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The “recording buffer” allows user to define “pre-alarm” and “post-alarm” time
for event recordings. The “pre-alarm” time sets the NVR to record in advance
when an event is triggered. The “post-alarm” time sets the NVR to continue
recording for a period of time after an event trigger is finished.
Recording frame rate allows you to set different frame rate for different types
of recording instead of recording at one frame rate only. Use the drop-down
menu and select one of the pre-defined frame rates for a particular recording
type
* The “Pre-alarm” function only
works when the “Continueous” re
-
cording is also activated.
Users can also set to keep a previous number of days of recording data by en-
abling the option below. This is quite often used in application such as banking
which certain countries requires to always keep a minimum previous number
of days of recording data.
* If this option is enabled, once the hard drive is full, the recycle function will then start
but it will ensure that the number of days of recording data defined here will stay in hard
drive instead of wiping out 20GB of data at a time.
* If the hard drive is not full, the NVR re-calculates twice a day (each at 2:30am and
2:30pm) to keep the defined number of days of recording data from these two particular
point of time backward.
