Topcon GPT-2005 Manuel D’Utilisation

   17 CHECK AND ADJUSTMENT

17-10

If when measuring  the vertical angle of target A at telescope position normal (direct) and reverse 
settings, the amount of normal and reverse measurements combined is other than 360° (ZENITH-0), 
half of the difference from 360° is the error amount from corrected 0 setting. Carry out adjustment. As 
adjustment for vertical angle 0 setting is the criteria for determining instrument coordinate origin, use 
special care for adjustment.

Level the instrument properly with the
plate level.

While pressing the [F1]key, turn power  switch ON.  

[F1]

+

Power ON 

Press the [F1] key.

[F1]

Collimate target A from the telescope properly in 
normal setting.  

Collimate A

(Normal)

Press the [F4](ENTER) key.

Collimate target A in reverse telescope setting.

[F4]

Collimate A

(Reverse)

Press the [F4](ENTER) key.
Measured value is set and  carry out normal angle 
measurement. 

[F4]

Check that the total amount of normal and reverse 
angular travel  is 360° collimating the target A by 
normal and reverse positions.

  

  

  

  

  

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