.
The following serial data formats are configurable on the UK94 surface unit:
a) 4800 baud, 8 data bits, 2 stop bit, no parity.
b) 9600 baud, 8 data bits, 2 stop bit, no parity.
[These may need to be configured on the SCU to replicate a UK94 output if the receiving terminal
expects this data format]
MB1000/HB200 - Reply Data Structure
Data Description Data Range Field Range
Depth in metres (includes entered vertical or zero offsets) 0 to 999.99 Dxxx.xx
Space character N/A

Altitude in metres (includes entered vertical offset) 0 to 99.99 Axx.xx
Space character N/A

Temperature in degrees Centigrade 0 to 35 Txx
Space character N/A

Atmospheric pressure in mbar (either manually entered
value or obtained from the surface Barometric sensor)
900 to 1100 Pxxxx.x
Space character N/A

Velocity of Sound in metres per second (calculated from
Conductivity readings or ‘Manual’ VOS if no CT probe)
1400 to 1550 Vxxxx.x
Space character N/A

Mean density of seawater (or Manual entered value if no
CT probe readings)
.9 to 1.1 dx.xxxx
Terminator (Carriage Return + Line Feed) N/A <CR><LF>
Example:
Depth = 136.92 metres = D136.92
Altimeter reading = 24.75 metres = A24.75
Temperature reading = 5 degrees C = T05
Atmospheric Pressure = 1004 mbar = P1004.0
Velocity of Sound = 1475 m/s = V1475.0
Relative Seawater Density = 1.019 = d1.0190
ASCII Output Always =
“D136.92A24.75T05P1004.0V1475.0d1.0190<CR><LF>”
Where; “” is a space (ASCII code 32),
“<CR>” is Carriage Return (ASCII code 13),
“<LF>” is Line Feed (ASCII code 10).
IMPORTANT NOTE: If a depth of greater than 999.99m is produced, the depth field is extended to
“Dxxxx.xx”. This is different from the UK94 system which at >999.99m outputs Dxxx.xx to indicate
over range.