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
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.
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.
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.
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
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