Dedicated Micros D4 Guía De Programación página 16

Tip: To work out the update rate per camera - the number of seconds before the
camera is updated. Divide the number of cameras by the record rate (PPS). For
example, 4 cameras with a record rate of 3PPS will be:
Update rate (seconds) = Number of cameras = 4 = 0.67 seconds
PPS
You can decrease the update rate by increasing the record rate (PPS), the only
drawback is that the recording time will also decrease.
Events active
Select whether the alarms and activity are on or off for day, night, and weekend
schedules.
When an event is triggered it is automatically interleaved with the non-event
cameras, i.e. if camera 1 has an event, the recording sequence would be
121314121314 rather than the standard sequence of 12341234, effectively
increasing the record speed of camera 1.
Tip: By using event interleave, it is possible to keep the record rate constant but
effectively increase the speed of alarm or activity recording.
Recorded file size
The file or image size affects the quality of the images recorded to disk. A larger
file size has superior picture quality, but will fill the hard disk faster, so less time
will be recorded before the images will be overwritten.
The file size can be set between 6 and 45KB. The table below shows the image
quality at typical file sizes:
Image quality
VHS
S-VHS
S-VHS+
14
3
File size (KB)
14KB
18KB
25KB
Note: The equivalent image quality is representative in most circumstances,
however, camera views with large amounts of image detail may require the file
size to be increased to obtain a similar image quality.
Increasing the file size over 40KB will decrease the maximum record rate to
18PPS, even if a record rate of greater than 18PPS is selected.
Maximum recording time
The maximum recording time is the number of days and hours before the images
are overwritten. The maximum record time is calculated automatically when
the standard or event record rate is highlighted and changed. Note that the
maximum recording time will include the audio, if it is enabled in the System
Options menu page.
Tip: Reducing the file size (KB) or record rate (PPS) can increase the maximum
recording time.
Total video storage
The figure displayed shows the total amount of internal and external disk capacity
available for video storage in GB (Gigabytes).
Earliest recording
The earliest recording displays the date and time of the first image on the disk.
Note: If an event partition is set (in the Event Setup menu) then the earliest
recording could be an event that is older than the first standard recording.