Vetta V80 User manual

CYCLE COMPUTER OWNER'S MANUAL
ENGLISH

INTRODUCTION
Congratulations on your purchase of the new Vetta V-80 or V-80C cycle computer. The V-80 series
is designed for the serious cyclist with the features that really support a training program, whether
you are a road cyclist, offroad cyclist, or triathlete. The Vetta two button feature allows easy pro-
gramming and operation. The V-80 model offers seven functions for the cycling enthusiast, includ-
ing readouts on elapsed time, average and maximum speed, and trip distance. The V-80C offers the
additional function of cadence, which is essential to any training program that involves the mea-
surement and improvement of cycling performance.
COMPONENT ILLUSTRATIONS
Head Unit Sensor Bracket Battery Magnet V-80C
Cadence Sensor
V-80C
Cadence Magnet

FUNCTION LIST
SPEEDOMETER (SPD) (Mi/hr or Km/hr)
Tells you your current speed on the upper line of the display screen at all times.
CUMULATIVE ODOMETER (ODO)
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 (DST)
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 (RT)
Elapsed time begins when the wheel begins to rotate. It starts automatically

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. Average speed will show
an “E” for error. Distance (DST) and maximum speed (MXS) will continue to
accumulate. To clear the elapsed time press the “SET” and “MODE” buttons
while in the elapsed time mode.
MAXIMUM SPEED (MXS)
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 (AVS)
Your average speed is calculated using your true ride time and trip distance. The
minimum unit displayed is 0.1 Km/hr or Mi/hr.
DIGITAL 12/24 HOUR CLOCK(MODEL V-80) DIGITAL 24 HOUR CLOCK(MODEL V-80C)
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.

CADENCE (RPM) (MODEL V-80C ONLY)
Crank arm cadence (RPM) is displayed from 15 to 199 RPM.

FEATURE LIST
RESETTABLE ODOMETER (V-80)
The cumulative odometer on the V-80 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
V-80 or V-80C will automatically restart itself as soon as the unit receives input from the wheel.
AUTO SCAN V-80
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. V-80C ONLY–Select any mode except odometer, press and hold the “MODE” button,
thrn press the “SET” button to activate. Follow the same steps to deactivate the Auto Scan mode.

ALL CLEAR TOTAL RESET V-80
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/hr symbol displayed. The unit is now ready
to reprogram. Do not clear the computer unless you need to reprogram the unit. V-80C ONLY–Select the
odometer mode and press the “SET” button for 10 seconds. Unit will revert to the programming mode with
a flashing Km/hr display.
USER MODIFIABLE SCREEN (MODEL V-80C ONLY)
The screen positions for the Speed and Cadence readings can be easily switched. In the Cadence mode,
press and hold the SET button, then press the MODE button at the same time. Speed (SPD) will be dis-
played on the lower line and Cadence (RPM) on the upper line. Press SET then MODE buttons again and
the display will change back.

The V-80 and V-80C 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 problems that occur with cycle computers are caused by dead or weak bat-
teries. 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

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 (UPPER LEFT)
The “SET” button confirms, resets, or clears numbers.
“MODE” BUTTON (LOWER LEFT)
The “MODE” button starts, stops, or moves in a loop sequence from one function
to another.
BUTTON FUNCTIONS

SETTING MILES/HOUR OR KILOMETERS/HOUR (V-80)
After the battery is installed, all of the displays will be illuminated. Km/hr 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 V-80 or V-80C cycle computer, you are ready to
begin programming 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.

SETTING MILES/HOUR OR KILOMETERS/HOUR (V-80C)
After the battery is installed, all of the displays will be illuminated. Km/hr 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.

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.

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 V-80 and V-80C computers have a factory preset wheel size value of 2155 (700 x 32c).

PROGRAMMING YOUR WHEEL SIZE (V-80)
Once you select miles or kilometers and press the “SET” button, the V-80 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 V-80 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.

PROGRAMMING YOUR WHEEL SIZE (V-80C)
Once you select miles or kilometers and press the “SET” button, the V-80C 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 V-80C computer on your bike.
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.

STEP 3
To check the selected wheel circumference number, simply press the “SET” and “MODE” buttons simultaneous-
ly. 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.
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.

PROGRAMMING THE RESETTABLE ODOMETER (V-80)
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 ODO
mode. If you are replacing a battery and wish to retain your mileage in the
computer, 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 ODO mode.

SETTING THE CLOCK V-80
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.

SETTING THE CLOCK V-80C
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.

MAGNET AND SENSOR INSTALLATION
We recommend that you install your V-80 or V-80C computer in the following
manner, starting with the sensor unit on the fork and working up to the mounting
bracket on the handlebar.
STEP 1
Mount the Vetta universal sensor loosely (so that you can slide it around) to the
fork blade using the zip-tie provided. The sensor can be mounted at any point
along the fork. However, we recommend a position on the back side near the top
of the left fork blade. This position will help protect the sensor from being hit by
rocks, tree branches and other objects.
STEP 2
Again, loosely attach the sensor magnet to one of the spokes on the left side of
the front wheel. Adjust the magnet and sensor positions by sliding both pieces
around until you get the sensor as high on the fork blade as possible while still
maintaining the necessary magnet-to-sensor spacing (1-2mm).
NOTE: The magnet should pass within 1-2mm of the sensor, and the top of the
magnet should be no higher than the top of the small arrow molded into the face
of the sensor .
Sensor Diagram