Image flickering is often caused by fluorescent lights due to their characteristic rapid on-off cycling. This cycling can interfere with the camera's frame rate, leading to visible flicker in the captured video. Adjusting the camera settings to match the frequency of the fluorescent lights can help reduce this effect. For more information, consult Axis Communications' troubleshooting guides on image flickering.
Question # 5
With Axis Coverage Shapes, the designer can
A.
See the effect of furniture or other objects blocking field of view.
B.
View how varying lighting conditions affect the image.
C.
Create a 3D view of the scene the camera will capture.
D.
Determine at what distance a person can be identified.
Axis Coverage Shapes is a tool within Axis' design software that helps determine the optimal placement and specifications of cameras to ensure that identification and surveillance goals are met. It allows the designer to visualize the camera's coverage area and assess the distance at which a person can be identified, ensuring that the camera's placement and specifications align with the security requirements. For more detailed information, refer to Axis Communications' resources on Axis Coverage Shapes.
A P-iris lens is a type of DC-iris lens that incorporates feedback to maintain optimal image quality. Unlike a standard DC-iris, which only adjusts based on light levels, a P-iris lens uses a feedback mechanism to optimize the iris position, ensuring consistent image sharpness, depth of field, and optimal contrast. This technology allows for precise control over the iris, which is especially beneficial in varying lighting conditions. According to Axis documentation, P-iris lenses are designed to deliver better performance by continuously adjusting the iris for optimal image quality.
Question # 7
The capability to view and record up to four different areas of the whole image of an AXIS P1346 is called
The capability to view and record up to four different areas of the whole image of an AXIS P1346 camera is called Multi-view streaming. This feature allows multiple cropped views to be created from a single high-resolution video stream, enabling more efficient use of bandwidth and storage while focusing on specific areas of interest within the full image. For more information, refer to the Axis Communications product documentation and technical notes on Multi-view streaming capabilities.
Question # 8
In a network surveillance installation, the purpose of a router is to
A.
Forward the video stream between networks.
B.
Forward the video stream to the correct receiver within a network.
C.
Separate audio and video traffic to reduce audio latency.
D.
Separate the video stream from the camera control signaling.
In a network surveillance installation, a router's primary function is to forward data packets, including video streams, between different networks. This allows devices on separate networks to communicate with each other, enabling the transmission of video feeds from cameras to recording devices or viewing stations located on different network segments. [Reference: Axis Communications - Network Infrastructure for Surveillance Systems]