EverFocus PARAGON 264x1 User Manual page 38

PAL: 704x576 / 704x288 / 352x288
Record Quality: Select an image quality for recording. There are five different options available: Superior, High, Standard,
Basic and Low. A higher image quality uses more HDD space.
Normal Speed: The maximum frame rate in frames (images) per second (FPS) for continuous recording. The speed is
limited by the processing capacity of the DVR divided by the combined processing requirements of all the installed cameras,
with an upper limit of 30 FPS for NTSC (25 for PAL) per individual camera (real-time recording). This DVR is capable of
recording 480 CIF-sized frames (352x240) per second (NTSC; 400 for PAL). To record a resolution of one 2 CIF-sized
(704x240) image (per a given moment) requires the computing resources of two CIF frames (per the same given moment)
from the overall capacity of 480 CIF frames per second. To record a 704x480-sized image (called D1 or 4CIF) requires the
computing resources needed to process/record four CIF frames from the overall capacity of 480 CIF frames per second.
Thus, this DVR can record a combination of CIF, 2 CIF and 4 CIF images, with different combinations of image
size/resolution and different FPS rates on different cameras, so long as the total number of allocated CIF equivalents is not
greater than 480 CIF per second. Available options for recording speeds are 30, 15, 10, 7.5, 5, 3, 2 and 1 FPS.
Examples (for NTSC):
16 cameras at CIF resolution at 30 FPS: 16x30=480 FPS
2 cameras/4CIF/30FPS plus 5 cameras/2CIF/15FPS plus 9 cameras/CIF/10FPS:
2x4x30+5x2x15+9x1x10= 240+150+90 = 480
2 cameras/4CIF/30FPS plus 2 cameras/2CIF/30FPS plus 12 cameras/CIF/10FPS:
2x4x30+2x2x30+12x1x10= 240+120+120 = 480
In these examples, the recording capacity of the DVR is fully allocated to normal recording, with no reserve capacity for
increasing image size and/or FPS rate in response to a motion or alarm event (see next item). Since EverFocus DVRs have
the capability to change the size of recorded frames and the FPS rate in response to events, it may be advisable to reserve
some recording capacity for when an event response is triggered.
For example: 2 cameras/4CIF/10FPS plus 5 cameras/2CIF/10FPS plus 9 cameras/CIF/5FPS:
2x4x10+5x2x10+9x1x5= 80+100+45 = 225 allocated with 255 in reserve
Recording capacity remaining for all cameras (shown to the right of the 'Normal Speed' field) : The number here
indicates the remaining recording capacity available for all installed cameras, calculated according to the image size
(Resolution) selected for the current camera. That is, the number shown is the number of available FPS at the selected
image size (Resolution). Thus, the number shown is the number of still-available CIF-sized Frames Per Second divided by
the number of CIF equivalents required to record that size image – 1 (for CIF), 2 (for 2CIF), or 4 (for 4CIF / D1). Changing
the Resolution of a camera, or viewing the settings for a camera with a different resolution will cause this number to change
in proportion to the selected image size for the selected camera. When this number is positive, it means there is still
recording capacity available for allocation. If this number is negative, it means the recording capacity has been exceeded,
and the user must lower at least one camera's Normal Speed recording rate or reduce at least one camera's Resolution
(which will require the DVR to process fewer CIF-sized Frames). This number must be positive ("+") before the user can
save the changes. Otherwise, a pop-up window will display "Total FPS exceed maximum recording rate, discard changes!"
and the settings for all cameras will return to their previous values.
Event Speed: This is the MAXIMUM desired frame rate in frames per second (FPS) for event recording; if more than one
camera requires simultaneous event recording, the total for all cameras cannot exceed the maximum available FPS for the
DVR at the corresponding resolution setting, and the available FPS may automatically be divided across all cameras
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