VIPER
®
HD
3000
12
13
LOS Mode
The Line of Sight (LOS) Mode is intended for rifle shooters
who are using slope correcting ballistic drop data cards,
ballistic cell phone applications, or other devices with
ballistic programs and who are shooting at distances
beyond 500 yards and with slopes greater than 15 degrees.
The range number displayed in LOS Mode is the actual
line of sight range with no ballistic correction for slope.
Most of the commonly used ballistic devices can provide
independent slope correction for bullet drop data and
require actual line of sight range input. Using the LOS
range when calculating bullet wind drifts under these
steep slope/long range conditions will provide a higher
degree of accuracy than using the HCD range.
To use, simply input the LOS range number into the
electronic device or use the LOS range when referencing
ballistic drop cards with slope correction.
When in LOS Mode, an
additional number is displayed
above the yardage number. This
number is slope incline shown
in degrees.
The slope incline number can be
entered into ballistic programs or
field cards to help calculate precise
bullet drops in mountainous terrain.
Range Unit Selection
Press the “Measure” button to toggle between the Yards
and Meters display. Press the “Menu” button to save your
desired choice and move to the Brightness selection screen.
Choose between Yards and Meters.
Incline Angle
LOS Range
Summary of Contents for Viper HD 3000
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