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Turbo iDDR User Guide
06 July 2005
Chapter 4 Operation: AppCenter Workstation
Loop mode operational considerations
Consider the following when planning for Loop Record operation:
• Minimum loop record length– 6 minutes
• Maximum loop record length– Maximum record length is limited by the amount
of storage space and the compression settings used. A message is displayed if the
fixed length you enter exceeds the available disk space.
• Minimum record to playback time– 5 seconds. In other words, playback in loop
record can start no sooner than 5 seconds after the start of record.
• Modifying the loop record name or length– You can modify the loop record
name or length during record. If you reduce record length, the oldest media outside
the new record length is erased.
• Stopping loop record– If the recording is stopped before the fixed length is
reached, the resulting program duration is the time elapsed since the recording
started. Like normal record mode, you cannot stop, then start a loop recording.
Once record is stopped, you must eject the program and create a new loop record.
• Transferring the loop record program– The loop record program cannot be
transferred to a file or networked device until record is stopped.
• Loop record storage space is not reserved– Loop record is allowed to start as
long as the record length you enter is less than the available storage, however, the
storage space is not reserved. For example, you may have enough storage space to
start the loop record, but you are still allowed to transfer media or otherwise fill
disk space. Warning messages are displayed in the AppCenter StatusBar when
available storage reaches 10% total disk space. All recording is halted when media
storage reaches its full threshold.
• Pausing the loop record program in Player mode– You cannot pause the loop
record program in Player mode indefinitely. Eventually, the record length is
reached and the video at the current position is erased. As this happens, the current
position is advanced in 3 minute increments as the oldest unused media is erased.
• Changing thumbnail image– Thumbnail images displayed in the clips pane are
generated using the 16th frame of video. The thumbnail image for a loop record
program appears as normal until the fixed length is reached. Then, the thumbnail
will update every 3 minutes as media is erased beginning with the oldest unused
media. As the media used to generate thumbnails is erased, new thumbnails are
generated.
• Erasing oldest media is suspended when creating a subclip– When creating
subclips in Player mode, erasing oldest media is suspended when the first mark is
entered (mark-in or mark-out). This means that the loop record program length
may grow larger than the length specified. Erasing media is resumed and the oldest
media outside the fixed length is purged when the second mark is entered and you
select the Accept button. You could inadvertently fill storage space if you enter the
subclip marks, but fail to click the Accept button.
NOTE: Erasing oldest media is also resumed when you exit subclip mode by
ejecting the subclip, or by clicking the Source Clip button.
• Use genlocked inputs for time delay– For error free time delay operation, ensure
that the video input is genlocked to the video reference signal. This will eliminate
Summary of Contents for Turbo
Page 8: ...8 Turbo iDDR User Guide 06 July 2005 Contents ...
Page 12: ...12 Turbo iDDR User Guide 06 July 2005 Finding Information ...
Page 18: ...18 Turbo iDDR User Guide 06 July 2005 Safety Summaries ...
Page 32: ...32 Turbo iDDR User Guide 06 July 2005 Chapter 1 Product Introduction ...
Page 48: ...48 Turbo iDDR User Guide 06 July 2005 Chapter 2 Configuration Turbo iDDR ...
Page 127: ...06 July 2005 Turbo iDDR User Guide 127 About loop record mode periodic picture shift ...
Page 280: ...280 Turbo iDDR User Guide 06 July 2005 Chapter 7 Maintenance Tasks ...
Page 296: ...296 Turbo iDDR User Guide 06 July 2005 Appendix C Specifications ...
