Topcon GTS-823A - Manual (Page 114)

9-15
9 CHECK AND ADJUSTMENT
9.9 Inspection and Adjustment of Optic Axis for Auto -Tracking
Activates auto tracking to the prism.
Confirm if the center of telescope reticle and the center of the prism is coincided.
Any error between them requires adjustment according to the following procedure.
l Position a prism around 0 in horizontal and more than100m (328ft) apart from the GTS-820A
series.
l Take care not to be interrupted the optical path during measurement.
Operating procedure Operation Display
1 Level the instrument properly with the plate
level and press the [F5] key from main menu.
[F5]
2 Press the [F6] key to get the next page.
[F6]
3 Press the [F2] key to select the adjustment of
tracking axis.
[F2]
4 Operate H / V jog shuttle to collimate the
center of prism
Collimate
5 Press the [F6](MEAS) key.
The measurement starts.
[F6]
6 After the measurement, press the [F1](TURN)
key.
The instrument and telescope will turn
automatically.
[F1]
7 Operate H / V jog shuttle to collimate the
center of prism
Collimate
Prism center
Telescope reticle center
Centers of prism
and telescope is shifted Normal position
Prism center
Telescope reticle center
Adjustment
F1 V0/Axis (Measurement)
F2 V0/Axis (Constant list)
F3 Date Time
F4 Instrument constant
↓
Adjustment
F1 FRQ check
F2 Adj Tracking Axis
↑
Adj Tracking Axis
[1/2]
>Sight the prism !!
TURN MEAS
Adj Tracking Axis
Wait
Adj Tracking Axis
[2/2]
>Sight the prism !!
TURN MEAS