(2) Mate and lock the female connector
end of the interconnecting cable to the viewer
above).
(3) Mate and lock the male connector end
of the interconnecting cable to the battery.
(4) Attach the battery to your belt or
place on a nearby support if the viewer is be-
ing operated on a tripod
above).
CAUTION
Before turning POWER switch to ON,
assure that BRIGHTNESS control is
fully counterclockwise.
(5) Set the POWER switch ON. The
faint ticking of the oscillating mirror should
be heard immediately. Allow about 30 seconds
after turn-on for the CRT heater to warm up.
(6) Remove the protective cap from the
infrared (IR) window (fig. 1-3).
(7) Select a known warm target, such as
a person, from 10 to 20 feet distance. Slide
each hand under the hand slings on each end
of the viewer. Adjust hand slings for a com-
fortable fit. Hold the viewer in the palms of
hands so that the right thumb can move the tip
of the FOCUS lever and the forefinger can
rotate the BRIGHTNESS control. Similarly the
left forefinger can rotate the CONTRAST con-
trol (fig. 2-3).
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