MODEL | DT-NH921 | DT-NH931 |
IIT | Gen2+ | Gen3 |
Magnification | 1X | 1X |
Resolution | 45-57 | 51-57 |
Photocathode type | S25 | GaAs |
S/N(db) | 15-21 | 18-25 |
Luminous sensitivity(μa-lm) | 450-500 | 500-600 |
MTTF(hrs) | 10,000 | 10,000 |
FOV(deg) | 42+/-3 | 42+/-3 |
Detection distance(m) | 180-220 | 250-300 |
Adjustable range of eye distance | 65+/-5 | 65+/-5 |
Diopter(deg) | +5/-5 | +5/-5 |
Lens system | F1.2, 25mm | F1.2, 25mm |
Coating | Multilayer broadband coating | Multilayer broadband coating |
Range of focus | 0.25–∞ | 0.25–∞ |
Auto anti strong light | High Sensitivity, Ultra Fast, Broadband Detection | High Sensitivity, Ultra Fast, Broadband Detection |
rollover detection | Solid non-contact automatic detection | Solid non-contact automatic detection |
Dimensions (mm) (without eye mask) | 130x130x69 | 130x130x69 |
material | Aviation aluminum | Aviation aluminum |
Weight (g) | 393 | 393 |
Power supply (volt) | 2.6-4.2V | 2.6-4.2V |
Battery type (V) | AA(2) | AA(2) |
Wavelength of infrared auxiliary light source (nm) | 850 | 850 |
Wavelength of red-explode lamp source (nm) | 808 | 808 |
Video capture power supply (optional) | External power supply 5V 1W | External power supply 5V 1W |
Video resolution (optional) | Video 1Vp-p SVGA | Video 1Vp-p SVGA |
Battery life (hours) | 80(W/O IR) 40(W/IR) | 80(W/O IR) 40(W/IR) |
Operating Temperature (C | -40/+50 | -40/+50 |
Relative humidity | 5%-98% | 5%-98% |
Environment rating | IP65(IP67 Optional) | IP65(IP67 Optional) |