Topcon GPT-7500 Series, Instruction Manual

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3 STANDARD MEASUREMENT MODE
Non Prism Long Mode
•Fine mode : This is a normal distance measuring mode.
Measurement time : approx. 1.5~6 seconds
The unit to be displayed is 1mm. (0.005ft)
• Coarse mode : This mode measures in shorter time than in fine mode.
Use this mode for the objects which may be slightly unstable.
Measurement time : approx. 1~3 seconds
The unit to be displayed is 5mm. (0.015ft)
• Tracking mode : This mode measures in shorter time than in coarse 5mm mode.
Use this mode for stake out measurement. It is very useful when tailing the moving
object or carrying out stake-out work.
Measurement time : approx. 0.4 seconds
The unit to be displayed is 10mm. (0.02ft)
In the non-prism long mode, the measuring time largely depends on a distance to the target
object and the color (or reflectance) of the object. Especially when the measurement
distance is far, or when the reflectance of the measured surface is low, measuring time will
become longer.