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Additional Cyclecomputer Calibration Procedures - Vetta

For newer models and other brands, go to our Cyclecomputer Database.


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by Sheldon "Buttons" Brown
and John "Digits" Allen
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Our Cyclecomputer database is your starting point when looking for information on cyclecomputers. It links to owner's manuals for most cyclecomputers. Sometimes we had to work without a manual, or have additional information. It's on this page for some Vetta computers.

Look for similarities in appearance and function when trying instructions for a computer not on our list. Many bicycle computers are rebranded. Please let us know of rebranded models which you have identified.

Old versions of manufacturers' Web sites preserved on the Internet Archive may list older models. A Web search on the make and model, plus "manual" or "instructions" sometimes turns up information posted by an owner. If you have information on a model not covered here, please send it in.

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Vetta Compact Cycle Computer
(Mongoose Compact Cycle Computer)

Calibration: F

Battery: 2 SR44 or MS76 silver batteries. A76 Alkaline batteries will work, but they don't last very long.

Entering "Set" mode to revise wheel size without losing mileage:

Use a ballpoint pen or other pointed object to press the "WHEEL" button (underneath unit).
The wheel calibration number will be displayed.

Changing setting:
  1. The "SET" button will select which digit is to be changed.
  2. The active digit will flash.
  3. The "WHEEL" button will advance the flashing digit.
Exiting "Set" mode:

Press "TIMER" or "MODE"

Miles/kilometers:

Recessed button on bottom selects between miles and kilometers.

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Vetta Cycle Computer, Schwinn Paramount Series 8, 10

Calibration:

Battery: 2 SR44 or MS76 silver batteries. A76 Alkaline batteries will work, but they don't last very long.

Entering "Set" mode to revise wheel size without losing mileage:

  1. Use "MODE" (RED) button to get to "ODO" mode.
  2. Press "SET" (YELLOW) button for two seconds
Changing setting:
  1. The "SET" button will select the digit to be altered.
  2. The "MODE" button will advance the selected digit.
Exiting "Set" mode:

Press the YELLOW button again.

Miles/kilometers:

Except Schwinn Paramount Series 8: After installing a new battery, use "SET" to select "KM/HR" or "M/HR". This is only a label. Reading is unaffected. To change reading between miles and kilometers, appropriate wheel calibration number must be entered. Any previously accumulated distance will then not add correctly to the added new distance, so it is best to record that distance manually if desired, and reset the computer.

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Vetta C-5, C-06

Calibration: F

C-06 owner's manual

Battery: 1 SR44 or MS76 silver battery. A76 Alkaline batteries will work, but they don't last very long.
Setting:
  1. Press the button to get to the "Odometer" mode (">>>" steady)
  2. Press and hold the button for 4 seconds to enter (m/hr)/(km/hr) setting mode.
  3. Press the button when the desired units are displayed. Calibration screen will appear.
  4. After 4 seconds the last digit will begin to flash and rotate change. Press the button when the desired digit is displayed.
  5. Repeat for remaining digits.

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Vetta C-10

Calibration: F

C-10 owner's manual

Battery 186/LR43
 
Entering "Set" mode to revise wheel size without losing mileage:
  1. Press RIGHT button to get to "Odo" mode.
  2. Press and hold LEFT button for 2 seconds.
  3. Use LEFT button to select digit to change.
  4. Use RIGHT button to advance selected digit.
Exiting "Set" mode:

Push the LEFT button.

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Vetta C-15, C-16

Calibration: F

Owner's manual

Battery 186/LR43

 
Entering "Set" mode to revise wheel size without losing mileage:
  1. In AVS/ODO mode, press and hold RIGHT button for 2 seconds.
  2. Screen will clear, and M/hr will flash.
  3. Select Miles (M/hr) or Kilometers (Km/h) by pressing the LEFT button.
  4. Press RIGHT button to confirm choice, and move to calibration number setting mode.
  5. Advance the flashing digit with the LEFT button.
  6. Press RIGHT button to accept and move to next digit.
  7. Use RIGHT button to advance selected digit.
Exiting "Set" mode:

Push the RIGHT button.

Notes:
Pressing BOTH buttons for 2 seconds in the SPD/ATM mode will reset all functions, except clock, odometer, and calibration number.

Miles/Kilometers may be changed at any time, and accumulated data will be converted automatically.

This unit features a "Freeze Frame Memory" function:

  • Press LEFT button for over 1 second to freeze the display. You may continue to ride, viewing the information on the display. The entire display will flash, indicating information is frozen.
  • Press RIGHT button to cycle through the modes. The computer will continue to record information and store it in memory.
  • Press LEFT button to update display and return to normal mode.

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Vetta C-20

Owner's manual

Calibration: A (Miles) / F (Km)

Battery: 1 SR43 or 386 silver battery. 186/LR43 Alkaline batteries will also work but will not last long.

Entering "Set" mode to revise wheel size without losing mileage:


  1. Press RIGHT button to get to "MXS/ODO" mode.
  2. Press and hold BOTH buttons for 2 seconds.
  3. Select Miles (M/hr) or Kilometers (Km/h) by pressing the RIGHT button.
  4. Press LEFT button to confirm choice, and move to calibration number setting
  5. Use LEFT button to select digit to change.
  6. Use RIGHT button to advance selected digit.
Exiting "Set" mode:

Push the LEFT button.

 

Activating "Cadence" Feature:

  1. Press RIGHT button to get to MXS/ODO mode.
  2. Press LEFT button until flashing CAD appears.
  3. Press RIGHT button and CAD will stop flashing.
  4. Press LEFT button to set.
Note:
Pressing BOTH buttons for 5 seconds in any mode will reset all functions, except clock, odometer, and calibration number.

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Vetta C-100

Calibration: F

Battery: 2 SR44 or MS76 silver batteries.

A76 Alkaline batteries will work, but they don't last very long.

Entering "Set" mode:
  1. Use "Mode" button to select "ODO" mode.
  2. Press "Set" button for 2 seconds.
Changing setting: or
  1. Use "Mode" button to select digit to change.
  2. Use "Set" button to advance selected digit.
Exiting "Set" mode:

Push the "Set" button.

Press both buttons for 2 seconds to enter Mph/Km selection mode. Release buttons when desired units are shown. Stored data will be converted to appropriate units.
Note: if Odometer reading is over 6125 miles, converting to Km will reset distance to zero.

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Vetta Wireless C-200

Calibration: F

C-200 Owner's manual

Battery:

  1. 3 volt lithium for comupter
  2. 12 volt alkaline for transponder
Entering "Set" mode to revise wheel size without losing mileage:
  1. Use RED button to get to "ODO" mode.
  2. Press YELLOW button for two seconds
Changing setting:
  1. The RED button will select the digits to be altered.
  2. The YELLOW button will advance the selected digit.
Exiting "Set" mode:

Press the YELLOW button again.

Miles/kilometers:
  1. Use RED button to get to "ODO" mode.
  2. Press YELLOW and RED buttons together for over two seconds.
  3. "KM/H" will be flashing. Use RED button to select "KM/H" or "M/H."
  4. Press YELLOW button to select choice.

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Vetta Wireless C-500

Calibration: F

C-500 owner's manual

Battery:
  1. 3 volt lithium for comupter
  2. 12 volt alkaline for transponder
Miles/kilometers and wheel size setting:
  1. Use UPPER button to get to "AVS/ODO" mode.
  2. Press the LOWER butto for over two seconds.
  3. Use UPPER button to select "Km/h" or "M/hr."
  4. Press LOWER button to accept choice.
    (Unit will enter wheel-size setting mode.)
  5. The LOWER button will select the digits to be altered.
  6. The UPPER button will advance the selected digit.

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Vetta RT33, RT55, RT77, RT88

Calibration: F

Owner's manual for these four models

These four models are very similar, differing only in features:
  • RT33 is the basic model, lacking Average speed, Maximum Speed, Speed Comparator and Ride Timer functions of higher models.
  • RT55 (and higher models) adds Average speed, Maximum Speed, Speed Comparator and Ride Timer functions.
  • RT77 is as the RT55, with cadence functions added.
  • RT88 is as the RT55, with wireless pickup.
Battery: Cr 2032 Lithium

(RT88 Wireless transmitter uses A23 12 volt battery)

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Vetta VHR25 Heart Rate Cycling Computer

Calibration: F

Manual (in Dutch!)

Battery: Lithium
 
Miles/kilometers:
  1. Check to be sure the unit is in "cycling" mode: display should show "SPD" and "M/hr" or "KM/h." If it is in "wrist watch" mode, press and hold top button for over 2 seconds.
  2. Use bottom button to get to "SPD/DST" mode.
  3. Press bottom button for two seconds
  4. "M/hr" or "Km/h" will be flashing. Use top button to select "M/hr" or "Km/h"
  5. Press bottom button to fix choice and move to wheel size mode.
Entering "Set" mode to revise wheel size without losing mileage:
  1. Use bottom button to get to "SPD/DST" mode.
  2. Press bottom button for two seconds, "M/hr" or "Km/h" will flash.
  3. Press bottom button again to enter wheel size mode
Changing setting:
  1. Bottom button will select the digits to be altered.
  2. Top button will advance the selected digit.
Exiting "Set" mode:

Press bottom button again.

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Vetta VHR50 Heart Rate Cycling Computer & Wrist Watch

Calibration: F

Battery: Lithium
 
Miles/kilometers:
  1. Check to be sure the unit is in "cycling" mode: display should show "SPD" and "M/hr" or "KM/h." If it is in "wrist watch" mode, press and hold button "B" (left side) for over 2 seconds.
  2. Use button "A" (lower left) to get to "SPD/DST" mode.
  3. Press button "A" (lower left) for two seconds
  4. "M/hr" or "Km/h" will be flashing. Use button "B" (left side) to select "M/hr" or "Km/h"
  5. Press button "A" (lower left) to fix choice and move to wheel size mode.
Entering "Set" mode to revise wheel size without losing mileage:
  1. Use button "A" (lower left) to get to "SPD/DST" mode.
  2. Press button "A" (lower left) for two seconds, "M/hr" or "Km/h" will flash.
  3. Press button "A" (lower left) again to enter wheel size mode
Changing setting:
  1. Button "A" (lower left) will select the digits to be altered.
  2. Button "B" (left side) will advance the selected digit.
Exiting "Set" mode:

Press button "A" (lower left) again.

Heart Rate Function, Training Zone Limit Setting
  1. Use GRAY button to get to "SPD/R.T." mode.
  2. Press GRAY button for two seconds
  3. Press GRAY button again to bypass memory recall and enter Upper Limit setting mode
  4. Adjust Upper Limit by pressing WHITE button, hold for fast advance
  5. Press GRAY button to fix Upper Limit and enter Lower Limit setting mode
  6. Adjust Lower Limit by pressing WHITE button, hold for fast advance
Exiting "Set" mode:

Press the GRAY button again.

Heart Rate Function, Memory Recall
  1. Use GRAY button to get to "SPD/R.T." mode.
  2. Press GRAY button for two seconds
  3. "Hi" will appear, "Hi" limit in bottom window, and actual time spent above Upper Limit in middle window.
  4. Computer will cycle through "Lo", then "In"
  5. Press GRAY button three times to return to normal operating mode

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Vetta HR1000 Heart Rate Cycling Computer

Calibration: F

Battery:
  1. 3 volt CR 2032 lithium for computer
  2. 3 volt CR 2032 lithium for chest strap transmitter
Miles/kilometers:
  1. Use GRAY button to get to "AVG/ODO" mode.
  2. Press GRAY button for two seconds
  3. "MPH" or "Km/h" will be flashing. Use WHITE button to select "MPH" or "Km/h"
  4. Press GRAY button to fix choice and move to wheel size mode.
Entering "Set" mode to revise wheel size without losing mileage:
  1. Use GRAY button to get to "AVG/ODO" mode.
  2. Press GRAY button for two seconds, "MPH" will flash
  3. Press GRAY button again to enter wheel size mode
Changing setting:
  1. The GRAY button will select the digits to be altered.
  2. The WHITE button will advance the selected digit.
Exiting "Set" mode:

Press the GRAY button again.

Heart Rate Function, Training Zone Limit Setting
  1. Use GRAY button to get to "SPD/R.T." mode.
  2. Press GRAY button for two seconds
  3. Press GRAY button again to bypass memory recall and enter Upper Limit setting mode
  4. Adjust Upper Limit by pressing WHITE button, hold for fast advance
  5. Press GRAY button to fix Upper Limit and enter Lower Limit setting mode
  6. Adjust Lower Limit by pressing WHITE button, hold for fast advance
Exiting "Set" mode:

Press the GRAY button again.

Heart Rate Function, Memory Recall
  1. Use GRAY button to get to "SPD/R.T." mode.
  2. Press GRAY button for two seconds
  3. "Hi" will appear, "Hi" limit in bottom window, and actual time spent above Upper Limit in middle window.
  4. Computer will cycle through "Lo", then "In"
  5. Press GRAY button three times to return to normal operating mode

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Vetta V100, V100A, V100HR

Calibration: F

V100 owner's manual

V100A owner's manual

V100HR owner's manual

These three models are very similar, differing only in features:
  • V100 is the basic model.
  • V100A is the same, only with an altimeter.
  • V100HR is as the V100 with heart rate monitor added, and with the thermometer functions omitted.
Battery: Cr 2032 Lithium
 
Entering "Set" mode:
  1. Press Buttton 3 until you are in SPD/DST mode.
  2. Press and hold buttons 1 and 2 for 2 seconds
  3. Screen will say "bic no 1" (Bicycle #1)
Changing setting:
  1. Button 2 increments desired value
  2. Button 1 chooses next item to be revised:
    • Bicyle 1 or Bicycle 2
    • Altitude units feet/meters (100A only)
    • Altimeter on/off (100A only)
    • Altitude value 1 (100A only)
    • Altitude value 2 (100A only)
    • Circ (wheel calibration, group F)
    • Service timer 1 (total ride time, bike 1)
    • Service timer 2 (total ride time, bike 2)
    • Speed units miles/km
    • Temperature units fahrenheit/celsius
    • 12 hour/24 hour clock
    • Time
    • Odometer total
Exiting "Set" mode:

push button 3.

 

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