Sentinel V SC and RT Operation Manual
September
2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 55
Step 2: Settings
Use the
Step 2: Settings
panel to change how the system will be set up during the deployment. Click Save
on the
Step 1 Set sampling strategy
panel
to save the settings or Cancel to return to the previous settings.
ADCP depth
– Enter the depth of the ADCP. The ADCP uses depth in its speed of sound calculations. If the
pressure sensor is not available, then the ADCP will use this manual depth setting.
Salinity – Enter the salinity of the water. Fresh water is 0 and salt water is typically 35. Salinity is used to
calculate the speed of sound. The speed of sound is used by the ADCP to scale the velocity data properly. If
0 is entered when deployed in 35 salinity water, the data will have a 3% velocity estimate error.
Magnetic variation
– Enter the angle between true north and magnetic north. By convention, declination is
positive when magnetic north is east of true north and negative when it is to the west. This angle varies
depending on position on the Earth’s surface, and changes over time. The compass default is to output
magnetic heading.
For the greatest accuracy, TRDI recommends checking the National Geophysical Data Center
website (below) to find the declination angle based on the latitude and longitude:
http://www.ngdc.noaa.gov/geomagmodels/Declination.jsp
Heading adjustment
– Corrects for a physical misalignment between the ADCP’s Beam 3 and the heading
reference. Enter the heading alignment angle (referenced to Beam 3) used as a new zero reference for
heading output.
Serial Port – If the ADCP includes the real-time serial output data feature, select the Serial port Baud
rate from the drop-down list. See Using Real-Time Serial Data Output for details on cable connections.
Using a low baud rate will impact the Ping interval. The time between pings needs to be
sufficient to allow time for the data to be output through the serial port before the next ping.
If you see an error message, increase either the Baud rate or the Ping interval.
Using Real-Time Serial Data Output
There is no command and control on the serial port on firmware version: 47.xx. The only
command and control is through the deployment Web software application ReadyV. For
command and control through the serial port, see
and
Connecting to the Sentinel V Real-Time
The V Series Self-Contained ADCP can include an optional real-time serial data output. This feature must
be configured when the system is ordered. The output format is PDO and will be single ping ensembles of
beam coordinate profiles with no screening. Use Sentinel V RT Utilities or your own software to capture
the data to a file as it is output by the Sentinel V. Use the Velocity software to properly screen, transform,
and average the data just like data collected on the recorder.
To use the real-time serial data output:
1. Review the
and set the computer’s power options to the recom-
mended High Performance settings.
