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1.
Direct from a GPS Antenna to indicate the position of the operating station (this would be for the topside
location, not the ROV position, and can be used from a boat when only an approximate position of the
ROV is required).
To read and display position data from a GPS antenna, connect the antenna to the computer and
determine the port on which it is recognized. Then, in the Data Import window, click on the expand
arrow on the right hand side for that port number. Select the data type from the pull down selection
(Other Platform Position), and then set the baud rate to match the device (typically 4800). The data
stream should start to display in the area on the right and the position should be displayed on the
video as overlay text.
2.
From a positioning system that supports COM port output of the ROV location. For this example, we will
use the KCF Smart Tether and the virtual COM port pair 31 and 32.
To read and display position data from the Smart Tether, connect the Smart Tether and begin
operation as normal. From the Smart Tether software menu, select "Tools->Communication
Settings". Select the desired COM port for output. Typically, this will be a virtual COM port. Select
Port 31, and set the Baud rate to 4800. Check the Enable Real Time Output and click the OK
button to close the Settings window. Next, in VideoRay Cockpit, click on the User Settings icon in
the Control Bar, and then click on the Data Import tab. Click on the expand arrow on the right hand
side for COM port 32. Select the data type from the pull down selection (ROV Position), and then
set the baud rate to match the Smart Tether setting (4800). The data stream should start to display
in the area on the right and the position should be displayed on the video as overlay text.
When a port is set up, the setup background will turn green when communications have been established and
data is being received. If communications have been established with the selected COM port, but no data is
being received, then background will turn light brown. If no communications have been established with the
selected COM port, the background will turn red.
* - For more information about NMEA and NMEA data standards, see http://www.nmea.org.
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