Topcon GTS-823A - Manual (Page 37)

3-2
3 AUTOMATIC TRACKING / AUTOMATIC COLLIMATION
4 Choose measuring modes by pressing the
soft keys.
Measuring starts.
Sample: Horizontal distance measuring
[F2]
l If the target prism is lost during auto tracking status, the instrument will automatically change to Waiting
status and symbol mark will be switched. If the target is found during Waiting status, tracking resumes,
and if not, status changes to Searching status. When the target prism is found, tracking will resume.
l The following symbol marks are indicated at the right side of the display.
In all these status, laser beam is emitting.
l Auto tracking status sometimes can be unstable for a few seconds after the optical path is disturbed.
l If the center of reticle and the center of the prism is not coincided, you should adjust optical axis for
auto-tracking, refer to chapter 9"Check and adjustment".
l In the not suitable operating condition in such the atmospheric condition is not good by the heat
shimmer, or other bad weather condition, in the long distance of the auto-tracking limit, can be
happened not certain tracking or not tracking at the center of the prism.
V : 90°10'20"
HR: 120°30'40" PSM 0.0
HD: < PPM 0.0
VD: (m) *c.R
MEAS MODE VH SD NEZ P1
↓
Star key
mode
Tracking
status
Waiting status
The target prism is lost
The target prism is not found
for some time
Searching status
Automatic tracking
Normal
mode
F1
The target prism
is found
Tracking status
Waiting status
Searching status