9 CHECK AND ADJUSTMENT
9-15
9.8 Inspection and Adjustment of Optic Axis for
Auto -Tracking (GPT-8000A Series)
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.
Prism center
Telescope reticle center
Centers of prism
and telescope is shifted
Normal position
Prism center
Telescope reticle center
• Position a prism around 0 in horizontal and about 50m to 100m (164 to 328ft) apart from the
GPT-8000A series.
• 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 [F1] key to select the adjustment of
tracking axis.
[F1]
4
Operate H / V jog shuttle to collimate the
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
prism
Collimate
Adjustment
F1 V0/Axis (Measurement)
F2 V0/Axis (Constant list)
F3 Date Time
F4 Instrument constant
↓
Adjustment
F1 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
Summary of Contents for GPT-8000 Series
Page 89: ...5 PROGRAM MODES 5 28 ...
Page 124: ...11 SETTING ATMOSPHERIC CORRECTION 11 4 ...