COMPATIBILITY: The SDR31 includes an instrument cable which works with Sokkia total stations and digital levels and Topcon total stations. The firmware in the SDR31 lists the following choices of instruments in addition to the Sokkia Instruments:
Pentax: PTSII/III, III/V/PCS, PTS-10
Zeiss: Elta 2/3, Elta 46R, Elta RL, Elta 50, DiNi 10/20 digital level
Topcon: GTS/ET1/ET2, GTS-3, GTS300
Wild: T1000, T1000+DI, T1600, T1600+DI, T2000, T2000+DI, T1010/1610, T1010/1610+DI, TCA110, TC/TCM series, NA2000/3000 digital level
Nikon: A-series, D-5
