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50 Rev. D7 Jul 2017 Marathon MM
8.2 Video Sighting
The Marathon MM unit has optional video sighting. Video sighting is intended as a convenient way to
verify correct sighting of the Marathon MM unit. Video sighting also allows for either video or frame
capture of the process, enhancing process documentation.
Video Specifications:
Pixels: 510 x 492
Field of View 8°
Focus equal the focal distance of the IR channel
(for units with fixed and variable focus)
Composite Video Output Format: NTSC (analog)
Signal – Noise Ratio: 40 dB
Fixed Noise: 0.03% Vpp
Ambient Temperature Range: 5 to 50°C (41 to 122°F)
Minimum Required Illumination: 5 Lux
Impedance: 75
Cable Connection Type: BNC
Maximum Analog Video Cable Run: 100 m (328 ft.)
The video sighting option is integral to the sensor electronics, so no additional installation is required.
The unit utilizes an industry-standard BNC connector for the video output.
Figure 29: Wiring the Video Output
Analog Display Monitors
The analog NTSC video output can be feed directly to any monitor that accepts this video format. If
NTSC video monitors are not locally available, there are commercially available devices that convert
NTSC format into PAL or SECAM formats.
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