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8
The distance is too far
18.
Ask: how much capacity is occupied in hard disk by record per hour
Answer:
1
For audio record, about 14Mbyte capacity is occupied for each channel
The capacity occupied in hard disk by video record depends on the selection of "Record
2
mode > bit rate": excellent, good, medium, and also depends on the motion amount of
pictures within the time interval; if the picture is still, then the consumption of hard disk is
lower; if the picture is motive, then the consumption is higher. When "excellent" is selected,
about 320Mbyte capacity is occupied for each channel of video per hour; when "good" is
selected, and the pictures are still or small motive, then about 50~100Mbyte capacity is
occupied for each channel of video per hour; if the pictures are large motive or many small
motive, then about 100~200Mbyte capacity is occupied for each channel of video per hour;
when "medium" is selected, and the pictures are still or small motive, about 50~100Mbyte
capacity is occupied for each channel of video per hour; if the pictures are large motive or
many small motive, then about 100~150Mbyte capacity is occupied for each channel of
video per hour;
19.
Ask: I/O alarm has no function
Answer: possible reasons:
1
Alarm setting is incorrect
2
Alarm wiring is incorrect
3
Alarm input signal is incorrect
4
One alarm device connects to 2 circuits at the same time
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