Operation Manual

Radius Bar
Battery Cap
MagView
Illumination
Knob
89
Turret Rotation
Vortex Viper PST riflescopes incorporate Vortex’s patented
Radius Bar to visually assist in
keeping track of turret rotations.
The radius bar provides a quick
visual reference that allows the
shooter to confirm:
• Knob orientation is correct
and has not shifted as a result of
accidental contact.
• Knob orientation is at the zero point when using the CRS
feature.
• By watching the position of the bar while making elevation
adjustments, the shooter is able to quickly track full, half and
quarter rotations.
To get these benefits from the Radius Bar, the “0” mark
on the turret must be indexed with the zero reference line
on turret post. See the section on Setting the CRS Stop and
Indexing Elevation Knob.
The Vortex Viper PST riflescopes use a variable intensity
reticle illumination
system to aid in low light
performance. To activate
the illumination, rotate
the adjustment knob in
either direction.
Illumination Adjustments
The illumination knob
allows for 10 levels of
brightness intensity; an
off click between each
level allows the shooter to turn the illumination off and
return to a favored intensity level with just one click. The
top five settings (6, 7, 8, 9 and 10) are visible in the daytime,
depending on the background color. Settings below 6 are for
low light use when the user’s eyes have adjusted to lower light
levels. Lowest settings are for use with night vision devices.
1. Unscrew the outer cap with a coin.
2. Remove the battery.
3. Replace with a new CR2032 battery.
Replacing the Illumination Battery