Operation Manual

HD R/T
BINOCULAR
5 4
Objective Lens
Ocular Lens
Adjustable Winged
Eyecup
Strap
Attachment
Tripod Adapter Socket
Center Focus
Diopter
Focus
Reticle
Focus
IPD
The eyecups on a Viper® HD R/T binocular feature winged design
that blocks out stray light and rotates for a custom fit. The eyecups
fold up and down so any viewer can see the full field and enjoy
comfortable viewing—with or without eyeglasses.
When not using eyeglasses or
sunglasses, keep the eyecups fully
extended. For the best viewing
when viewing through eyeglasses,
fold the eyecups down.
Adjust the interpupillary distance
The interpupillary distance (IPD) is the distance between the centers
of the left and right eye pupils. Match the IPD of your eyes to that of
the binocular so that you see a single image that is free of shading.
Basic operaTion
Adjust the eyecups
Rotate the binocular barrels
inward or outward to line your
eyes up with ocular lenses.
Distance between the centers
of the ocular lenses.