Imagine NEO DVR-3901, Installation And Operation Manual

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62 DVR-3901 Installation and Operation Manual
Chapter 5: Functions and Controls
Storage
The compressed video, PCM audio, and time code are stored on the
on-board 2.5 in. (6.35 cm) IDE hard drives. A DVR-3901 has two hard
drives installed.
Disk status reporting parameters include:
•
DiskSize : Shows the online disk size and offline disk sizes
• DiskStatus : Shows the disk well-being
• DiskUsed : Indicates the percentage of disk occupied by media and
system material
Table 5-1 shows the number of hours of video that a single 80 GB hard
drive can store.
Use DiskOnline to select which drive(s) are online, and which are
offline.
Online Drives
Online drives record and play back video and accept transport, Odetics,
and playlist commands coming from an RS-422 or Ethernet port. If both
drives are online, they are merged as a single disk space and the merged
drive is given drive letter M:.
A single recording can span two drives. The resulting file is split into
two clips, one on each drive.
Note
In Europe and Asia the 2.5 in.
(6.35 cm) hard drive is
described as 9.5 mm.
Table 5-1. Video Hours Available
Video Bit
Rate (Mb/s)
Compression
Ratio
Equivalent
Quality
40 GB Hours
42 4 DigiBeta 4:00
34 5 BetaCam 5:00
28 6 BetaCam 6:00
24 7 BetaCam 6:50
21 8 BetaCam 7:50
19 9 S-VHS 8:40
17 10 S-VHS 9:30