Topcon GTS-823A User Manual
Page 39
3-4
3 AUTOMATIC TRACKING / AUTOMATIC COLLIMATION
3.3
Range of Laser for Auto-tracking and Auto-collimating
The range of laser at the long distance is within ±30' as shown in following. So you had better collimate
the prism so that the prism may be located within this range of laser in the first step. As for it, rapid
automatic collimating and automatic tracking becomes possible. If the target prism is out of this range,
time for searching mode will be necessary.
The range of the laser beam for auto-tracking in a short distance is same as a telescopic filed of view.
Therefore, quick starting of auto-tracking and auto-collimating are possible if the prism is contained in
the telescopic field of view.
Field of view
about ±30'
about ±30'
Range of laser