| Basic parameters |
PNV-57 M | |
| Magnification | min. 0,95x | |
| Left and right channel magnification differences | max. 8% | |
| Field of view | min. 48° | |
| Dioptric range of eyepieces | min. -2 D/+1,5D | |
| Objective focus range | 30 m ± 10 m | |
| Convergence of optical axes of the eyepiece must be: | ||
| horizontal vertical |
0° ± 1° 0° ± 1° |
|
| Resolution limit of the device must be: | ||
| at level of illumination 10-1lx and contrast 0,85 up to 0,95 at level of illumination 10-3lx and contrast 0,85 up to 0,95 |
max. 1,9 dc max. 2,9 dc |
|
| Power supply range | min. 1,2 up to 3,6 V | |
| The temperature range for operation | -30°C up to +50°C | |
| The temperature range for storage | -40°C up to +65°C | |
| Resistance to increased moisture 95% | 16 hours at 50°C | |
| Vibrations – amplitude 0,15mm, frequency 10 up to 55Hz | 10 minutes | |