Caldwell Chronograph G2 User manual

Product #720002 Instructions #1061293 Revision: D
Care & Usage Instructions

AB
C
F
G
CONTENTS
CHRONOGRAPH CONTENTS:
A - Chronograph
B - 2 Ground-Screen Assembly
C - Ground-Screen Connector
D - Charging Cable
E - USB Wall Adapter
F - Tripod
G - Carrying Case
H - European Plug Adapter
E
D
H

SAFETY AND WARNINGS
Target must have a safe backstop. Always follow all applicable safety rules
while using the chronograph, including but not limited to:
1. Firearm and shooting safety rules
2.Airgun, paintball gun safety rules
3.Ammunition reloading safety rules
4.Archery safety rules
If you are not familiar with applicable rules for your application consult the manufacturer(s)
of the rearm, airgun, paintball gun, bow or reloading equipment/component…
Velocity measurements should not be used to calculate combustion pressures
in your cartridge or chamber. Again, do not exceed published maximum powder levels in
your ammunition.
Do not try to protect your chronograph with armor plating. Bullet ricochet
from hitting this plating could cause property damage, personal injury or death. Intentional
or unintentional shooting of the chronograph will void factory warranty.
All chronograph units have inherent uncertainty when recording velocity measurements.
Several uncontrollable variables can affect each measurement and contribute to this
uncertainty, including sunlight intensity, sunlight orientation, cloud cover, wind, shadows, and
ground reectivity of cement, water, or snow, etc. When collecting data, be suspicious of any
data points that have greater than 4% difference from that ammo’s average string velocity.
Special care should be taken when shooting certain types of ammunition. Gas checks, wads,
sabots, etc. Can separate and impact your chronograph causing damage to the device.
As with any electronic device, water can damage certain components.To prevent damage,
do not use chronograph outside when it is raining without being protected.
READ THOROUGHLY ALL DIRECTIONS AND SAFETY INSTRUCTIONS INCLUDED IN
THE PACKAGE. FAILURETO COMPLY MAY RESULT IN AN UNSAFE FIREARM CONDITION
THAT MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

SPECIFICATIONS
• Velocity range 1 to 9000 FPS (2743 MPS)
• Operating temperature: 20 – 140 degrees F (-6o- +60oC)
• Bluetooth®4.0 (Requires use of the Caldwell®App)
ASSEMBLY
OPERATING CONDITIONS
This chronograph is a highly sensitive measurement instrument and has a built-in lithium-ion rechargeable battery. To prevent damage to the
internal components, the following conditions must be met.
Moisture: Keep the Chronograph dry at all times. Do not use this device in the rain.
Temperature: Operating Range: 0-140°F (60°C). Do not leave your chronograph in a hot car.
NOTE: When using the chronograph in temperatures below 50°F (10°C)., the battery life will be reduced.
1. Connect one of the Ground Screen assemblies to the Ground Screen Connector by
sliding the tubes into the notches. (PHOTO 1)
NOTE: Make sure the tubes are fully inserted so the tubes are fully seated against
the back wall & the screen (PHOTO 1)
2. Connect the second Ground Screen assembly on the other side
3. Place the Ground Screen Assembly onto the tripod and turn the thread wheel until
it is rmly tightened.
4. Slide each of the four support bars to the connectors on the sides of the chronograph
(PHOTO 2)
5. Connect the two wires to the plugs in the side of the housing.
(This is only necessary if the light kit is being used)
(PHOTO 1)
(PHOTO 3)
(PHOTO 2)
Thread tripod here
DISASSEMBLY FOR STORAGE
The chronograph comes with a zippered case for transportation and storage. As this is a highly sensitive measurement instrument, care should
be taken at all times to keep the Chronograph free from dirt, dust and moisture.
To disassemble the chronograph for transportation or storage, follow these steps:
1. Unplug the two wires from the side of the housing for the LED lights
2. Lift the chronograph off of the four support rods and place it in the center pocket of the carry case.
3. Fold the support rods down onto the Ground Screens as shown
4. Remove the Ground Screens from the Ground Screen Connector and place all three pieces in one
of the pockets of the case.
5. Fold up the tripod and place it in the third pocket of the case.

CHARGING THE BATTERY
The Chronograph has a built-in Lithium-Ion rechargeable battery. Battery life can depend on many factors so run times are approximate. This
battery will power the chronograph for approximately 12 hours under normal conditions, and for 2.0 hours when the lights are used.
To charge the battery, follow these steps:
1. Plug in the included USB wall adapter.
2. Connect the chronograph by plugging the provided USB-Micro USB cord into the
Chronograph housing
3. Connect the provided cord into the wall adapter.
NOTE: A GREEN LED light near the charging port will ash when the battery is charging, and
will stay on steadily once it is fully charged.
The battery will take approximately 2.5 hours to fully charge.
NOTE: Make sure to use the correct prongs on your wall mount. Below are instructions on how to switch out your prongs.
OPERATION
1. Place Chronograph on the tripod or a stable surface at the
appropriate height for ring projectile through the shooting
window. Be sure the LCD screen is facing towards the shooter.
2. Position the unit 10 to 15 feet (3-5m) in front of the muzzle
of a rearm or if using with a bow, at least one full arrow length
in front
3.Align the Chronograph:
a. Height, so that the projectile travels through
the center of the shooting window
b.Tilt Angle, so projectile travels parallel to the
top surface of the housing
c. Left/Right, so that projectile is in line with housing
4. Turn the unit on by pressing the button on top of the unit
5. Select the units by pressing the “Unit” button.
The selected unit will ash on the LCD screen
6. If lights are needed, press the to turn them on.
NOTE: The lights use batter power quickly. Only use
them when shooting indoors or in low light conditions
such as sunrise and sunset.
NOTE: For continuous use, the Chronograph can be powered
directly by the USB cord. This allows the lights to be used for
extended times.
UNIT
Power
Lights
On the underside of the wall charger
plug is a button. Push it to release the
Prong plate from the charger.
Slide the prong plate up out
of the wall mount.
Then slide the other prong
plate down into the wall
mount until it “CLICKS”
into place.
CAUTION:
Make sure the prong plate is fully seated into the wall
mount BEFORE plugging it into the outlet.

READING THE DISPLAY
Initial “ready” screen after startup sequence
-[ ]-
3014 Projectile velocity reading – ready for next shot
Duplicate reading alert (alternate ashing
with shot velocity – ready for next shot
Error Alert .
Err2: Projectile not recorded by rear sensor
Err3: Projectile not recorded by front sensor
– ready for next shot
(Check alignment to be sure you are shooting directly under both sensors)
Low battery alert – charge battery
SMART PHONE CONNECTION
1. Go to the appropriate application marketplace for your smartphone/mobile device and search for “Caldwell®Ballistic Precision Chronograph”.
2. Alternatively, http://www.btibrands.com/ provides direct links to the appropriate APPs.
for the different mobile platforms supported by Caldwell®.
3. Once the app is installed you will see the Caldwell®Ballistic Precision APP icon in your smartphone home screen.
iOS Pairing:
1.Turn the Chronograph On
2. Open the Caldwell®APP
3. Go to APP Setting and select “Bluetooth Enabled”
4.The chronograph will pair and a green Bluetooth®icon will be shown in the upper right corner of the device screen
The Chronograph will now automatically pair whenever power is on and the APP is opened.
Android Pairing:
1.Turn the Chronograph on
2. On your mobile device, go to device settings > Bluetooth®
3. Update/Scan and select “Caldwell®Chrono” once it appears
4. Open the Caldwell®APP
5. Go to APP Settings and select “Bluetooth Enabled”
6. The chronograph will pair and a green Bluetooth®icon will be shown in the upper right corner of your device screen
The Chronograph will now automatically pair whenever power is on and the APP is opened.
APP FUNCTIONS
• Instant read out
• Note Log
• Temp, BP,Avg, SD, Min, Max, Spread, Shot/sec
• Save, email and text Shot Groups
• Imperial/Metric Units
• For more functions and information go to www.btibrands.com

TIPS
Aim 1"-3" below the bottom
of the Chronograph
Point of Aim
(Sight Picture in Scope)
Actual Bullet Path
INTENTIONAL OR UNINTENTIONAL
SHOOTING OF THE CHRONOGRAPH
WILL VOID FACTORY WARRANTY.
1. Understand the ight of your bullet will be lower than your sight picture. Most scopes are mounted 1.5” higher
than the centerline of the barrel. Always aim higher than the middle of the shooting area.
2. Clean Lenses. Remove build-up of dust on the sensors. Use a Q-tip or canned air to clean the lenses,
being especially careful not to scratch them.
3. Ensure chronograph is level. This will make sure that the projectile height as it passes over each sensor opening is the same.
4. Use a stable platform for the chronograph. A table will also work and so will a dedicated metal stand.
A tripod works well to position and align the chronograph.
5. Avoid shooting over reective surfaceslike snow or some types of sand. In some instances you may be able to
reduce reection by placing a large dark colored tarp under the chronograph set up.
6. In orescent lighting. Use the built in lights.
7. BOWS and CROSSBOWS: Stand at least one full arrow length away when you shoot.
Shoot arrows over the projectile sensors evenly so the arrow passes at the
same height over both sensors. Blunt arrow tips work best.
8. Use a laser bore sigher to help align and set up the Chronograph
Visit www.btibrands.com for more tips
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiver antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experience radio/TV technician for help.
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device
may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the
device.
Le présent appareil est conforme auc CNR d'Inudstrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée
aux deux conditions suivantes: (1) l'appareil ne doit pas prduire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

AC ADAPTER
Use only the supplied AC adapter (I.T.E Switching Power Supply)
Input: 100-240 V, 50/60 Hz, 0.2 A
Output: 5.0V, 1.0 A
BATTERIES
This product uses lithium Ion batteries. Misuse of batteries could cause a leak, rupture or other trouble.
When throwing used batteries away, follow the disposal instructions indicated on the batteries and the local disposal laws.
Do not heat or disassemble batteries. Do not put them in re or water. Batteries could rupture or leak, causing re, injury or stains around them.
ENVIRONMENTALLY SAFE BATTERY DISPOSAL
The batteries used in the Chronograph’s battery pack contain the following toxic and
corrosive material: LITHIUM-ION.
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