Topcon GPT-7500 Series User Manual

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17 SPECIFICATIONS
17 SPECIFICATIONS
Telescope
Length : 150mm (GTS-750)
165mm (GPT-7500)
Objective lens : 45mm (EDM 50mm)
Magnification : 30×
Image : Erect
Field of view : 1°30'
Resolving power : 2.8" (GTS-750)
3" (GPT-7500)
Minimum focus : Not above 1.3 m
(distance from the center of rotation of the telescope)
Reticle illumination : Provided
Distance measurement
Measurement range (GTS-750 series)
Condition 1: Slight haze with visibility about 20km (12.5miles) moderate sunlight with light heat
shimmer.
Condition 2: No haze with visibility about 40km(25 miles), overcast with no heat shimmer.
Measurement range (GPT-7500 series)
• Prism mode
Condition 1: Slight haze with visibility about 20km (12.5miles) moderate sunlight with light heat
shimmer.
Condition 2: No haze with visibility about 40km(25 miles), overcast with no heat shimmer.
• Non-prism mode
Model Prism
Atmospheric conditions
Condition 1 Condition 2
GTS-751
GTS-752
GTS-753
Mini prism 1,000m (3,300ft) ----
1 prism 3,000m (9,900ft) 3,500m (11,500ft)
3 prisms 4,000m (13,200ft) 4,700m (15,400ft)
9 prisms 5,000m (16,400ft) 5,800m (19,000ft)
GTS-755
Mini prism 900m (3,000ft) ----
1 prism 2,000m (6,600ft) 2,300m (7,500ft)
3 prisms 2,700m (8,900ft) 3,100m (10,200ft)
9 prisms 3,400m (11,200ft) 4,000m (13,200ft)
Prism
Atmospheric conditions
Condition 1 Condition 2
Mini prism 1,000m (3,280ft) ----
1 prism 3,000m (9,842ft) 4,000m (13,123ft)
3 prisms 4,000m (13,123ft) 5,300m (17,388ft)
9 prisms 5,000m (16,404ft) 6,500m (21,325ft)
Target
Atmospheric conditions
In low light condition and without sun glare on target
Kodak gray card
(White surface)
1.5m to 250 m (5 to 820 ft)

Topcon GPT-7500 Series Specifications

General

Brand	Topcon
Model	GPT-7500 Series
Category	Measuring Instruments
Language	English