| Scanner blocks for opposed, retro, diffuse, convergent, and fiber optic sensing modes; Most scanner blocks include Banner's exclusive, patented alignment indicating device system, which lights a top-mounted indicator LED whenever the sensor sees its own modulated light source, and pulses the LED at a rate proportional to the strength of the received light signal; Short range diffuse mode sensor with relatively wide field of view Loses gain rapidly near the end of its range; As a result, its response to background objects is suppressed; However, use caution when applying any diffuse mode sensor if background reflectivity exceeds the reflectivity of the object to be sensed; 3 and 4 wire system |
