RTS673, RTS771, RTS773 and RTS873 EDM

The EDM, DR HP, is a laser distance unit based on the phase comparison method. The distance unit is coaxial with the line of sight and transmits an intensity modulated optical measuring beam that is reflected by a prism or scattered by a natural surface on which the beam is directed. The phase difference between the transmitted light and the reflected received light is detected and represents the distance.

In prism-mode, the DR HP unit operates as a fast and precise long-range distance meter. In DR-mode, the DR HP unit transmit a collimated visible red laser beam to the target point and then calculates the distance between the transmitted and the received light.

The DR HP distance unit software will detect erroneous single distance measurements such as those caused by an obstruction passing through the measurement beam, and will ignore such readings in the computation of the final distance.