Triton Isis - Manual (Page 91)

June 2004 Isis® Sonar User's Manual, Volume 1 77
After recording has started you can monitor the current size of the file from the
Switch File button at the right side of the Parameter Display window.
4.5 The Switch File Dialog Box
The Switch button is located in the Parameter window. Clicking Switch displays
the Switch File dialog box where you can specify the maximum size a file shall
have before a file switch will occur. The default is 200 MB. When a file reaches
200 MB, Isis closes it, creates a new name, and resumes saving to the new file.
When file names end in a number, and Switch is performed, the number is
automatically incremented for a new file name and saving continues in the new
file. This does not apply to files named in the JJJ-HHMMSS format. When using
that format, the time and date are always used to create the file name.
If saving to tape, the tape drive control software will automatically delete the
previous disk file (unless you override this choice) and continue saving the new
file with no break on the tape data stream. In this way, the hard disk behaves like
a 200MB cache for the tape data. The data on the tape is essentially one huge
file, with filemarks written only if you press Stop, or if you rewind the tape for any
reason.
Chapter4: Setting Up Isis to Record Data