Syqwest HydroBox, Инструкция по установке, эксплуатации и обслуживанию

Страница: 45 / 54

HYDROBOX
™
Operations and Maintenance Manual
OPERATION 3-15
©
2006 SyQwest Incorporated
3.4 Data Outputs
This section lists the various data output formats available from the Data I/O at the HydroBox. This
section provides more detailed, information for each format (sentence) to allow the user to interface with
external peripheral devices Hardware pin-out connections are shown in Figure 2-7
3.4.1 ODEC Depth (dpt) Format
Sample data strings
$SDODC,00:00:00,N33.43.7300,W118.15.7300,B,0.0,M,V
$SDODC,11:18:00,N33.43.9400,W118.15.9400,B,20.4,F,A
This data output string is ODEC’s comma delimited proprietary format containing Time and Position
(from a GPS device), true depth, and depth status. This format is depicted below:
$ S D O D C , h h : m m : s s , a y y . y y . y y y y , o x x . x x . x x x x , f , x x x x . x , u , v
<CR><LF>
Where h h = UTC Hours m m = UTC Minutes s s = UTC Seconds
a = N / S Latitude y y . y y . y y y y = Latitude Degrees, Minutes, Decimal Minutes
o = W / E Longitude x x . x x . x x x x = Longitude Degrees, Minutes, Decimal Minutes
f = Depth Frequency (A = Low Frequency or Only Frequency, B = High Frequency)
x x x x . x = True Depth u = Units (M = Meters, F = Feet) v = Depth Status (A = Valid, V = Invalid)
3.4.2 PMC Depth (dt) Format
Sample data strings
FDT L 11.1 FT EDT H 0.0 FT DT H 21.0 FT DT L 11.1 FT
Proprietary depth output string. Format described below.
Single Frequency Operation Dual Frequency Operation
_D T_ _ x x x x . x _FT <CR><LF> _D T_f _ x x x x . x _FT <CR><LF> (English mode)
_D T_ _ x x x . x x _MT <CR><LF> _D T_f _ x x x . x x _MT <CR><LF> (Metric mode)
During normal operation the "space" in front of the "D" will be blank; An "E" in this space indicates an
error such as lost bottom while an "F" indicates a Fix Mark. The second character after the “T”,
represented above by an
f , indicates which frequency return the depth value applies to. “H” indicates a
High frequency depth, and “L” indicates a Low frequency depth.
3.4.3 NMEA Depth Below Transducer (dbt) format
Sample data strings
$SDDBT, 11.1,f, 3.4,M, 1.9,F $SDDBT, 21.0,f, 6.4,M, 3.5,F
Industry standard NMEA 0183 string. Water depth referenced to the transducer. Format described below.
$ S D D B T , x x x x . x , f , x x x . x x, M , x x x . x , F <CR><LF>
Where x x x x . x = feet (f) x x x . x x = meters (M) x x x . x = fathoms (F)