Specification
| Angle Measurement | Accuracy | N41: 1”
N40: 2” |
| Minimum Reading | N41: 0.1”/1”
N40: 1”/5” |
| Measure Method | Absolute Encoding Disk |
| Diatmeter of Encoding Disk | 79mm |
| Detection Method | Horizontal: 4-path, Vertical: 4-path |
| Angle Unit | 360°/400gon/6400mil |
| Horizontal 0/Vertical 0 | V0/H0 |
| Distance Measurement | Laser Class | Laser Class 3R① |
| Wavelength | 685nm |
| Distance Unit | m/ft |
| EDM System | Basic Frequency 70-150MHz |
| Constant K | Auto Correction, K=0.14/0.2 |
| Prism Constant | Auto Correction |
| Atmosperic Correction | Auto Correction |
| Accuracy: Prism | N41: 1+1ppm
N40: 2+2ppm |
| Accuracy: Reflective Sheet | 3+2ppm |
| Accuracy: Reflectorless | 3+2ppm⑤ |
| Measure Range: Prism② | Single: 4000m / Triple: 5000m |
| Measure Range: Prism Enhanced | Single: 5000m / Triple: 6000m |
| Measure Range: Reflective Sheet③ | 1200m |
| Measure Range: Reflectorless④ | 1000m |
| Meaasure Speed: Prism | Single <1.2s, Repeat <0.5s, Tracking <0.25s |
| Meaasure Speed: Reflective Sheet | Single <1.0s, Repeat <0.5s, Tracking <0.25s |
| Meaasure Speed: Reflectorless | Single: 0.5s-3s; Tracking: 0.25s-3s, max.10s⑥ |
| Telescope | Image | Erect |
| Magnifcation | 30x |
| Effective Aperture | 45mm(DTM:47mm) |
| Resolution | 3″ |
| Field of View | 1°30′ |
| Minimum Focus | 1.5m |
| Tube Length | 152mm |
| Retical Illumination | Adjustable, 4 Levels |
| Vial | Plate Vial | 30“/2mm |
| Circular Vial | 8’/2mm |
| Compensator | System | Dual-axis Liquid-electric Sensor |
| Working Range | ±6’ |
| Resolution | 1” |
| Plummet | Laser Plummet: Laser Class | Class 2. Red Laser |
| Laser Plummet: Wavelength | 635nm |
| Laser Plummet: Power | 0.5mW |
| Laser Plummet: Diameter | ≤[email protected] |
| Laser Plummet: Brightness | Adjustable, 5 Levels |
| Auto Height *1*2: Measure Range | 0.5m-3m |
| Auto Height *1*2: Accuracy | ±[email protected] |
| Optical Plummet: Image | N41: –
N40: Erect |
| Optical Plummet: Magnifcation | N41: –
N40: 3x |
| Optical Plummet: Focusing Range | N41: –
N40: 0.3m~∞ |
| Optical Plummet: Field of View | N41: –
N40: ±4° |
| Guide Light*1 | Type | LED |
| Wavelength | Red 635nm / Yellow 590nm |
| Effective Distance | 200m |
| Camera*2 | Pixel | N41: 780,000
N40: – |
| Focal Length | N41: 16mm
N40: – |
| Sight of View | N41: 12.5*11.7 Degree
N40: – |
| Refresh Rate | N41: 11 Frames/s
N40: – |
| Depth of Field | N41: 2m-∞
N40: – |
| Storage | N41: jped
N40: – |
| Digital Zoom | N41: 1x, 2x, 3x
N40: – |
| White Balance | N41: Auto
N40: – |
| Brightness | N41: Auto
N40: – |
| Display Unit & Keyboard | Display Unit | 3.5 Inches Colorful LCD Touch Screen |
| Resolution | 320*240dpi |
| Backlight | Adjustable, 8 Levels |
| Keyboard | 30 Keys |
| Memory | Internal Memory | 98M, 120000 Points |
| External Memory | USB&SD Card Available, Maximum 32G |
| Data Transfer | USB, Mini USB, Bluetooth 2.1+EDR, SD Card, RS-232 |
| Power Supply | Type | LI-ION Rechargeable Battery |
| Voltage | 7.4V |
| Capacity | 3900mAh, 29wh |
| Working Time | 10 Hours |
| Charging Time | 3 Hours |
| Others | Working Temperature | -20°C~+50°C |
| Storage Temperature | -40°C~+70°C |
| Size | 206mm*200mm*353mm |
| Weight | 6kg |
①EN60825-1: 2007
②Good conditions: No haze, visibiliity about 40km. Overcast, no scintillation
③Good conditions. With Koada gray card white side (90%) reflective. standard sheet size. 300m under good conditions with koada gray card grey side (18%).
④With Kodak gray card white side (90%) reflective. Reflectorless range /accuracy may vary according to measuring objects, observation situations and environmental conditions ⑤Range less than 200m. When the measure range is over 200m, the accuracy will be 5+2ppm.
⑥Typical, under good conditions. Range less than 500m. It also depend on object surface. Maximum less than 10s
*1: Available on N41, N40X total station
*2: Available on N41I total station
