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Operation - 14244_40
FLAG NOMENCLATURE - 14244_42

Signalman 3 & 2 - Aviation theories and other practices
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6. Loosen the clamp knobs and the lever clamp. 7. Store the goggles, batteries, and accessories in the cases, making sure they are properly positioned to close, and then latch the carrying case. 8. Store the carrying case in the storage case if the goggles are to be placed in prolonged storage. Latch the storage case. AN/PVS-11 Pocketscope The pocketscope (fig. 2-19) is a hand-held, submersible NVS equipped with either a 1X or 3X magnification lens used for short-range observation in either passive or active mode. The power source is two 1.5V AA batteries with a life of 40 hours. This NVS is provided with an IR source for close-up viewing. It can illuminate a man-size target at 15 meters in active mode. The unit also has an optional adapter for a 35mm camera or closed circuit television. OPERATION This NVS is similar in operation to other NVSs used by the Navy. The same precautions should be exercised with it as with the others. For passive operation, set the OFF-ON-PULL IR switch to on and observe that a green glow is visible in the eyepiece. Adjust the eyepiece and objective lens for proper focus. The pocketscope is ready for passive night vision operation. For IR illuminator mode (active), pull out the OFF-ON-PULL IR switch and rotate it to the PULL-IR position. Observe that the area in the immediate front of the pocketscope is illuminated. CAUTION The IR source is a light that is invisible to the unaided eye. However, the light from the illuminator can be detected by opposing forces using NVSs. Maintenance Routine maintenance for night vision goggles and the pocketscope is basically the same as for the Mk 37 and AN/PVS-8. Scheduled maintenance is to be performed as described on current MRCs to discover and correct any defects before they result in operational failure. If any part is defective or missing, other than the parts authorized for replacement or repair at the organization level, requisition Figure 2-19.—AN/PVS-11A pocketscope. replacement units. Review the technical manual before performing any maintenance on night vision devices. GENERAL SAFETY PRECAUTIONS Night vision devices are precision electro-optical instruments and must be handled carefully at all times. The image intensifier assembly phosphor screen contains toxic material. If an assembly becomes broken, be extremely careful to avoid inhalation of the phosphor screen material, and do NOT allow it to come in contact with the mouth or open skin wounds. If the phosphor screen material comes into contact with the skin, wash immediately with soap and water. If phosphor screen material is swallowed or inhaled, induce vomiting and seek medical help. The batteries used in NVSs require special handling to avoid possible physical harm or equipment damage. Return all used or damaged batteries to the property disposal officer. The following are the batteries used in NVS: 1. BA 1567/U battery. 2. Alkaline Battery BA 3058/U. 3. Lithium Battery BA 5567/U. This battery contains sulfur dioxide gas under pressure. Do not heat, puncture, disassemble, or otherwise tamper with the battery. Turn off the equipment if the battery compartment becomes too hot; wait until batteries have cooled before removing them. Batteries have a safety vent to prevent explosion. When they are venting gas, you will smell gas, your eyes may become irritated, or 2-19







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