Topcon GPT-8001A User Manual

10 SETTING THE PRISM / NON-PRISM CONSTANT VALUE
10-1
10 SETTING THE PRISM / NON-PRISM CONSTANT
VALUE
The prism constant value of Topcon is set to zero. When using prism other than Topcon's, it is neces-
sary to set the prism constant correction value of that specific prism.
Once you set the correction value for prism constant, it is retained after power is OFF.
•Setting the prism constant value is in the STAR key mode.
•Setting example : The prism constant value : -14mm
Note:
Confirm the non-prism constant value is set at 0 when measuring target such as walls in
Non-prism mode.
Operating procedure Operation Display
1
Press STAR ( ) key.
GPT-8000A series should be changed the
menu of star key mode to page three by
pressing the [F6] key twice.
[]
2
Press the [F3](GPT-8000 series) or [F2](GPT-
8000A series) key.
Current setting value is displayed.
[F3]
or
[F2]
3 Move the cursor (>) to psm setting by
pressing [F5]((→, ←) key or [F6](
↓
,↑) key.
Move
cursor
4
Input the Prism constant correction value and
press the [ENT] key.
*1)
Enter
value
[ENT]
The display returns STAR key menu.
*1) Input range : -99.9mm to +99.9mm, 0.1mm step
20
02-08-10 14:30:40
1 ↓
GPT-8000 series
NP/P
2002-08-10 14:30:40
3
↓
GPT- 8000A series
20.0 °C
5.1ppm
0.0 mm
1012.0hPa
23.6 mm
Non-Prism constant correction icon
Prism constant correction icon
20.0 °C
5.1ppm
+14.0 mm
1012.0hPa
23.6 mm

Topcon GPT-8001A Specifications

General

Brand	Topcon
Model	GPT-8001A
Category	Measuring Instruments
Language	English