Topcon GPT-2003 Marine Instruments User Manual


 
23 SPECIFICATIONS
23-1
23 SPECIFICATIONS
Telescope
Length : 150mm
Objective lens : 45mm (EDM 50mm)
Magnication : 30×
Image : Erect
Field of view : 1°30'
Resolving power : 2.5"
Minimum focus : 1.3m
Reticle illumination : Provided
Distance measurement
Measurement range
Non-prism mode (Target: White wall)
Prism mode
Condition 1: Sight haze with visibility about 20km (12.5miles) moderate sunlight with light heat
shimmer.
Measurement accuracy
Non-prism mode (Diffusing Surface)
GPT-2003/2005/2006/2009
3 to 25m (9.8 to 82ft) : ± (10mm) m.s.e.
25m or more (82ft or more) : ± (5mm +2ppm × D) m.s.e.
D:Measuring distance (mm)
Prism mode
GPT-2003/2005/2006/2009 : ±(3mm +2ppm × D) m.s.e.
D:Measuring distance (mm)
Model
Atmospheric conditions
In low light condition and without
sun glare on target
GPT-2003
GPT-2005
GPT-2006
3 to 150 m (9.8 to 492 ft)
GPT-2009 3 to 100 m (9.8 to 328 ft)
Model Prism
Atmospheric conditions
Condition 1
GPT-2003
GPT-2005
GPT-2006
Mini prism 2,000m (6,500ft)
1 prism 7,000m (22,900ft)
GPT-2009
Mini prism 1,500m (4,900ft)
1 prism 4,000m (13,100ft)