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2. SONAR OPERATION
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2.11 Recording Sonar Data
You may save real-time data to a file. To save real-time data, do the following:
1. Choose Record Sonar Data from the File menu. The Save as dialog box
appears.
2. Choose location where to save the file and enter file name.
3. Click the Save button to save the data.
The TS-331A automatically adds the extension “.331”. The equipment will
continue interrogating the sonar unit for data while at the same time recording
those data to a file.
To stop recording sonar data, choose Stop Data Recording from the File
menu.
2.12 Playing Back Sonar Data
You can also use the TS-331A.exe program to playback data that has been
recorded to a file (with file extension .331).
To open a .331 data file to playback, select “File->Open File to Playback” or click
the Toolbar button
. When the program is running in file playback mode, the
frame window will show a File Playback dialog bar. You can drag and dock it to a
convenient place on the screen. This dialog bar lets you control the playback
speed and playback file position.
File progress indicator, playback speed selector
File Progress: A slider bar with the pointer showing file playback position similar
to the slider bar on the property page. Dragging the pointer to a new position will
cause the file playback to start at that position. The slider range represents the
file size.
Since the playback speed is fast, sometimes it is difficult to catch the right
pointer position, because the pointer re-draws its position every time after a file
record is processed. It is better to set the file playback on hold before you drag
or click the slider bar.
Play Back Speed: Pressing the spin button up or down will change the playback
speed faster or slower. The speed change will show in the speed progress bar.