User ManualTable of Contents1. OVERVIEW32. DELIVERY SET5Standard delivery set5Optional accessories53. SPECIFICATIONS6Unit specifications6Main tube parameters7Spatial frequency-contrast characteristic8Field of view cleanness84. UNIT DESIGN95. OPERATION INSTRUCTIONS12Installing battery12Switching the unit on12Switching the unit off13Operating at night13Adjusting to individual vision13Focusing14Interpupillary distance14Installation of interchangeable lenses146. TROUBLESHOOTING16No green light through eyepieces16Image is unclear16Image flashes16Condensation accumulates on the parts16Visibility decreased or disappeared167. WARRANTY178. CUSTOMER SUPPORT189. ACCEPTANCE CERTIFICATE19Quality Inspector’s signature:19Size: 797 KBPages: 24Language: EnglishOpen manual