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Text version of the page
| eneral Re uirements Like laser scanner-based systems, camera-based systems have certain necessary components. The modular camera system requires a method or devices to monitor the following: ■ Transport speed ■ Package detection ■ Package height detection | ||||||||||||||||
| Transport speed can be monitored in one of three ways: ■ using an external tachometer attached to the transport, ■ a direct tach signal from the transport, or | ||||||||||||||||
| Package detection can be monitored in one of three ways: ■ a photoeye, or ■ a light curtain, which also provides the package height information needed to focus the camera, or ■ a dimensioning device (set to emulate a light curtain in camera tunnel applications), When package height detection is accomplished via a light curtain, a resolution of 0.25 inch is required. Light curtain resolutions greater than 0.25 inches can degrade focus quality of an image. | ||||||||||||||||