FEI Quanta FEG 250, User'S Operation Manual

Page: 96 / 228

Operating Procedures: Recording Movies (Saving Multiple Images)
5-24
Timer module
The parameters in this section can be changed when the digital video
is inactive, but are disabled during recording. The digital video is
recorded asynchronously with the scanning.
• The Movie check box – AVI (Digital Video) timer:
After the Delay time, the image of each resumed quad is stored
immediately (even in the middle of the frame) as a new frame in
the video stream.
• The TIF check box:
After the Delay time, images series of each resumed quad are stored
at the end of the running scan (the system waits) in TIF format.
• In the read only area additional information are given about the
number of stills (frames) per time unit (seconds, minutes).
If both TIF and Movie check boxes are selected, AVI and also TIF files
are stored. In this case the AVI file is not reconstructed from TIF files,
which means the directly recorded movie can be different from the
movie reconstructed from TIF files.
Note:
TIF files are better to save in many cases as they can be built into a
faster AVI and the databar display can be customized when building
an AVI file (see below).
If both AVI and TIF are recorded, the AVI may be jerky due to delays
when writing TIF files to a disk. TIF delay must always be longer than
or equal to the Movie delay.
File module
Names of Movie [TIF] files are composed as follows:
File name , (quad name), Numeric seed , [- series number].avi [tif]
For example: MovieName (Quad1) 015 [- 00023]. avi [tif]
[The series number always has five digits form with leading zeros.]
• The File Name – a generic file name must be entered here,
otherwise the Movie tab cannot be closed. Do not use punctuation,
dashes or other non alpha-numeric characters, otherwise the
movie maker is not able to build an AVI.
• The Save in – a path to an existing directory must be entered here,
otherwise the Movie tab cannot be closed. Use the Browse button
to find the location.
• The Numeric Seed – enter any number from 1 to 999 which is
converted to the three digit form with leading zeros. The numeric
seed is automatically incremented, after the recording has
stopped, or the video file size limit has been reached.
• The Video File Size – the maximum AVI video file size (lower than
2000) in MB must be entered here, otherwise the Movie tab cannot
be closed. After reaching this size, the video file is closed and a
new one is automatically created, without interruption of the
recording process. A dialogue warning appears if the hard drive
lacks sufficient free space.
• The File Type – the list box with supported video compression
format types. Try to change the format if the resulting movie files are
too big or if the system is overloaded during the movie recording.
• The Record Databar check box allows the databar to be included
in the video (tif files).