Underwriters Laboratories Network IR Speed Dome Camera Guía de usuario Pagina 15

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Introduction
1-2 Configuration and User Guide
Features
The following provides information on the features of the IP Dome.
ACC compression
Three quality levels (Super, Normal, and Extended Record) are available on the camera.
Two sensitivity levels (Normal and High) are available on the camera.
Frame Rates
Table 1-1 — Frame Rates
The IP Dome supports a maximum or 30/25 (NTSC/PAL) images per second per video channel at
4 CIF. Actual frame rates may be less due to high motion. Multiple Ethernet connections can limit
the maximum available IPS rate per connection.
Resolutions
The following table displays the resolutions for NTSC and PAL
Table 1-2 — Resolutions
Video loss detection
In the event of video loss, an alarm is generated. The alarm is automatically cleared when the
video is restored.
Bandwidth Throttling
When bandwidth throttling is turned on, the camera will attempt to restrict the total bandwidth of all
camera activity to within the specified limits by varying the quality of all video streams. When the
limit is exceeded, for example, by sudden movement in the captured image, the quality of each
codec is reduced by one unit, until the total bandwidth lies below the limit. When the camera
detects that there is sufficient bandwidth available, for example, when the motion stops, it will
increase the video quality by single steps.
CIF NTSC PAL
4CIF 30 IPS 25 IPS
2CIF 30 IPS 25 IPS
1CIF 30 IPS 25 IPS
NTSC PAL
QVGA (320 x 240) QVGA (320 x 240)
1 CIF (352 x 240) 1 CIF (352 x 288)
HVGA (640 x 240) HVGA (640 x 240)
2CIF (704 x 240) 2CIF (704 x 288)
VGA (640 x 480) VGA (640 x 480)
4CIF (704 x 480) 4CIF (704 x 576)
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