Southern Surveying and Mapping Instrument (accessories: wooden tripod, single prism set, prism tripod, prism rod) Model: H93 / 360R-362R Product introduction Angle measuring principle The angle measurement of the grating disk requires two plates. The silicon photocell is used as the receiver. The absolute code plate angle measurement needs to be initialized. One plate uses the CCD as the receiver. It is simpler and more stable. Same as NTS-360L, only the light-emitting tube uses a visible red laser tube, the power of the light-emitting tube is 10mw, which is intuitively visible, and the principle of prism-free range measurement is 300 meters. The principle of gallium arsenide light-emitting diode is used. , The receiving area is slightly smaller, the infrared laser tube has a small launch angle, good collimation, point-receiving surface reception, large receiving and storage area, ranging time, precise measurement for 3 seconds, tracking for 1 second, precise measurement for 1 second, tracking for 0.5 seconds, ruler 15MHz, The precision measuring ruler is 10 meters long, A total of three measuring rulers (transmitting 3 frequencies) 60MHz, precise measuring ruler 2.5 meters long, more accurate, a total of five measuring rulers (transmitting 5 frequencies) Range Single Prism 2Km Single Prism 5Km Distance measuring circuit performance: Light tube power: 1mw Circuit magnification: 1000 times single motor dimming phase measurement method: square wave single point sampling