Laser & Survey Solutions

NET 1200

The NET 1200 incorporates a new ultra-high performance EDM and reliable absolute encoders. Sokkia has established new standards in all areas-precision, range, speed, ease of operation, mobility and weather-resistance

Highlights

Unique optical system offering the highest measuring in its class
Internal memory offering large measurement data storage capacity
Large displays screen and customisable keyboard
Automatic dual-axis level compensatory and colimation for outstanding measurement precision

One-second precision

NET1200 employs original absolute encoders with new algorithms. One-arc second angle accuracy is equal to 0.5mm (0.2in.) at 100m (330Ft.) and 1mm (0.4in.) at 200m (650ft.). By minimizing the angle measurement error, total accuracy of 3-D coordinates has been remarkably improved.

Ultra-high performance EDM

Sokkia has developed a new EDM with state-of-the-are digital signal processing and sophisticated optical technologies. It outperforms its predecessors in all fields such as range, speed and precision.

Ideal telescope

The telescope of NET 1200 provides an image unrivaled in both brightness and sharpness. By redesigning the optics and mechanics, the telescope has been made smaller allowing operators wearing hard hats to perform sighting with greater comfort and ease.

Laser-pointer and target illumination functions

These two new functions greatly facilitate operation in the field.

Telescope
Length	171mm
Objective aperture	45mm (1.8 in.) (EDM: 48mm (1.9 in.)
Magnification	30x
Resolving power	2.5" or better
Field of view	1° 30' (26m/1,000m)
Minimum focus	1.3m(4.3 ft.)
Reticle illumination	5 brightness levels
Angle Measurement
Type H&V	Photoelectric absolute encoder scanning. Both circles adopt diametrical detection
Display resolutions (selectable)	0.5"/1",0.1/02.mgon,0.002/0.005mil
Accuracy	1"/0.3mgon/0.005mil
Automatic dual-axis compensator	Dual-axis liquid tilt sensor. Working range: ±3' (±55mgon)
Display mode H&V	Clockwise/counterclockwise selectable Zenith 0°/horizontal 0° selectable
Distance Measurement
Light source	Modulated Near-infrared light-emitting diode
Measuring range	2m(6.6ft) to 100m(328ft) (RS90 reflective sheets target)50m(164ft) to 1000m(3,280ft)(using CPS12 high-precision reflective prism)
Minimum resolution - Fine measurement	0.0001m/0.001m(0.001ft/0.01ft)selectable
Minimum resolution - High-speed measurement	0.001m(0.01ft)
Tracking	0.01m(0.1ft)
Accuracy	± (0.8mm + 1ppm x D)mm, reflective sheet target; ±(2.0+2ppm x D)mm (using CPS12 high precision reflective prism.
Measuring time - Fine measurement	Every 4.7s (initial meas. 6.5s)
Measuring time - High-speed measurement	Every 3.3s (initial meas. 5.0s)
Display range	0.0001 to 1599.9999m(5249.3332ft)
Atmospheric correction	Selectable (1) Direct key-in of temperature and pressure (hPa/mmHg)(2) Direct key-in of temperature, pressure (hPa/mmHg) and humidity (3) Direct key-in of ppm (4) No correction
General
Display	Alphanumerics, graphics Dot matrix LCD on each face 20 chars. x 8 lines, 120 x 64 dots, Non-reflective glass, backlight
Keyboard	28 Latex keys on each face (numeric, cursor, edit, power, softkey function, illumination)
Sensitivity of levels - Plate level	20"/2mm
Sensitivity of levels - Circular level	10'/2mm
Optical plummet	Image: erect. Magnification: 7x. Minimum focus: 0.5m
Standing (vertical) axis	Independent double-axis
Battery level display	4-stage power codes, with message display
Automatic power cut-off	30 minutes after last operation, ON/OFF selectable
Data storage Internal memory capacity	448KB (Approx. 3,000 points)
Interface	Asychronous serial, RS-232C compatible, Centronics compatible
Operating temperature	-10°C to +40°C (14°F to 104°F)
Water resistance	IPX2 (Based on IEC 529/1989)
Size with handle and BDC35 battery	177(W) x 165(D) x 371(H) mm (7.0(H) x 6.5(D) x 14.6(H) in.)
Instrument height (horizontal axis height)	236mm (9.3 in.) from tribrach bottom, 193mm (7.6 in.) from tribrach dish
Weight	6.1kg (13.4 lb.)(including handle and battery)
Power supplies
Voltage	7.2V DC
BDC46A detachable battery	Li-Ion rechargeable battery, 2 BDC46A are included as standard accessories
Continuous use per battery	About 6 hours single measurement every 30 seconds at 25°C (77°F), laser-pointer and target illumination off)
Recharging time per battery	Less than 2 hours with CDC61/62/64
BDC12 external Ni-Cd battery (optional)	Continuous use about 22.5 hours single measurement every 30 seconds at 25°C (77°F)

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