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ESV4 User’s Manual 103
General Settings
You can define the following in “General Settings”:
• Pre-Alarm/Post-Alarm recording length
• Recording frame rate
• Turn on/off HDD recycle function
• Define to always keep a number of days of previously recorded data
• Enable/disable different recording types on different cameras
• Enable/disable audio recording
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.