The driver has user-interface and should be present in the Windows task bar.
When going on-line for the first time, locate the driver in the task bar, and set the approximate latitude of your survey/work area.
You only have to do this once, unless you go to a different area.
During start-up and initialization of the driver, some required commands are automatically sent to the sensor, in order to get the correct format.
These command settings are also sent when you change the sampling rate.
Notice that all communication messages to and from the sensor are displayed in the Messages list of the driver's dialog.
If all is okay and working well, you should see on every update a spinning icon in the first row, followed by the received raw data string.
The format of the expected raw data string is shown under Format Description
Calibration of the pressure sensor is recommended prior to the start of every depth profile creation.
Just take the miniSVS/miniSVP sensor out of the water, and select the [Calibrate...] button.
After a successful calibration, you should be able to locate the Measured Air Pressure value in the Messages List. Further, the depth reading in the second row should be +/- 0.000 [m].
Now you may start generating a depth profile:
Press the [Start] button, and lower the sensor in the water, until you reach the sea bottom.
As soon as you press Stop and confirm, a profile will be generated. Further, the Controller will be informed that a new Sound Velocity Profile is available.
It depends on the Echosounder Settings in the Controller, whether this new profile is accepted immediately, or whether it needs to be validated prior to accepting.
Description of the Create Profile action buttons
The driver will start collecting data for a new depth profile. After confirmation, the deck-hand must proceed lowering the sensor into the water until the sea bottom is reached. At this point, select the Stop button in order to generate the profile.
The driver will stop collecting data, after confirmation. A profile will be generated and the Controller is informed. The values of the new profile can be monitored directly in the message list.
Notice that the Start and Stop action does not send any commands to the sensor. So make sure that the data string is already coming in correctly and the depth and sound velocity values are decoded with reasonable figures.
Description of the settings:
This field shows the last received data string from the sensor. The spinning icon in front of the data string is updated with every new received string.
This field shows the depth in [m], after converting the decoded pressure and latitude, using the standard ocean depth formula. Notice that for shallow water the depth is almost the same as the pressure in decibar.
Find below a table as indication of the latitude effect.
This field shows the decoded sound velocity value as is, in meters/second.
When changing the sampling (or update) rate, certain commands will be sent to the sensor, in order to tell the sensor how often it should output the data string.
Notice that the "Single Reading" option will stop the output, after outputting one single reading.
Enter the approximate latitude of your survey/work area. This value is used as input parameter for the standard ocean depth formula, in order to convert pressure to depth. See also the table above.
Depth interval for the profile. If you leave this value to zero, all received samples will be part of the profile. The default 0.5m is recommended to use.
A calibration should be performed prior to every depth profile creation. It actually resets the pressure to zero, so it is important to have the sensor out of the water or just at the water surface (at depth 0).
Notice that the Calibrate action sends certain commands to the sensor.
The message list contains a maximum of the last 200 message. Use the Clear button to empty the list.
As soon as a new profile is generated, the Controller is informed.
Select in the Controller the Echosounder Settings from the Settings pull down menu, and locate in the Velocity Profile Settings the Valeport miniSVS system.
Click on the icon, and three options become available:
Update last received profile now
Select this option to import the last generated profile. This option is recommended because prior to pressing the OK or Apply button, the user may validate the profile.
Automatically Update Profile
Enable this option in order to accept the new profile immediately, without any validation. All other QINSy processes are also informed automatically.
If the Controller was busy with a recording session, the recorded database will be split. This option is only recommended when the performance of your miniSVS sensor is good, i.e. no spikey data in the profile.
Inform after new update
When this option is enabled, a message box will pop up in front of the Controller's view, informing the user about the new profile.