Distance measurement (visible laser)

1. Type …………… red laser

2. carrier wave …………… 0.670μm

3. Measuring system …………… Basic frequency 60MHZ

4. EDMtype …………… coaxial

5. Display (least count) …………… 1mm

6. Laser facula …………… approx.7×14㎜ / 20m（reflectorless mode only）

approx.10×20㎜ / 50m

1. Accuracy

With reflector:

EDM measuring program	Accuracy Standard deviation	Time per measurement
fine	2㎜＋2ppm	＜1s
fast	3㎜＋2ppm	＜1.2s
tracking	5㎜＋2ppm	＜0.5s
IR-tape	5㎜＋2ppm	＜1.2s

Without reflector:

EDM measuring program	Accuracy Standard deviation	Time per measurement
Reflector less fine	5＋2ppm	＜1s
Reflector less tracking	10＋2ppm	＜0.5s

h.Range (20km visible normal condition)

With reflector

Atmospheric conditions	Standard prism	Reflector tape
5km(Haze)	1000m	300m
20km(Good weather)	5000m	800m

Without reflector

Atmospheric conditions	No reflector（white target）※	No reflector (grey,0.18)
Object in strong sunlight, severe heat shimmer	160m	100m
Object in shade, or sky overcast	200m	120m

Kodak Grey Card used with exposure meter for reflected light

Other Specification

Display	Max：999999.999ｍ Min：0.１ｍｍ
Unit	m/ft Selectable
Average measuring times	The average value of２～255 times
Meteorological Correction	Manual input, Auto correction
Atmospheric refraction and earth curvature correction	Manual input, Auto correction K=0.14/0.2 Selectable
Reflection prism correction	Manual input, Auto correction

Telescope	Image Erect Magnification ３０× Effective aperture ４５ｍｍ (EDM 48ｍｍ) Resolving power ４″ Field of view １°３０′ Minimum focus １ｍ Stadia ratio １００ Sight distance precision ≤０．４％Ｄ Tube length 154ｍｍ
Angle Measurement	Measuring method Photoelectric detection by incremental encoder Dia of circle (vertical, horizontal) 79ｍｍ Minimum reading １″／５″Selectable Detection method Horizontal： Dual Vertical ：Dual Measuring unit 360°／400gon／6400mil Selectable Vertical angle０° Zenith０°／Horizontal０°Selectable Accuracy NTS-352R：２″ NTS-355R：５″
Vial	Plate vial 30″／2ｍｍ Circular vial 8′／2ｍｍ
Vertical Compensator	System Liquid-electric detection/plate vial Compensation range ±３′ Resolving power １″
Optical Plummet	Image Erect Magnification 3× Focusing range 0.5ｍ～∝ Field of view ５°
Display	Type LCD，Four lines digital
Data Communication	Port ＲＳ－232c
On-board Battery	Power resource Rechargeable Ni-H battery Voltage DC６Ｖ Type of battery NB－20B Battery NB—20C Battery (Selectable) Continuous operation time 8hrs(small battery) 10hrs(big battery)
Operation Environment	Operating temperature －20°～＋50℃
Size & weight	Dimension 160×150×330ｍｍ Weight (Exclude Battery) 5.2ｋｇ