58 en Glossary of CCTV Terms

AutoDome Modular Camera System

 

 

M

MJPEG

Motion JPEG is a digital video encoding standard where each video frame is separately compressed into a JPEG image.

Modal Dispersion (or Intermodal Dispersion)

A broadening of a waveform over long distances. Modal dispersion occurs in multimode fibers, because light is bounced down different reflective paths (e.g. modes) in the fiber. As the distance increases, the path (mode) begins to spread and the arrival time for the different light rays begins to vary. A large variance (dispersion) increases the chance that the optical receiver may interpret the incoming signals incorrectly. Modal dispersion is a major problem with multimode fibers.

MPEG-4

A digital video encoding and compression standard that uses interframe encoding to significantly reduce the size of the video stream being transmitted. With interframe coding, a video sequence is made up of keyframes that contain the entire image. In between the keyframes are delta frames, which are encoded with only the incremental differences. This often provides substantial compression because in many motion sequences, only a small percentage of the pixels are actually different from one frame to another.

Multimode Fiber

An optical fiber with a larger core (typically 50 or 62.5 microns) than singlemode fiber. The core can be made of plastic or glass fibers and it is the most commonly used fiber for short distances such as LANs. The name multimode comes from the fact that light rays travel down multiple reflective paths (modes) within the fiber. This allows light to enter the core at different angles, making it easier to connect to broader light sources such as LEDs (light emitting diodes). Fiber optic interfaces and multimode fiber-based transmission systems are less expensive than those based on singlemode fiber. However, the use of multiple reflective paths (modes) increases modal dispersion (see Modal Dispersion) and shortens the distances that this type of fiber optic transmission system can span.

Multi-Protocol

A protocol is a convention or standard that controls or enables the connection, communication, and data transfer between two devices. In PTZ cameras such as the AutoDome, protocol refers to the standard used to control the pan, tilt, and zoom (PTZ) operation of the camera. Since each dome camera manufacturer’s PTZ protocols are unique, multi-protocol support is needed to support third party dome systems. AutoDome cameras support the Pelco “D” and “P” protocols and well as Bosch’s own biphase protocol (See Biphase).

F01U064036 1.0 2007.01

VG4-200, VG4-300, VG4-500i Series User’s Manual

Bosch Security Systems, Inc.

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Bosch Appliances VG4-500I, VG4-200, VG4-300 Modal Dispersion or Intermodal Dispersion, Multimode Fiber, Multi-Protocol
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VG4-500I, VG4-200, VG4-300 specifications

Bosch Appliances is renowned for its commitment to quality and innovation, and their VG4 series of ventilation hoods is no exception. The VG4-300, VG4-200, and VG4-500I models are designed to cater to various kitchen needs, providing effective air filtration while maintaining aesthetic appeal.

The VG4-300 model is characterized by its sleek design and robust performance. It features a powerful motor that delivers efficient ventilation, removing smoke, odors, and grease from your kitchen swiftly. One of the standout features is its three-speed fan system, which allows users to select the appropriate level of airflow based on cooking intensity. Additionally, the grease filter is dishwasher-safe, ensuring easy maintenance and longevity.

In contrast, the VG4-200 model is perfect for those seeking a compact yet powerful solution. Designed for smaller kitchens, it doesn’t compromise on performance. This model also offers a three-speed fan, providing sufficient airflow for everyday cooking activities. The LED lighting integrated into the design enhances visibility on your cooktop while adding a modern touch to your kitchen. With a focus on energy efficiency, the VG4-200 operates quietly, allowing for a pleasant cooking experience without distraction.

The VG4-500I model is a standout in the series, designed for larger, more demanding kitchens. With increased airflow capacity, it can handle vigorous cooking styles with ease. It also boasts an advanced filtration system that captures more airborne particles, enhancing indoor air quality. The model features a touch control panel for ease of use, giving users the ability to adjust settings seamlessly. Like its counterparts, the VG4-500I includes LED lighting and dishwasher-safe filters, making maintenance straightforward.

All three models in the VG4 series exemplify Bosch's dedication to advanced technologies. Noise reduction features ensure that the ventilation system operates quietly, allowing conversations in the kitchen without disturbance. Furthermore, the stylish and modern finishes of each model enhance kitchen aesthetics, making them suitable for any decor.

In summary, Bosch Appliances’ VG4-300, VG4-200, and VG4-500I ventilation hoods offer a range of features tailored to meet different culinary needs. From effective air filtration and energy-efficient operation to user-friendly controls and elegant designs, these models are crafted to elevate the cooking experience while ensuring a fresh and clean kitchen environment.
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