IC Realtime 2 Megapixel Full HD 20x Optical Network PTZ Camera IP66 300 ft IR (ICIP2001HDIR) - Manual (Page 51)

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Figure 2-42
Please refer to the following sheet for detailed information.
Parameter Function
Pack
Duration
Here you can select file size. Default setup is 60 minutes.
Pre-record Please input pre-record value here.
For example, you can input 4 here so that system can read the
previous four seconds video before the alarm occurrence from the
buffer and record the 4 seconds video in the file.
Please note, if there is no record when alarm record or motion detect
record occurred, system can record the N seconds’ video before the
event occurrence in the file.
Disk Full
There are two options: stop recording or overwrite the previous files
when HDD is full.
z Stop: Current working HDD is overwriting or current HDD is full,
it will stop record.
z Overwrite: Current working HDD is full; it will overwrite the
previous file.
Record
Mode
There are three modes: Auto/manual/close.
Record Bit
Stream
You can select main stream or extra stream.
2.6 System
2.6.1 General
The general interface includes the general setup and the date/time setup.
2.6.1.1 General
The general interface is shown as in Figure 2-43.