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Vortex Impact 850 instruction manual

Product: https://www.optics-trade.eu/en/vortex-impact-850.html

This text is a transcription of the file in PDF format.

Impact®
850 Specifications
Range Reflective: 10–850 yards (10–777 meters)
Range Deer: ~400 yards (356 meters)
Accuracy: + /- 1 yards @ 100 yards
Maximum Angle Reading: +/- 60 degrees
Measuring Time: < 1 second
Battery Life: 5000 single range minimum
Magnification: 6x
Objective Lens: 20 mm
Eye Relief: 15 mm
Diopter: +/- 3 diopters

The Impact®
850 Laser Rangefinder

Vortex Impact 850

The Impact® 850 is an extremely effective anglecompensated laser rangefinder for archers and
rifle shooters. Using the primary HCD (Horizontal
Component Distance) mode, it provides key angle
compensated range information required by the vast
majority of shooters in a simple, quick to read display.
The Impact also provides LOS (Line of Sight) mode
and Scan feature along with
adjustments for reading in
yards or meters.

Please be sure to read entire manual prior to using the Impact
850. For the most current information about this and all our
products, please visit our webpage at vortexoptics.com

Vortex Impact 850

Basic Operation

Install Battery

Vortex Impact 850

Open the battery
compartment and
install the CR2
battery included
with the Impact
850.

Power Up

Vortex Impact 850

Once you install the battery, the Impact 850 is in
Ready Condition—the normal power-off condition
when not ranging. To power up the Impact 850 from
Ready Condition and prepare for ranging,
press and release the Measure button. The
HCD or LOS ranging screen will display. The
Impact 850 will power down automatically
after ten seconds of non-use.
Focus
Turn the eyecup in or out until image is
sharp

Mode Selection

Vortex Impact 850

Your Impact is factory set to the angle
compensating HCD mode and yards.
To change modes, after the Impact is
powered up activate the Mode Selection
by pressing and holding the Menu button
for at least four seconds. Once the Mode
Selection screen displays, release the button.
As you progress through Mode Selection, you may exit at any
time and save your settings by pressing and holding the Menu
button for at least four seconds—the Impact will then return
to power-up condition.

Vortex Impact 850

Set and Save Mode Selections

1. Choose between the HCD and LOS Modes.
After activating the Mode Selection, press the Measure
button to toggle between the HCD and LOS displays. Press
the Menu button to save your desired choice and move to
the Yards/Meters selection screen.

Vortex Impact 850

2. Choose between Yards and Meters Display.
Press the Measure button to toggle between the Yards and
Meters display. Press the Menu button to save your desired
choice.

Vortex Impact 850

To exit Mode Selection and save settings, press and hold the
Menu button for four seconds. Settings will also save when
Impact powers down automatically.

Ranging

With the Impact 850 powered up, position the crosshair on
the target object and press and release the Measure button
to get the distance measurement. If the laser is not able
to range due to the reflectivity of the target, you will see a
display similar to that shown here. To range a new target,
simply re-aim and press the Measure button again.

Scan Ranging

Vortex Impact 850

With the Impact powered up, activate
Scan Ranging by pressing and holding
the Measure button down. A blinking “S”
will appear in the lower left corner.
Keeping the button depressed will
continuously measure distance as you
pan the crosshair back and forth across
target objects. Releasing the Measure
button will return laser to the Power Up
Condition.

Ranging Mode Explanations

The Impact 850 provides two range modes: HCD (Horizontal
Component Distance) and LOS (Line of Sight). Both modes
offer a Scan feature.

HCD Mode

The Impact 850’s HCD range display is intended to be the
primary mode—used for most rifle and archery shooting
conditions. The yardage number displayed is the critical
horizontal component distance.

Vortex Impact 850

Using the HCD Mode

Use the HCD range mode in the following situations:
•Rifle shooting on level ground at any range.
•Rifle shooting out to ranges of 800 yards with mild slopes
(less than 15 degrees).
•Rifle shooting out to ranges of 400 yards with moderate
slopes (15 to 30 degrees).
•For all archery shooting.

Note: See page 13 for method of reading slope degree in LOS
mode.

Vortex Impact 850

The displayed HCD yardage
number is corrected for shot
angle and needs no extra user
input; shooters simply use the
appropriate level ground bullet
drop and wind adjustment for
the range displayed and shoot. Archers use the appropriate level
ground sight pin for the range displayed and shoot.

LOS Mode

The Impact 850’s LOS (Line of Sight) mode is intended for
rifle shooters who are using slope correcting ballistic drop
data cards, ballistic cell phone applications, or other ballistic
programs and who are shooting at distances beyond 500
yards and with slopes greater than 15 degrees. Most shooters
and archers will not need the LOS mode.
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.

LOS Mode – Using the INC Number

When in LOS mode, an additional number is displayed below
the yardage number. This number is slope shown in degrees.

Vortex Impact 850

The slope incline number can be used with drop charts or
field cards to calculate precise bullet drops in mountainous
terrain.

Scan Feature

The Scan feature can be used to range moving targets or
help range smaller targets on uniform backgrounds in either
HCD or LOS modes. Once powered up, press and hold the
Measure button and scan the laser back and forth, watching
for changes in the yardage number as the crosshairs move
across the target object. A blinking “S” display indicates
Scan Ranging is activated.

Vortex Impact 850

Lanyard

The lanyard provides a secure way to carry your rangefinder.

Vortex Impact 850

Maintenance

•Use lens brush to remove dust or grit from lenses.
•Use a clean lens cloth or tissue to remove smudges or
smears from lenses.
•Store rangefinder in a dry location away from direct
sunlight.

Rangefinding Tips

Laser rangefinders work by emitting a brief pulse of light
aimed at a target object. Distance is determined by the
amount of time taken for the light to emit and return to the
laser’s internal receiver. A laser’s ability to read range can
be affected by many things—mostly relating to the target
objects. Under ideal conditions, the Impact can be expected
to range a large reflective object out to 850 yards and deersized game out to 400 yards.
Laser Performance Tips
•Light colors will usually reflect the laser pulse better than
dark ones. An exception would be snow, which can be
difficult to range.
•Shiny, reflective surfaces will usually reflect the laser
pulse better than dull, textured surfaces. Animal hair will
not reflect as well as a hard surface.
• Ranging while under cloud cover can improve laser
performance compared to ranging while under bright
sunny conditions.
•Solid objects, such as rock piles, will reflect the laser
pulse better than less dense items such as bushes.
•Flat surfaces perpendicular to the laser pulse will reflect
better than curved surfaces or surfaces angled in relation
to laser pulse.
•Ranging over water can sometimes cause false reflections
and readings.
•At longer distances, large objects will be easier to range
than small objects.
• If you are having difficulty ranging an animal or object,
try ranging a different nearby object, or use the Scan
feature to pan back and forth while watching for changes
in range number.

Safety and Precautions

Do not stare into beam or view directly without laser eye
protection. Staring continuously into beam for prolonged
periods of time could cause harm to your eyes. If used
properly, this device is safe for your eyes and laser eye
protection is not needed.
• Use the correct battery (CR2) and proper battery
orientation.
• Do not look at sun.
• Do not activate Menu or Measure buttons while aiming at
eye or looking into objective lens.
• Do not disassemble.
• Do not allow children to play with unit.

Vortex Impact 850

VIP Warranty

We build optics based on our commitment to your absolute
satisfaction. That’s why our products are unconditionally
guaranteed and we make this Very Important Promise to
you—a Very Important Person.
Rest assured, that in the event your optic becomes damaged
or defective, we will repair or replace it at no charge to
you. If we cannot repair your optic, we will replace it with
an optic in perfect working order and in equal or better
physical condition. Call us at 800-426-0048 for prompt,
professional, and friendly service.

2120 West Greenview Drive
Middleton, WI 53562
[email protected]

Visit www.vortexoptics.com for more information.
The VIP Warranty does not cover loss, theft, deliberate damage
or cosmetic damage that does not hinder the performance of
the product.

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