Topcon GPT-2000 用户手册

3-1

   3 ANGLE MEASUREMENT

Make sure the mode is in Angle measurement.

Collimate the 1st target (A).

Collimate A

Set horizontal angle of target A at 0° 00' 00".
Press the [F1](0 set) key and press the [F3](YES) 
key.

[F1]

[F3]

Collimate the 2nd target (B).
The required V/H angle to target B will be
displayed.

Collimate B

Point the telescope toward the light. Turn the diopter ring and adjust the diopter so that the cross 
hairs are clearly observed.
(Turn the diopter ring toward you first and then backward to focus.)

Aim the target at the peak of the triangle mark of the sighting collimator.  Allow a  certain space 
between the sighting collimator and yourself for collimating.

Focus the target with the focusing knob.

*If parallax is created between the cross 

hairs and the target when viewing 
vertically or horizontally while looking 
into the telescope, focusing is incorrect 
ordiopter adjustment is poor.  This 
adversely affects precision in 
measurement or survey Eliminate the 
parallax by carefully focusing
and using diopter adjustment.

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Focusing knob

Telescope eyepiece (Diopter ring)

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