| |
DTM-552 |
DTM-532 |
DTM-522 |
| Telescope |
| Tube length |
158 mm / 6.22 in. |
| Image |
Erect |
| Effective diameter of objective |
45mm / 1.77 in. (EDM: 50 mm / 1.97 in.) |
| Magnification |
33 x (21 x / 41 x with optional eyepieces) |
| Field of view |
1°20' (2.3 m at 100 m / 2.3 ft. at 100 ft.) |
| Resolving power |
2.5" |
| Minimum focusing distance |
1.3 m / 4.26 ft. |
| Reticle illumination |
Provided (3 steps) |
| Distance measurement |
| Under good conditions |
(no haze with visibility over 40 km / 25 miles) |
| With reflector sheet |
5 to 100 m / 16.4 to 328.1 ft. |
| With mini prism |
1,100m / 3,600 ft. |
| With single prism |
2,700 m / 8,900 ft. |
| With triple prism |
3,600 m / 11,800 ft. |
| With nine prisms |
4,400 m / 14,400 ft. |
| Under normal conditions |
(ordinary haze with visibility about 20 km / 12.5 miles) |
| With reflector sheet |
5 to 100 m / 16.4 to 328.1 ft. |
| With mini prism |
950 m / 3,100 ft. |
| With single prism |
2,400 m / 7,900 ft. |
| With triple prism |
3,100 m / 10,200 ft. |
| With nine prisms |
3,700 m / 12,100 ft. |
| Readout display |
9999.9999 m / 29999.999 ft. |
| Accuracy |
| Precise mode |
±(2 + 2ppm x D)mm |
| Normal mode |
±(4 + 2ppm x D)mm |
| Least count |
| Precise mode |
0.1 mm / 1 mm, 0.0005 ft. / 0.002 ft. selectable |
| Normal mode |
1 mm / 10 mm, 0.002 ft. / 0.02 ft. selectable |
| Measuring intervals |
| Precise mode |
1.0 sec. (initial 1.0 sec.) |
| Normal mode |
0.5 sec. (initial 1.0 sec.) |
| Ambient temperature range |
-20°C to 50°C/-4°F to 122°F |
| Atmospheric correction |
| Temperature range |
-40°C to 60°C / -40°F to 140°F |
| Barometric pressure |
400 to 999 mhg / 533 to 1332 hpa / 15.8 to 39.3 in.hg |
| Prism offset correction |
-999 to 999 |
| Angle measurement |
| Reading system |
Photoelectric detection by incremental encoder (diametrical detection for H / V circles) |
| Circular diameter |
79 mm |
| Minimum increment |
| (Degree) |
0.5" / 1" / 5" |
1" / 5" 10" |
| (Gon) |
0.1 mgon /
0.2 mgon /
1 mgon |
0.2 mgon /
1 mgon /
2mgon* |
| (MIL6400) |
0.002 mil /
0.005 mil /
0.02 mil |
0.005 mil /
0.02 mil /
0.05 mil |
| Accuracy (horizontal and vertical) |
1" / 0.3 mgon |
2" / 0.5 mgon |
3" / 1 mgon |
| (Standard deviation on DIN18723) |
| Dual-axis compensator |
| Method |
Liquid-electric detection |
| Compensation range |
±3' |
| Setting accuracy |
±1" |
| Lumi-Guide |
| Working range |
100 m / 330 ft. |
| Positioning accuracy |
Within approx. 6 cm / 2.4 in. at 100 m / 330 ft. |
| Level vials |
| Sensitivity of plate level vial |
20" / 2 mm |
30" / 2 mm |
| Sensitivity of circular level vial |
10' / 2 mm |
| Optical plummet |
| Image |
Erect |
| Magnification |
3 x |
| Field of view |
5° |
| Focusing range |
0.5 m / 1.6 ft. to  |
| Display |
| Type |
Graphic LCD (128 x 64 dot) on both sides |
| Point memory |
| Raw/coordinates |
10,000 records |
| Dimensions (W x D x H) (approx.) |
166 x 156 x 365 mm / 6.5 x 6.1 x 14.4 in. |
| Weight (approx.) |
| Main unit (without battery) |
4.9 kg / 10.8 lbs. |
| BC-80 clip-on battery |
0.6 kg / 1.3 lbs. |
| Plastic carrying case |
3.1 kg / 6.8 lbs. |
| Clip-on Ni-MH battery BC-80 |
| Output voltage |
7.2V DC |
| Operating time |
Approx. 10.5 hours
(continuous distance/angle measurement)
Approx. 24 hours
(distance/angle measurement every 30 seconds)
Approx. 30 hours (angle measurement) |
| Quick charger Q-75U / E (Q-75U for 115V, Q-75E for 220 / 240V) |
| Recharging time |
Approx. 2.0 hours for full recharge |
| Discharging time |
Approx. 7.5 hours |
| Quick charger Q-70C (12 V DC, cigarette lighter charger) |
| Recharging time |
Approx. 2.0 hours
(fully discharged BC-80 requires more than one charge) |
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