Dante DLW5400, Installation And Operation Manual, Page: 45 / 71

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DUAL STREAM
DVR can simultaneously generate two independent video streams (one for local recording and
the other for network transmission) for user to effectively manage recording image quality and
network traffic. The frame rate and resolution for each stream can be independently set, for
example, user can make recording setup as “30fps at D1 resolution” while the network setup as
“just 1 fps at CIF resolution”. Select “USE DUAL STREAM” in order to use this function. The
resolution of network stream should be set equal to or lower than recording stream.
Note “HELP” button will help you understand how to setup several important settings.
For example, if you need help about how to set Camera, click “HELP” button.
Note “Auto Del” does not guarantee the number of recording days that user set. For example,
even though user sets 10days in “Auto Del”, if HDD space is not enough, then the system
can not record up to 10days. This feature is not to keep video data for a certain number
of days set by user.
If user sets 10days in “Auto Del” on August 20 for the system that has, for example,
30days of video data, then the system will keep video from August 11 to August 20 for
10days. All other video recorded before August 11 will be deleted by the system. On
August 21, the system will keep video from August 12 to August 21 for 10days.
Note The storage capacity for the same image will be different. Image per byte is ratio to the
image dimensions (horizontal x vertical), thus 720×240/288(2CIF) is twice the size of
352×240/288(1CIF) and 720×480/576(D1) takes about 4 times the storage capacity.
Therefore when high resolution is selected for the same period, the storage capacity
taken up will be larger and the storage period will be shorter on the same Hard disk
capacity.
Note The system usually have maximum operational burden in work-load for highest picture
quality setting.
Thus, the maximum recording speed up to 200fps(PAL)/240fps(NTSC) might not be
guaranteed in highest picture quality mode, which means there might be some frame
skipping phenomenon sporadically.