UMD 9000 series, Руководство пользователя

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UMD NVR User Manual
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Playback button:
The figure buttons corresponds to playback functions as follows: play, stop, rewind,
single frame back, single-frame forward, fast backward, fast forward, previous paragraph,
next paragraph, full screen, single screen/four screens, and screenshot.
5.3.7.3 Backup video
The buttons in the Backup locking operation area successively are "capture", "backup",
"batch backup", "lock file", "unlock the file". After access USB backup device on the device,
the selected file can be back out individually, and you can also disposable batch backup all
files that match the search criteria; if there are important documents you do not want it to
be overwrite by the re-written file after the hard disk is full, you can choose to lock the files,
the locked files can be unlocked.