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PRO 4

VideoRay Cockpit Guide - Control Bar - User Settings - Data Export

Data Export

Data Export can be used to send VideoRay Cockpit and ROV data to other applications.

Data Export sends data as NMEA* formatted text strings and supports four different types of output strings:

  1. Depth ($DPT)
  2. Heading ($HDG)
  3. Water Temperature ($MTW)
  4. Time, Depth, Heading, Pitch, Roll ($PVRND)

Data Export sends data to a COM port. Either a physical COM port or virtual COM port can be used. Virtual COM ports can be used to allow two programs on the same machine to talk to each other. An example might be to have VideoRay Cockpit send the ROV Depth to a program that could log and/or graph the depth profile of the mission. See the Application Integration section for more information about virtual COM ports.

To use Data Export, you must configure the data type, Baud rate and frequency of output (Maximum Rate) and then select the port to which you want to export data.

To save data to a file, you can use a terminal emulation program, such as or Tera Term or PuTTY, as the receiving application and save the session data to a log file.

Data Export Format

The prototypical format conforms to NMEA standards and can be expressed in general terms as:

$IDSEN,DD,DD,...*CS<CR><LF>

SegmentInformation Represented
$Start
IDTalker Identifier, which is "VR"
SENSentence Type, which defines the type of data in the string
DD,DD,...Data field(s), fields are separated by commas
*Separator
CSChecksum
<CR>Carriage Return
<LF>Line Feed

Example Output

Depth - $VRDPT,d.d,o.o*cs

SegmentInformation Represented
d.dDepth in meters
o.oTransducer offset (set to zero)
Positive means distance from transducer to water line
Negative means distance from transducer to keel
csChecksum

Heading - $VRHDG,h.h,d.d,a,v.v,b*cs

SegmentInformation Represented
h.hMagnetic sensor heading in degrees
d.dMagnetic deviation in degrees
aMagnetic deviation direction, E = Easterly, W = Westerly
v.vMagnetic variation in degrees
bMagnetic variation direction, E = Easterly, W = Westerly
csChecksum

Water Temperature - $VRMTW,x.x,u*cs

SegmentInformation Represented
x.xDegrees
uUnit of measurement
csChecksum

ROV Attitude - $PVRND,mm/dd/yyyy,hh:mm:ss.s,d.d,h.h,p.p.r.r*cs

SegmentInformation Represented
mm/dd/yyyyMonth/Day/Year
hh:mm:ss.sHours:Minutes:Seconds (UTC)
d.dDepth in meters
h.hMagnetic sensor heading in degrees
p.pPitch in degrees
r.rRoll in degrees
csChecksum

You can select more than one output string. Each string will be written in sequence.

You can select more than one COM port and export to several applications simultaneously.

* - For more information about NMEA and NMEA data standards, see http://www.nmea.org or http://www.tronico.fi/OH6NT/docs/NMEA0183.pdf.


Version: 1.07.00