Hydromagic Manual Sound Velocity Plugin

The Hydromagic Manual Sound Velocity Plugin is a plugin with graphical user interface designed to let you set the current sound velocity manually.
This allows you to enter sound velocity changes during the survey when no sound velocity profiler data is available.

Loading the manual sound velocity plugin

To load this plugin, open the preferences window by selecting "Preferences..." from the "Options" menu. In the window that appears, select the "Devices" tab. Next, click the 'Add...' button.

A list of available plugins will be displayed. In this list, select the "Hydromagic Manual Sound Velocity Plugin" and click "OK" to load and display the plugin's user interface.

Using the manual sound velocity plugin

As soon as the manual sound velocity plugin has been loaded it will add sound velocity measurements to the raw data when recording has been started. The sound velocity value is written to the start and end of RAW data files, and when the sound velocity level has been changed by the user.

To change the sound velocity value you can use the 'Increase Velocity' and 'Decrease Velocity' buttons. To enter an exact value, type the new sound velocity value in the edit field and click the 'Update Velocity' button to apply it.

To switch between US and metric units (meters per second vs feet per second), use the "Meters per Second" or "Feet per Second" button. The current value will automatically be converted.

Recording of manual sound velocity data

As soon as a recording is started, the current manual sound velocity value will be written to the RAW data file. The sound velocity value is also written to the end of raw data files, and when the sound velocity has been changed by the user.

  NAM RAW00028
  CMT 
  VIS 1
  HUN 9003
  VUN 9003
  PRJ 6510
  DTM 6318
  ELL 7019
  PRM 8901
  GEO 0
  ANT 0.000
  DFT 0.000
  VER 9.0
  BLD 9.0.64.0113
  KEY 3-4348792
  DEV 1 0 "Hydromagic Manual Sound Velocity Plugin" ""
  SVS 00000000 00000001 1579597036.045 0.000 1500.000
  SVS 00000000 00000001 1579597037.030 0.000 1500.000
  SVS 00000000 00000001 1579597038.030 0.000 1500.000
  SVS 00000000 00000001 1579597039.024 0.000 1501.000
  SVS 00000000 00000001 1579597040.024 0.000 1501.000
  SVS 00000000 00000001 1579597041.028 0.000 1501.000
  SVS 00000000 00000001 1579597042.025 0.000 1500.000
  SVS 00000000 00000001 1579597043.029 0.000 1500.000
  SVS 00000000 00000001 1579597044.030 0.000 1499.000
  SVS 00000000 00000001 1579597045.025 0.000 1499.000
  SVS 00000000 00000001 1579597046.030 0.000 1499.000
  SVS 00000000 00000001 1579597047.028 0.000 1500.000
  SVS 00000000 00000001 1579597048.024 0.000 1500.000
  SVS 00000000 00000001 1579597049.027 0.000 1501.000
  SVS 00000000 00000001 1579597050.027 0.000 1501.000

Unloading the manual sound velocity plugin

To unload the manual sound velocity plugin window, open the preferences window by selecting "Preferences..." from the "Options" menu. In the window that appears, select the "Devices" tab. Next select the "Hydromagic Manual Sound Velocity Plugin", right-click and select "Remove Device..." from the pop-up menu.

When the plugin is unloaded (either when removed from the devices list, or when the software is stopped), the current sound velocity and window position are saved. The next time the plugin is loaded, the user interface will be on the same screen location and the last known manual sound velocity value will be displayed.