| MODEL | DT-NH83XD | DT-NH83XD |
| IIT | Gen2+ | Gen 3 |
| Magnification | 3X | 3X |
| Resolution | 45-57 | 51-63 |
| Photocathode type | S25 | GaAs |
| S/N(db) | 15-21 | 18-25 |
| Luminous sensitivity(μa-lm) | 450-500 | 500-700 |
| MTTF（hrs） | 10,000 | 10,000 |
| FOV(deg) | 42+/-3 | 42+/-3 |
| Detection distance(m) | 280-350 | 350-400 |
| Diopter (deg) | +5/-5 | +5/-5 |
| Lens system | F1.3, Ф42 FL=50 | F1.3, Ф42 FL=50 |
| Coating | Multilayer broadband coating | Multilayer broadband coating |
| Range of focus | 3M--∞ | 3M--∞ |
| Auto anti strong light | High sensitivity broadband detection | High sensitivity broadband detection |
| rollover detection | Solid non-contact automatic detection | Solid non-contact automatic detection |
| Dimensions | 165x189x54 | 165x189x54 |
| Material | Aviation aluminum | Aviation aluminum |
| Weight（no battery） | 686 | 686 |
| Power supply | 2.6-4.2V | 2.6-4.2V |
| Battery type | AA(2) | AA(2) |
| Battery life（H） | 80(W/O IR) 40(W/IR) | 80(W/O IR) 40(W/IR) |
| Operating Temperature（℃） | -40/+50 | -40/+50 |
| Relative humility | 5%-98% | 5%-98% |
| Environment rating | IP65（IP67 optional） | IP65（IP67 optional） |
As shown in Fig. 2, Turn the work switch along the clockwise direction. The knob indicates the location of "ON", when the system starts to work.
As shown in Fig. 3, connect the bracket as the axis, and hold both sides of the night vision instrument with both hands Rotate clockwise or anticlockwise. Different users can use it according to their own Adjust the distance between eyes and comfort until it is suitable for the distance between eyes.
Choose a target with moderate brightness. The eyepiece is adjusted Without opening the lens cover. As in Figure 3, Turn the eyepiece hand wheel clockwise or counterclockwise. To match the eyepiece, when the most clear target image can be observed through an eyepiece.The working switch of this product has four gears. There are four modes in total, except OFF. There are three modes of work: ON, IR and AT. Corresponding to normal working mode, infrared auxiliary mode and automatic mode, etc. As shown in Fig. 2.The environmental illumination is very low (all black environment). When the night vision instrument cannot observe clear images, The working switch can be turned clockwise to one shift. As shown in Fig. 2, The system enters the "IR" mode. At this time, the product is equipped with infrared auxiliary lighting to turn on. Ensure normal use in all black environments. Note: in IR mode, similar equipment is easy to be exposed.The automatic mode is different from the "IR" mode, and the automatic mode starts the environment detection sensor. It can detect environmental illuminance in real time and work with reference to illumination control system. Under extremely low or extremely dark environment, The system will automatically turn on infrared auxiliary lighting, and when the environmental illumination can meet normal observation, The system automatically closes "IR", and when the ambient illumination reaches 40-100Lux, The whole system is automatically shut down to protect the photosensitive core components from damage by strong light.
To ensure the comfort of users when using this system, the helmet mounted system has designed a perfect fine-tuning structure to meet the needs of different users.1.Up and down： Unlocking the height locking knob of helmet mount counterclockwise. Slide the knob up and down, adjust the eyepiece to the most suitable height to observe. Clockwise rotates the height locking knob of the helmet mount to lock the height. The red diagram is shown in Fig. 2.left and right: press the left and right adjusting button of the Helmet Pendant with your finger to slide the night vision instrument assembly horizontally. When it is adjusted to the most suitable position, loosen the left and right adjusting button of the helmet pendant. The night vision assembly will lock this position and complete the left and right horizontal adjustment. As shown in Fig. 3.Front and aft: when the distance between the eyepiece and the human eye needs to be adjusted, First turn the equipment locking knob on the Helmet Pendant counterclockwise. Then slide the night vision module back and forth and adjust it to the right position. Clockwise rotation of equipment locking knob, locking device, before and after adjustment. As shown in Fig. blue.
First, turn the knob on the helmet mount device to the end of the clock counter clockwise. Then use the universal fixture of the night vision instrument to one end of the eyepiece to the equipment slot of the helmet hanging device. Press the device button on the helmet mount vigorously. At the same time, the night vision instrument is pushed along the equipment slot. Until the button of center is moved to the middle at the universal fixture. At this time, release the anti button, turn the equipment locking knob clockwise and lock the equipment. As shown in Fig. 5.After installing the night vision instrument, Fasten the pendant of helmet mount to the general equipment slot of the soft helmet. Then press the lock button of the Helmet Pendant. At the same time, the components of the night vision instrument and Helmet Pendant are rotated counterclockwise. When the helmet mount connector is completely attached to the universal equipment slot of the soft helmet, Loosen the lock button of the Helmet Pendant and lock the product components on the soft helmet. As shown in Fig. 6.
The objective adjustment is need to see the target at different distances. Before adjusting the lens, must adjust the eyepiece according to the above method. When adjusting the objective lens, choose a dark environment target. As shown in Figure 4,Open the lens cover and aim at the target. Turn the focusing hand wheel clockwise or counterclockwise.Until you see the clearest image of the target, complete the adjustment of the objective lens. When observing targets at different distances, the objective needs to be adjusted again according to the above method.