Vetta C350 User manual

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CYCLE COMPUTER OWNER'S MANUAL
ENGLISH

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INTRODUCTION
Congratulations on your purchase of the new Vetta C-350 cycle computer. The C-350 is designed for the
cycling enthusiast with the features that support a serious training program, whether you are a road cyclist,
offroad cyclist, or triathlete. The Vetta two button design allows for easy programming and
operation. This C-350 model model offers seven functions, including elapsed time, average and maximum
speed, and trip distance. The wireless feature of the C-350 keeps the lines of your bike clean and free of
wires and helps to make installation a snap.
COMPONENT ILLUSTRATIONS
Head Unit Wireless Sensor
and Bracket
Bracket Battery MagnetTransmitter
Battery

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FUNCTION LIST
SPEEDOMETER (S) (Mile/h or km/h)
Tells you your current speed on the upper line of the display screen at all times.
CUMULATIVE ODOMETER (O)
Tells you your cumulative distance until you perform an all clear total reset, the
battery is changed, or the unit passes 9999.9 mi. or km.
TRIP ODOMETER (D)
Tells you the distance for your current ride from 0 to 999.99 mi. or km. Automati-
cally resets after 999.99 mi. or km. Trip odometer will commence automatically
when the bicycle wheel rotates. To reset the trip odometer to zero at the end of your
ride, press the “SET” and “MODE” buttons simultaneously.
ELAPSED TIME (T)
Elapsed time begins when the wheel begins to rotate. It starts automatically

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when the wheel is set into motion and stops when the wheel stops for over
four seconds. When one hour of riding time has elapsed, the clock display will
automatically display the time as hours and minutes. When ten hours of rid-
ing time have elapsed, the clock will return to 0:00:00. Average speed will
show an “E” for error. Distance (D) and maximum speed (M) will continue to
accumulate. To clear the elapsed time press the “SET” and “MODE” buttons
while in the elapsed time mode.
MAXIMUM SPEED (M)
Maximum speed is your highest attained speed on your current ride. It is stored
and displayed until an all clear reset is performed or the battery changed.
AVERAGE SPEED (A)
Your average speed is calculated using your true ride time and trip distance. The
minimum unit displayed is 0.1 km/h or mile/h.

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DIGITAL 12/24 HOUR CLOCK
Gives you the time of day in a 12 or 24 hour format. To display the clock, press the
“MODE” button for one second. To change between the 12 and 24 hour clock, press the
“MODE” button for three seconds while in the clock mode. Press the “MODE” button
again to return to odometer mode.

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RESETTABLE ODOMETER
The cumulative odometer on the C-350 can be preprogrammed to any desired mileage. This feature allows
you to retain your cumulative mileage when replacing batteries or allows you to lie about your mileage to
impress your friends.
AUTO POWER SAVING MODE (AUTO START-STOP)
As a battery saving device, Vetta computers will automatically shut down after 10 minutes of non-use. Your
C-350 will automatically restart itself as soon as the unit receives input from the wheel.
AUTO SCAN
Once it is activated, this feature scans all display modes at 3 second intervals. To activate this feature, press
the “SET” button while in the trip distance mode. To deactivate the Auto Scan mode press either the “SET”
or “MODE” button.
ALL CLEAR TOTAL RESET
To completely clear the unit of all information, press the “SET” and “MODE” buttons for 10 seconds. The
unit will return to the programming mode with the flashing km/h symbol displayed. The unit is now ready
to reprogram. Do not clear the computer unless you need to reprogram the unit.
FEATURE LIST

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The C-350 computers use a common LR44 1.5v button cell battery. Replacement
batteries are available at most camera shops and from your Vetta retailer. Under
normal usage a battery should last approximately one year.
NOTE: Most prob-
lems that occur with cycle computers are caused by dead or weak batteries. If
you are having problems with your computer's operation, check and replace the
battery first.
STEP 1
Remove the battery cover from the bottom of the computer by turning the
battery cap counterclockwise with a coin.
STEP 2
Install the battery into the battery compartment with the positive (+) side of the
battery facing the compartment door. Be careful when you are installing the
battery not to bend any of the battery contacts.
STEP 3
Screw the battery cap firmly into place. Make sure that the rubber o-ring seal
does not get pinched or distorted in this operation as this may compromise the
waterproofing of the unit.
BATTERY INSTALLATION
LR44 1.5v Battery

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CR2032 3v Battery
INSTALLATION OF TRANSMITTER BATTERY
The transmitter comes from the factory with the CR2032 3v battery installed.
STEP 1
To replace the battery, first remove the battery cap on the top of the transmitter
with a coin. Remove the old battery and dispose of properly.
NOTE: Check the
inside of the transmitter for corrosion. If corrosion is visible, replace the
transmitter with a new unit.
STEP 2
Install a new battery in the transmitter battery compartment with the positive (+)
side facing the opening and reinstall the battery cap.
Make sure that the battery cap is tight to prevent moisture from
entering the transmitter unit. An improperly installed battery can damage the
transmitter.
CAUTION

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WARNINGS AND CAUTIONS
Vetta encourages you to ride safely. Wear a helmet every time you ride, use front and rear
lights at night, and always keep your eyes on the road ahead of you.
Vetta cycle computers are sophisticated electronic instruments. Vetta recommends that this
product be installed only by a qualified bicycle retailer. Failure to read these instructions and improper
installation of this device may void the warranty. If you are in doubt about any aspect of the installation
or operation of this product, consult your local bicycle retailer for clarification.
CAUTION
CAUTION
“SET” BUTTON (LEFT)
The “SET” button confirms, resets, or clears numbers.
“MODE” BUTTON (RIGHT)
The “MODE” button starts, stops, or moves in a loop sequence from one function
to another.
BUTTON FUNCTIONS

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SETTING MILES/HOUR OR KILOMETERS/HOUR
After the battery is installed, all of the displays will be illuminated. km/h will then
appear on the screen.
STEP 1
Press the “MODE” button to switch between miles and kilometers.
STEP 2
When your selection has been made, press the “SET” button to confirm your
selection and move to the wheel circumference selection mode.
PROGRAMMING THE COMPUTER HEAD
Now that you are familiar with the features of your Vetta C-350 cycle computer, you are ready to begin pro-
gramming the unit specifically for your bike. Take a few minutes to familiarize yourself with the buttons and
their functions before you proceed to program the unit.

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DETERMINING YOUR CORRECT WHEEL SIZE
Vetta cycle computers are programmed using the circumference of the wheel measured in millimeters. Note
that while your computer can be programmed to +/- 1mm for total accuracy, discrepancies of as much as
50mm or more will not have a significant effect on the accuracy of the unit for most normal rides.
The following chart lists the programming sizes for many of the most popular wheel sizes currently in use.
These numbers are estimations and may vary slightly from the size of your actual wheel depending on the
manufacturer of the tire that you are using.

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WHEEL SIZE CALCULATION
If the wheel size of your bike is not listed in the chart, follow these simple steps to calculate the wheel
circumference number for your bike.
STEP 1
Measure the distance from the center of the front axle to the ground in millimeters. If you are measuring
in inches, simply multiply the number of inches by 25.4 to get millimeters. If you want total accuracy, make
this measurement while you are sitting on the bike.
STEP 2
Multiply the above number by 6.2832 (2π). The result is your wheel circumference calculated in
millimeters.
STEP 3
Enter this resulting number into the computer (see next instructions).
PRESET VALUE
The C-350 computer has a factory preset wheel size value of 2155 (700 x 32c).

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PROGRAMMING YOUR WHEEL SIZE
Once you select miles or kilometers and press the “SET” button, the C-350 will
automatically advance into the wheel size setting mode. (See SETTING
MILES/HOUR OR KILOMETERS/HOUR)
STEP 1
The default wheel size setting of 2155 (700 x 32c) will appear on the screen with
the first digit flashing. Use the “MODE” button to advance this digit (5,6,7,8...)
until the number you want appears and is flashing.
STEP 2
When the correct number appears, press the “SET” button to select that number
and advance to the next digit. When you have finished selecting your four
numbers the screen will return to the speedometer mode. You are now ready to
install the C-350 computer on your bike.
STEP 3
To check the selected wheel circumference number, simply press the “SET” and
“MODE” buttons simultaneously. The display will show for three seconds. To reset the
wheel circumference number, press the “SET” and “MODE” buttons simultaneously
for three seconds to display current wheel size number. Again press the “SET” and
“MODE” buttons simultaneously for three seconds and the original number will blink.
Repeat the steps above to change the wheel size setting.

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To reset the wheel circumference number, press the “SET” and “MODE” buttons simultaneously for three
seconds to display current wheel size number. Again press the “SET” and “MODE” buttons simultaneously
for three seconds and the original number will blink. Repeat the steps above to change the wheel
size setting.

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PROGRAMMING THE RESETTABLE ODOMETER
Once you have programmed your wheel size setting, the computer will then
enter the programming sequence for the resettable odometer indicated by a
flashing “0000.0”. If you do not want to program the odometer, press the
“SET” button to exit the programming sequence and advance to the O mode.
If you are replacing a battery and wish to retain your mileage in the comput-
er, follow these steps:
STEP 1
Press both the “SET” and “MODE” buttons simultaneously and the last digit
(0) will begin flashing.
STEP 2
Advance the digit using the “MODE” button until you get to the desired number.
STEP 3
Press the “SET” button to confirm your selection and advance to the next
number in the sequence.
STEP 4
Repeat this process until you reach your desired mileage and all the digits
have been set. A final press of the “SET” button will complete the program-
ming sequence and advance you to the O mode.

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SETTING THE CLOCK
STEP 1
In any display mode, press the the ”MODE” button for one second to display the
clock screen.
STEP 2
While the clock display is visible, press the “MODE” and “SET” buttons simultaneously to
reset the clock and the last digit will start blinking. Press the “MODE” button until you
reach the desired number.
STEP 3
Press the “SET” button to confirm your selection. Continue this procedure until the
proper time is completely set.

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MAGNET AND SENSOR INSTALLATION

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STEP 1
Cut the plastic screw from the sensor mounting band and place the mounting
band on the fork blade with the mounting assembly facing the front of the bicy-
cle. Wrap the mounting band around your fork blade and through the slot on the
other side of the bracket, taking up as much slack as possible.
STEP 2
Insert the screw into the slot as shown. At the same time insert the sensor into
the slot in the band with the flat side of the sensor facing the wheel. The
narrow pin at the end of the screw holds the sensor in position.
STEP 3
Adjust the unit on the fork until you are satisfied with its position, then tighten the
screw until the mounting band is secure. Make sure that the sensor does not
interfere with the operation of the front brake.
STEP 4
Loosely attach the sensor magnet to one of the spokes on the sensor side of the
front wheel. Adjust the magnet position by sliding it on the spoke until you get the
magnet aligned with the alignment marks on the battery side of the sensor. Be sure
to maintain the necessary magnet-to-sensor spacing of 1-5mm.

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HANDLEBAR BRACKET AND HEAD UNIT INSTALLATION
STEP 1
Attach the computer mounting bracket to the mounting band by sliding the disc on
the top of the mounting band into the slot provided on the bracket until it snaps into
place.
STEP 2
Cut the plastic screw from the mounting band and place the mounting band on
the handlebar/stem with the mounting bracket facing up. Wrap the mounting
band around your handlebar/stem and through the slot on the other side of the
bracket, taking up as much slack as possible. Insert the screw into the slot as
shown and tighten the band with a screwdriver.
STEP 3
The head unit of the C-350 is designed to lock into its bracket. Slide the
computer from the front to the back until you hear an audible “snap” indicating
the unit is locked firmly in place.
STEP 4
Adjust the unit on the handlebar/stem until you are satisfied with its position,
then tighten the screw until the mounting band is secure.

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STEP 5
Cut off the excess band.
Do not over tighten the mounting band as this may result in breakage
(stripped screw or mounting band). The mounting band only needs to be
tightened enough to keep it from rotating on the handlebar/stem during
normal riding.
CAUTION