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| Arc 7 | Arc 7L | ||
| DISTANCE MEASUREMENT(GOOD WEATHER) | |||
| single prism | 5.0km | ||
| Mini prism | 3.0km | ||
| reflectorless | 600m 800m | ||
| accuracy | with prism: 2mm+2ppm; without prism: 3mm+2ppm | ||
| reading | max: 99999999.999 min: 0.1mm | ||
| measuring time | fine: 0.3s; tracking: 0.1s | ||
| atmospheric refraction & earth curvation correction | T-P sensor, Auto Detect and Correct | ||
| prism constant | manual input, auto correction | ||
| ANGLE MEASUREMENT | |||
| measuring method | absolute encoding | ||
| diameter of raster disk | 79mm | ||
| minimum reading | 0.1″/1”/5” selectable | ||
| accuracy | 2” | ||
| detection method | horizontal: dual vertical: dual | ||
| TELESCOPE | |||
| image | erect | ||
| tube length | 154mm | ||
| effective aperture | Telescope: 45mm; EDM: 50mm | ||
| magnification | 30X | ||
| field of view | 1°30’ | ||
| resolviong power | 3” | ||
| min. focusing distance | 1m | ||
| AUTO VERTICAL COMPENSATOR | |||
| system | 2-axis liquid-electric | ||
| working range | ±3’ | ||
| accuracy | 1” | ||
| LEVEL | |||
| plate vial | 30”/2mm | ||
| circular vial | 8’/2mm | ||
| OPTICAL PLUMMET | |||
| image | erect | ||
| magnification | 3X | ||
| focusing range | 0.5m ~ ∞ | ||
| field of view | 5° | ||
| Laser plummet | optional | ||
| DISPLAY | |||
| type | 3.5 inches LCD, 640X480 touch screen
Windows CE6.0 operation system |
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| ON-BOARD BATTERY | |||
| type | rechargeable Lithium battery | ||
| voltage | DC 7.4V, 3100mAh | ||
| charging time | 2 hours | ||
| operating time | 10 hours | ||
| DATA STORAGE | |||
| Internal memory | 128MB DDR, 512MB NAND Flash | ||
| SD card | Max. 32G | ||
| Communication port | RS-232 port(6 pin), Mini USB, SD card, Bluetooth | ||
| DIMENSION & WEIGHT | |||
| dimension | 200 X 190 X 350mm | ||
| weight with battery | 6.0kg | ||
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