Nikon DTM-330 - Main Body; Specifications

5-1
5
SPECIFICATION
5. SPECIFICATIONS
5-1 Main Body
 Telescope
Tube length: 152mm/5.98in.
Magnification: 28X
Effective diameter of objective: 38mm/1.50in. (EDM: 40mm/1.57in.)
Image: Erect
Field of view: 1°34’ (2.7m at 100m/2.7ft. at 100ft.)
Resolving power: 3.5”
Focusing distance: 1.2m/47.2in. to
∞
Focusing method: Anallactic focusing
 Angle measurement
Reading system: Photoelectric incremental encoder
(Diametrical detection for H/V circles)
Circle diameter (reading): 88mm/3.46in. (79mm/3.11in.)
Minimum display increment
360°: 1”/5”
400G: 0.2mgon/1mgon
MIL6400: 0.005MIL/0.02MIL
DIN18723 accuracy: 5”/1.5mgon
 Dual-axis tilt sensor (DTM-330: Single axis)
Method: Liquid-electric detection
Compensation range: ±3’
 EDM
Distance range with Nikon prisms
Under normal atmospheric conditions (ordinary haze with visibility about
20km/12.5miles)
With single prism: 1,200m/3,900ft.
With triple prism: 1,600m/5,300ft.
Under good atmospheric conditions (no haze with visibility over 40km/25miles)
With single prism: 1,500m/4,900ft.
With triple prism: 2,100m/6,900ft.