Axis Communications ANVE Axis Network Video Exam Exam Practice Test

A privacy mask in Live View is used to hide parts of the scene from being viewed or recorded, ensuring privacy in specific areas of the surveillance footage. These masks can be configured in various shapes to cover the required sections effectively. Privacy masks are particularly useful in environments where certain areas need to be excluded from monitoring to comply with privacy laws and regulations. [Reference: Axis Communications - Privacy Masking Features]

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When initiating a surveillance project, the first and most critical step is to understand the customer's goals and requirements. This involves gathering detailed information about what the customer aims to achieve with the surveillance system, the specific areas they need to monitor, and any unique challenges or constraints they might have. This understanding helps in designing a tailored solution that meets the customer's expectations and operational needs. [Reference: Axis Communications - Surveillance Installation and Configuration Guide]

When choosing between a camera with good low light performance and a thermal camera, the specific conditions of the installation site are crucial. For scenarios such as:

A. A primarily dark area like a subway or parking garage, a camera with good low light performance is necessary to capture detailed images in low light conditions where visible light is minimal.

C. In a parking lot for facial identification, good low light performance is essential to ensure that the camera can capture clear and recognizable facial features, even in low light situations.

Thermal cameras, while effective in detecting heat signatures, are not suitable for capturing detailed visual information such as facial identification.

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.

The H.264 compression standard is highly efficient and can significantly reduce bandwidth and storage requirements compared to Motion JPEG. This is because H.264 uses both intra-frame and inter-frame compression, which reduces the amount of data needed to represent video by eliminating redundant information between successive frames. Axis Network Video documentation states that H.264 can reduce the required bandwidth and storage by up to 50% or more in typical surveillance scenarios, making it an advantageous choice for video compression in surveillance systems.

When using a wireless network for video surveillance, protecting the video stream is crucial to prevent unauthorized access and ensure data integrity. VPN (Virtual Private Network) encrypts the data transmitted over the network, providing a secure tunnel between the camera and the viewing/recording device. WPA2 (Wi-Fi Protected Access 2) is a security protocol that encrypts wireless traffic, ensuring that only authorized users can access the network.

Image flickering on an AXIS P1344 can often be attributed to the camera's exposure settings. Flickering is usually caused by lighting conditions that fluctuate at a frequency different from the camera's current exposure settings, leading to the perception of flicker. Adjusting the exposure settings can synchronize the camera with the lighting conditions, thus reducing or eliminating the flickering issue. This can be done by accessing the camera’s web interface and navigating to the image settings to adjust the exposure mode or exposure value. According to Axis Communications' product documentation, fine-tuning the exposure settings is a recommended step to mitigate flickering.

Making a list of the Axis network video product serial numbers in an installation is recommended because it makes it easier to identify the camera in AXIS Camera Management. The serial number is a unique identifier that allows administrators to quickly locate, configure, and manage specific devices within the management software, streamlining maintenance and troubleshooting processes.

The setting that would best adjust a hard yellow tint in the images is the white balance. Adjusting the white balance corrects color casts by accounting for the color temperature of the light source, thereby producing more natural colors in the image. In the example images, modifying the white balance would neutralize the yellow tint and restore accurate colors. Axis cameras have white balance settings that can be adjusted manually or set to automatic for optimal color representation. Further details can be found in Axis Communications' camera setup and image optimization documentation.

Day & Night cameras from Axis are designed to switch to a low-light mode by removing the IR-cut filter, making them sensitive to infrared light. In this mode, the cameras are most sensitive to IR light at a wavelength of 850 nm, which is commonly used in IR illuminators for night vision. This wavelength provides a good balance between visibility and discreetness, allowing the camera to capture clear images in low-light conditions. Axis Network Video documentation details the sensitivity range and performance characteristics of Day & Night cameras, emphasizing the importance of 850 nm wavelength for optimal night-time performance.

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The AXIS P1344-E and AXIS P3344-VE are outdoor-rated products designed to withstand harsh environmental conditions. The "E" in AXIS P1344-E denotes an enclosure suitable for outdoor use, providing protection against weather and vandalism. Similarly, the AXIS P3344-VE is specifically designed for outdoor environments, offering features such as weather resistance and rugged casing to ensure reliable operation in various conditions. [Reference: Axis Communications - Outdoor Surveillance Products Specifications]

The AXIS Q60 Series cameras are designed to work with 60W PoE to ensure full functionality, including optimal pan and tilt speeds. If connected to a 30W PoE, the camera will still operate, but the pan and tilt functions will be limited in speed due to insufficient power. This limitation is outlined in Axis’s technical documentation for the Q60 Series, which specifies the power requirements and the impact on camera functionality when those requirements are not met.

The Group of Video (GOV) length setting affects both the bandwidth and storage requirements of video streams. A longer GOV length, which specifies the interval between keyframes in a video stream, reduces the frequency of keyframes, thus lowering the bandwidth consumption. However, it can also increase the storage time on an SD card because fewer keyframes are stored over a given period, making the video stream more compression-efficient.

For multicast streaming to be effective, the network infrastructure must support multicast protocols. This involves network switches and routers that can handle multicast traffic, allowing video streams to be efficiently distributed to multiple clients simultaneously. Multicast reduces the load on the network by sending a single stream of data to multiple receivers, making it essential for large-scale surveillance deployments. [Reference: Axis Communications - Multicast Streaming Requirements]

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According to Johnson's criteria, the detection range for a person with an AXIS Q1921 with a 60 mm lens in clear weather is 1200 meters (3900 feet). This means that a human observer is able to detect a person at this distance with a 50% probability. Johnson's criteria is a widely accepted method for calculating the probability of detection, recognition, and identification of objects in surveillance imagery.

For 24-hour License Plate Recognition (LPR) of fast-moving cars, adequate illumination is crucial. Infrared (IR) light is essential because it allows for clear image capture in low light or nighttime conditions. IR light ensures that the camera can consistently capture high-quality images of license plates regardless of the time of day, which is vital for accurate LPR. PoE (Power over Ethernet), processing speed, and interlaced scanning are also important, but without IR light, the system cannot reliably operate 24 hours a day. This information is verified from Axis Communications’ documentation on LPR systems and best practices for lighting.

To ensure the AXIS P3347 always delivers the full frame rate of 30 fps even in darker conditions, setting the priority to frame rate is the correct option. This setting ensures that the camera maintains a constant frame rate by adjusting other parameters like exposure time and gain accordingly. This is essential in maintaining video smoothness and capturing real-time motion without dropping frames.

Operating cameras above their specified temperature limits can increase noise in the captured images. High temperatures can affect the electronic components of the camera, leading to higher thermal noise and degraded image quality. Ensuring cameras operate within their designated temperature ranges is critical for maintaining image clarity and overall performance. Refer to Axis Communications' product specifications and environmental guidelines for more information.

The AXIS Design Tool helps users estimate bandwidth and storage usage by using a statistical model based on the selected camera model. This tool takes into account factors such as scene complexity and motion to provide accurate estimates, enabling users to plan their surveillance system more effectively. [Reference: Axis Communications - AXIS Design Tool User Guide]

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When controlling an analog PTZ camera using the Pelco D protocol, the Device ID (sometimes referred to as the address or camera ID) is crucial for ensuring that the correct commands are sent to the intended camera. If channel 1 is controlling the wrong analog PTZ camera, adjusting the Device ID will correct this without the need to change physical cables. Each PTZ camera must have a unique Device ID to ensure proper control within the system. Axis Network Video documentation details the setup and configuration of PTZ control protocols, including the importance of correctly assigning Device IDs.

When connecting and powering a PIR sensor from an Axis camera's I/O port, the output DC voltage provided is 3.3 V. This is a standard output voltage for many Axis network cameras, which allows integration of various low-power devices and sensors directly with the camera’s I/O ports.

To identify people with 80 pixels per face in a hallway that is 2.5 meters wide, a minimum resolution of 1280x720 (720p) is needed. This resolution ensures sufficient pixel density to capture detailed facial features necessary for identification purposes. Given the width of the hallway and the required pixel density, 720p provides the necessary coverage and detail.

Continuous guard tours involve constant movement of the camera, which limits the effectiveness of H.264 compression. H.264 achieves high compression ratios by identifying and removing redundancies between frames, but continuous motion reduces these redundancies, leading to higher bit rates and, consequently, increased storage consumption. For more details, refer to Axis Communications' technical documentation on H.264 compression and PTZ camera operations.

3D privacy masking in Axis cameras refers to a privacy mask that changes its shape depending on the angle of view. This advanced feature ensures that the privacy mask effectively covers the designated area regardless of the camera’s viewing angle, providing consistent privacy protection as the camera moves or zooms.

Gatekeeper is a feature in Axis PTZ cameras that allows the camera to automatically zoom in on an object when motion is detected within a predefined area. This function is useful for focusing on areas of interest, such as entry points or sensitive zones, enhancing security monitoring by providing detailed views of potential security events. Axis Network Video documentation explains that Gatekeeper uses video motion detection to trigger the zoom function, ensuring that important details are captured without manual intervention.

The Guard Tour function allows a PTZ camera to automatically move between predefined positions at set intervals. This feature is particularly useful for monitoring multiple areas with a single camera. By configuring a Guard Tour, the camera can sequentially switch between different positions, providing comprehensive coverage without manual intervention. [Reference: Axis Communications - PTZ Camera Configuration]

AXIS Design Tool is used for determining camera coverage and creating a bill of materials. This tool helps system designers and installers to accurately plan camera placements, ensuring optimal coverage of the surveillance area, and to generate a comprehensive list of required components, facilitating project planning and budgeting.

When installing Axis cameras outdoors, it's crucial to protect the equipment from electrical surges, which can occur due to lightning or other power disturbances. Installing a surge suppressor in front of each camera helps prevent damage from these surges, ensuring the longevity and reliability of the camera system. While grounding endpoints and using UPS for the network switch are also good practices, surge protection directly in front of each camera is specifically emphasized in Axis’s best practices for outdoor installations.

Axis HDTV cameras conform to the SMPTE (Society of Motion Picture and Television Engineers) standards, which ensure that the cameras provide excellent color fidelity and maintain a minimum frame rate of 25/30 frames per second. These standards are critical for ensuring high-quality video with accurate color representation and smooth motion, essential for security and surveillance applications.

Multicast video streaming has several important characteristics:

A. Multicast can help to save bandwidth in a network because it allows the same video stream to be delivered to multiple users simultaneously, reducing the need for multiple unicast streams.

B. Multicast can typically not be used to provide video over the internet because many routers and firewalls do not support multicast traffic across the internet, which is more suited for local network environments.

D. Multicast extends the viewer capacity of a camera or an encoder from 10-20 to an unlimited number, as it does not rely on multiple individual connections to distribute the video stream.

The AXIS M3114-R is designed specifically for use in environments with vibrations, such as transportation. It is rugged and can withstand shocks and vibrations inherent in mobile applications. Other models like the AXIS P3344-VE, AXIS M3014, and AXIS P1344 do not have the same level of vibration resistance. Detailed specifications and use cases for the AXIS M3114-R can be found in the Axis Communications product catalog and datasheets.

The maximum distance for a 100BaseTX Ethernet carrying 802.3at PoE connection between a switch and a camera without any extenders or repeaters is 100 meters (328 feet). This standard distance is applicable for most Ethernet networks and ensures reliable power and data transmission over the specified length.

When using the AXIS Design Tool, it is crucial to convey to the end user that the calculations provided are only estimates and not final numbers. The tool is designed to offer a rough estimate of network bandwidth and storage needs based on various factors such as camera resolution, frame rate, and compression. However, real-world conditions and specific system configurations can affect these calculations, so they should be treated as approximations rather than exact figures.

The AXISP7214 encoder is designed to support multiple video streams per channel and is capable of delivering high frame rates and resolutions, such as D1 resolution at 30 fps in H.264 format. This encoder can handle the strict requirements of delivering 30 fps for recorded video while managing three streams per channel. Axis Network Video documentation specifies that the AXISP7214 is optimized for high-performance video encoding, making it suitable for applications demanding multiple streams and high frame rates.

The most noticeable difference between progressive scan and interlaced video is apparent when viewing frame-by-frame recorded video of moving vehicles. Progressive scan captures and displays all lines of each frame in sequence, resulting in smoother and clearer images, especially for fast-moving subjects. In contrast, interlaced video captures and displays alternate lines per frame, which can cause motion artifacts and blurring in fast-moving scenes. Axis Network Video documentation highlights that progressive scan is preferred for applications where clarity and detail in moving objects are critical.

When installing a camera outdoors to an existing pole, the most important consideration is that the camera has to be ruggedized. Outdoor environments expose cameras to harsh weather conditions, varying temperatures, and potential physical impacts. Ruggedized cameras are designed to withstand these conditions, ensuring reliable performance and longevity.

References: Axis Communications Outdoor Installation Guides and Ruggedized Camera Specifications.

To ensure that 20 cameras show the same synchronized date and time in Live View, the best method is to synchronize the date and time with a remote NTP (Network Time Protocol) server. NTP servers are designed to synchronize clocks of network devices, ensuring accurate and consistent timekeeping across all connected devices. This method is reliable and commonly used in networked environments to maintain time synchronization across multiple devices.

References: Axis Communications Network Video Product Manual - Time and Date Settings.

An increase in bandwidth and storage can be caused by high noise levels and high image resolution. High noise levels, often due to low-light conditions, result in larger file sizes because the noise needs to be encoded along with the actual image data. Higher image resolution increases the amount of data captured, thus requiring more bandwidth for transmission and more storage space. [Reference: Axis Communications - Bandwidth and Storage Considerations]

In a switched network with Unicast, data packets are sent from the source to a single specific recipient. No other computers on the network will receive the data intended for that recipient. This method ensures that the communication is direct and private between the sender and the receiver, which helps in managing network bandwidth efficiently. [Reference: Axis Communications - Networking Basics for IP Surveillance]

Exposure time can become a limiting factor for the camera in delivering full frame rate. Longer exposure times allow more light to hit the camera sensor, improving image quality in low light conditions but also reducing the number of frames per second (fps) that the camera can capture. Shorter exposure times allow higher frame rates but may result in underexposed images in low light conditions.

On layer 3 of the OSI model, the protocol that enables network traffic is IP (Internet Protocol). IP is responsible for addressing and routing packets of data so that they can travel across networks and reach the correct destination. It provides logical addressing and handles the path through which data is transferred between source and destination nodes. Axis documentation confirms that IP is crucial for network communication and is fundamental for the operation of network video systems.

AXIS Device Manager is free of charge. This tool provides comprehensive management capabilities for Axis devices without any additional licensing fees. It allows users to efficiently manage, configure, and maintain their Axis network cameras and other devices, ensuring optimal performance and security. Axis offers this tool as part of their commitment to providing user-friendly and cost-effective solutions, as detailed in their product information and support resources.

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The main benefit of signed firmware is that it allows the device to verify the integrity and authenticity of the firmware before it is installed. This process ensures that the firmware has not been tampered with and is from a trusted source, thereby enhancing the security of the device. Signed firmware prevents unauthorized or malicious firmware from being installed, which is crucial for maintaining the security and reliability of network devices. Axis documentation emphasizes the importance of signed firmware in protecting devices from potential security threats by verifying the firmware's integrity.

Pixel density increases when the field of view decreases. By narrowing the field of view, the same number of pixels are concentrated over a smaller area, resulting in higher pixel density. This means that more detail can be captured in a given area, which is essential for applications requiring high image resolution and clarity. This concept is confirmed by Axis Communications' documentation on image quality and pixel density.

Configuring VLANs (Virtual Local Area Networks) in a network video system has several benefits. Firstly, VLANs keep network traffic separated from other networks, enhancing security and ensuring that video data does not mix with other types of traffic. This separation is crucial for maintaining the integrity and security of the video streams. Secondly, VLANs help avoid network congestion by logically segmenting the network, which improves overall network performance and reduces the likelihood of traffic bottlenecks. Axis documentation supports the use of VLANs to enhance network efficiency and security in video surveillance systems.

The three types of field of view are telephoto, wide-angle, and normal. A wide-angle lens provides a broader view, a normal lens offers a standard view comparable to the human eye, and a telephoto lens allows for a narrower field of view with greater magnification. Axis Communications' technical resources detail these field of view options for different camera lenses.

Secure boot is a security feature that ensures only authenticated and untampered firmware can run on Axis devices. During the start-up process, secure boot checks the digital signature of the firmware against a trusted certificate. If the firmware has been tampered with or is not authenticated, the device will block and reject it, preventing potential security breaches. This mechanism is part of Axis' commitment to cybersecurity and is detailed in their security white papers and firmware documentation.

According to the inverse square law of light, the intensity of light is inversely proportional to the square of the distance from the source. If the light level is 100 lux at 70 meters, at half the distance (35 meters), the light level would increase by a factor of four (since (70/35)^2 = 2^2 = 4). Therefore, the light level at 35 meters would be 400 lux. This principle is widely recognized in lighting and photometric calculations and is supported by Axis documentation related to camera exposure and lighting conditions.

The fisheye view from a 360° panoramic camera can be dewarped both on live video streams and stored video material. Dewarping is a process that corrects the distortion inherent in fisheye lenses to present a more natural-looking image. This feature is supported in Axis cameras and video management software, allowing users to view undistorted video in real-time and from recorded footage. Axis documentation confirms that dewarping functionality is available for both live and archived video streams.

The primary purpose of the accessory on this dome camera is to reduce the weather impact. This accessory, often referred to as a weather shield or rain guard, helps protect the camera lens from rain, snow, and other environmental elements, ensuring clear visibility and reducing the need for maintenance. It also helps to minimize the impact of direct sunlight, reducing glare and improving image quality.References: Axis Dome Camera Accessories

A system designer should recommend the installation of standalone multi-channel video encoders when large numbers of cameras are located near the central monitoring room. This setup allows for efficient centralization of video feeds from multiple analog cameras, converting them to digital signals for easier management and storage. Using multi-channel encoders in this scenario optimizes space and reduces the complexity of wiring compared to installing separate encoders for each camera. Axis Communications' guidelines on transitioning from analog to IP systems support this recommendation.

A router is a device used to forward data from one Local Area Network (LAN) to another. It operates at the network layer (Layer 3) of the OSI model and uses IP addresses to determine the best path for data packets to travel between networks. Routers connect multiple networks, manage traffic, and facilitate communication between different network segments. References: Axis Communications network design documentation and standard networking resources.

The corridor format is particularly useful for scenes such as the one depicted because it optimizes the camera's field of view for narrow, vertical areas. Traditional horizontal formats waste much of the frame on walls or empty spaces when monitoring hallways, staircases, or aisles. By rotating the camera 90 degrees and using the corridor format, you maximize the vertical field of view, allowing for better coverage and more effective surveillance in such environments. Axis Communications documents and product guides frequently highlight this advantage for corridor format applications.

An explosion-protected camera is specifically designed to contain any internal explosion within its housing. This type of camera is built to operate in hazardous environments where flammable gases or dust may be present. The robust housing prevents the internal explosion from igniting the surrou

nding atmosphere, thereby ensuring safety. Axis Communications offers explosion-protected cameras that adhere to stringent safety standards to prevent ignition and ensure reliable operation in dangerous conditions, as detailed in their product specifications.

AXIS Device Manager is the tool that enables easy upgrade of device firmware. It provides a comprehensive solution for managing multiple Axis devices, including firmware upgrades, configuration, and maintenance. AXIS Device Manager allows administrators to schedule and deploy firmware updates efficiently across multiple devices, ensuring that all devices are running the latest firmware with minimal downtime. This information is confirmed by Axis Communications' documentation on device management tools.

Privacy masks in an Axis camera can be activated and deactivated per stream profile. This allows for flexibility in managing different viewing needs and ensuring privacy in specific scenarios. Users can configure privacy masks to appear in one stream but not in another, making it a versatile feature for various applications. Axis Communications' documentation on privacy masks confirms this capability.

The product selector tool for Axis products enables system designers to design a complete surveillance system and generate a bill of materials. This tool helps in selecting the appropriate cameras, accessories, and software based on specific project requirements, ensuring all necessary components are included for a functional setup. Axis Communications offers this tool on their website, supported by detailed documentation and tutorials to assist users in the system design process.

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Typically, a system designer calculates the pixel density based on the horizontal resolution and the field of view. Pixel density is crucial in determining the level of detail a camera can capture in a specific area. Horizontal resolution refers to the number of pixels along the horizontal axis of the image sensor, while the field of view is the extent of the observable area captured by the camera. This calculation helps in ensuring that the camera setup meets the surveillance requirements.References: Axis Communications Design Tool

Zipstream’s Dynamic GOP (Group of Pictures) conserves bandwidth and storage by skipping new I-frames if the scene is unchanged. I-frames (intra-coded frames) are larger than P-frames (predictive frames) and B-frames (bi-directional frames) because they contain the full image data. By reducing the frequency of I-frames when there is no motion or change in the scene, Zipstream significantly lowers the data rate without compromising image quality. Axis documentation explains how Zipstream’s Dynamic GOP feature optimizes video encoding to conserve resources effectively.

Lowering the shutter speed can produce motion blur because the camera sensor is exposed to light for a longer period, capturing the movement of objects within the frame. This results in a blurry representation of moving objects, which can be useful for artistic effects but undesirable for capturing fast-moving subjects clearly. References: Axis Communications camera user guides and image capture documentation.

If an object is placed 1 meter (3 feet) away from a light source with a lux level of 3200 lux, the lux level decreases according to the inverse square law of light. At a distance of 8 meters (24 feet), the lux level can be calculated as:

New Lux Level=3200 lux(8/1)2=3200 lux64=50 lux\text{New Lux Level} = \frac{3200 \text{ lux}}{(8/1)^2} = \frac{3200 \text{ lux}}{64} = 50 \text{ lux}New Lux Level=(8/1)23200 lux​=643200 lux​=50 lux

Thus, at 8 meters, the light intensity drops significantly to 50 lux.

Maintenance is essential for ensuring the optimal performance of outdoor cameras running video analytics. Regular maintenance tasks include cleaning the camera lens, checking and updating firmware, inspecting connections, and verifying that analytics software is functioning correctly. These activities help maintain image quality and ensure the accuracy and reliability of the video analytics. Axis installation and maintenance guides recommend routine maintenance to prevent performance degradation and extend the lifespan of the equipment.

A video encoder effectively turns an analog camera into a network camera by converting the analog signal to a digital format, which can then be transmitted over a network. Additionally, video encoders add intelligent functionality found in network cameras, such as motion detection, event management, and video analytics capabilities. These features enable legacy analog systems to integrate with modern IP-based surveillance solutions. References: Axis Communications product documentation on video encoders.

When using AXIS People Counter, the camera lens must be facing straight down. This positioning ensures the most accurate counting of people as they pass through the monitored area. The overhead view eliminates obstructions and provides a clear field of vision directly below the camera, which is essential for precise counting. This recommendation is verified by Axis Communications' guidelines on deploying the AXIS People Counter application.

To wire an external 12V relay to the output port of an Axis camera, the GND and I/O1 pins should be used. The GND (ground) provides the necessary electrical return path, and the I/O1 pin is used for the output signal to control the relay. According to Axis technical documentation, these connections allow for proper integration and control of external devices such as relays, ensuring they function correctly with the camera's output capabilities.

As a person enters the scene, P-frames (Predictive frames) increase in size. P-frames contain only the changes in the image from the previous frame (I-frame or another P-frame). When there is movement or new objects enter the scene, more data is needed to describe the changes, resulting in larger P-frames. References: Axis Communications documentation on video compression and frame types in H.264.

If a PoE (Power over Ethernet) switch is unable to supply sufficient power to a network device, a midspan, also known as a PoE injector, should be used. A midspan is an external device that adds power to the Ethernet cable, thus providing the necessary power to the network device. This is particularly useful when existing network infrastructure cannot be upgraded to meet power requirements. According to Axis documentation, midspans are recommended to ensure adequate power delivery for network devices that require PoE.

Closing the aperture at a fixed focal length increases the f-number (aperture value), resulting in a longer depth of field. This means that a greater portion of the scene will be in focus, both in the foreground and background. A higher f-number indicates a smaller aperture, which allows less light to enter the lens but enhances the sharpness and clarity of the image over a larger depth. References: Axis Communications camera optics and image quality documentation.

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AXIS Site Designer offers various types of reports to assist in project planning and implementation. These include:

License keys report: Provides details on all license keys required for the project.

Installation report: Offers a comprehensive overview of installation details, including camera placements and configurations.

Bill of materials: Lists all the hardware and components needed for the project, ensuring that nothing is overlooked during the procurement process.

These reports help streamline the design, installation, and management of surveillance systems.References: AXIS Site Designer

Pixel density describes the number of pixels per meter (or foot) horizontally. This metric is crucial for determining the level of detail that a camera can capture over a given area, affecting the clarity and usability of the video for tasks such as identification and recognition. Higher pixel density results in better image detail. Axis Communications' technical resources on image quality and resolution confirm this definition of pixel density.

Session Initiation Protocol (SIP) is used to set up peer-to-remote calls, peer-to-peer calls, and SIP trunk calls. SIP is a signaling protocol widely used for initiating, maintaining, and terminating real-time communication sessions, including voice, video, and messaging applications. It facilitates communication between endpoints, whether they are directly connected or through a SIP trunk. Axis Communications' technical documentation on SIP and VoIP solutions confirms these uses.

Lightfinder is a technology developed by Axis that allows cameras to maintain color images even in very low light conditions. In dark scenes, Lightfinder automatically adjusts the exposure when an object approaches, enhancing visibility and detail. This feature is particularly useful for capturing clear images in challenging lighting environments without requiring additional lighting. References: Axis Communications product specifications and technical descriptions of Lightfinder technology.

To prevent reflections from built-in IR illuminators from degrading the image quality, an installer can adjust the camera's field of view. By repositioning the camera or slightly altering its angle, the installer can minimize the direct reflection of IR light back into the lens, which often causes glare and reduces image clarity. Axis installation guidelines recommend adjusting the camera’s position to avoid reflective surfaces and ensure optimal use of IR illumination for clear, unobstructed images.

RAID (Redundant Array of Independent Disks) and NAS (Network Attached Storage) are two common methods to extend server storage for video. RAID allows for increased storage capacity and data redundancy by combining multiple hard drives into a single logical unit, improving performance and fault tolerance. NAS provides additional storage over the network, enabling easy expansion and accessibility for video data. Both solutions are widely used in video surveillance systems to ensure ample storage and data reliability. This information is verified from Axis Communications’ best practices and technical guidelines on storage solutions for video surveillance.

The AXIS P3247-LVE provides the greatest deterrence effect. This model is a robust, vandal-resistant network camera designed for outdoor use with advanced features such as IR illumination, advanced video analytics, and a rugged design. Its visible presence and high-quality image capture capabilities serve as a strong deterrent to potential intruders and vandals.

Axis cameras offer several advanced focus technologies to enhance image clarity and ease of use. Focus Pinpoint allows for precise manual focus adjustments, ensuring sharpness in critical areas. Focus Recall enables cameras to remember and quickly return to pre-set focus positions, which is useful for surveillance scenarios where the camera frequently moves between different points of interest. According to Axis documentation, these technologies are designed to improve the accuracy and efficiency of camera setup and operation.

A PoE switch with a power budget of 90 W can power 12 class 2 devices. Class 2 PoE devices typically require up to 7.5 W each. By dividing the total power budget (90 W) by the power requirement per device (7.5 W), we get 12 devices. This calculation aligns with the PoE standards defined in IEEE 802.3af/at, as outlined in Axis Communications' technical resources.

For AXIS P3247-LVE, the last digit '7' indicates the camera resolution. Axis uses a numerical system where the last digit often denotes the resolution of the camera. In this case, '7' represents a camera with a resolution of 5 MP (megapixels), providing high-quality video surveillance suitable for detailed monitoring.References: Axis Communications Camera Naming Convention

The maximum power level at the powered device for PoE class 2 is 6.49 W. Power over Ethernet (PoE) class 2 devices are designed to consume between 3.84 W and 6.49 W. This classification helps ensure that network devices receive the appropriate power levels required for their operation.

The Sharpdome technology allows PTZ cameras to maintain a sharp image even when pointed above the horizon. This feature uses a specialized mechanical design and advanced image processing to ensure clear, undistorted images across the entire dome, including the critical area above the horizon. Axis Communications has integrated Sharpdome technology into several of their PTZ camera models, as explained in their product specifications and technical white papers.