Multiple Access Television. The method of distributing TV signals by broadcasting them through the air.
Megabits per second. A measure of bandwidth.
Multi-wire cable with Mini-DIN connectors at both ends. Usually has 4 inner wires. Pictures of Mini-DIN connectors.
Monochrome Signal :
Black and White signal.
MOD (Minimum Object Distance) :
The closest distance a lens will be able to focus upon an object. Wider angle (shorter focal length) lenses generally have a smaller MOD than larger focal length (narrower angle) lenses.
Metal-oxide Semiconductor. One of video image chips like CCD, but it produces lower quality video.
Motorized Lens :
A camera lens equipped with small electric motor that enables focusing lens, opening or closing the iris diaphragm, or changing the focal length.
Moving Picture Experts Group. A standard for a digital video & audio compression.
This is a device that takes inputs from 2 or more video channels and combines them into one signal. This is often done by using time division multiplexing, which interleaves frames from each channel in such a way that they can be split out again. Frequency division multiplexing uses different frequencies to achieve the separation of the signals.
Mega Pixel Resolution :
Mega Pixel resolution refers to video resolutions now achievable using IP Cameras. Unlike Analogue cameras, whose resolution is usually limited to around 752 x 582 (0.4 Mega Pixels), a Mega Pixel IP Cameras can achieve far greater resolutions such as 1280 x 1024 (1.3 Mega Pixels) or 1600 x 1280 (2 Mega Pixels). This increase in resolution produces far better image quality than a traditional analog camera could ever achieve.
Motion Detection :
Recording method for digital surveillance systems. When someone walks in front of a camera, the pixels change and the DVR defines this as motion. The surveillance system will then record these images to the hard disk. This is a popular recording setup as every event recorded is actually motion driven as opposed to a static image if the system was set to record 'round-the-clock'.
Magnetic Contact :
A device that sends a signal when the magnetic field between two monitored points is broken.
A door lock made up of an electromagnet and a strike plate. The electromagnet is mounted in the door frame; the strike plate in the door. When power is applied to the electromagnet, the strength of the electromagnet keeps the door locked.
An access control card with a strip of recordable magnetic material, on which data is encoded. Magnetic Stripe Reader, A reader capable of reading and interpreting cards using magnetic stripes to encode data.
An access control card that grants access and exit at every card reader on the system.
The section of a host computer or a controller in which data and instructions are stored.
A communication device that converts computer serial data to an analog format that can be transmitted and received via telephone.