Installation Tests; Problem/Items To Check/Solution - Vetta RT55 Manual

RT88 only - Attach the WL wireless speed transmitter with the zip-ties supplied and tighten the spoke
magnet to the bicycle. Adjust the transmitter and magnet spacing with the spacer. Remove the spacer
after snugging the zip-ties down to hold the transmitter in its final position. (See Figures above)
MOUNTING BRACKET & HEAD UNIT
OUT
IN
Locking
Tab
UNLOCK

INSTALLATION TESTS

Once installation is complete, the computer should be tested to make sure it is working properly.
To test speed installation:
Advance the computer to the SPD screen mode using Button #2.
Step 1:
Pick up the front of the bicycle and spin the front wheel. The computer should display a
Step 2:
speed reading within 2-3 seconds.
If there is no speed reading, check the alignment and spacing between the magnet and
sensor/transmitter. Make sure that the head unit is completely locked into position and the
handlebar mount is not over tightened. If this check does not solve the problem, talk to your Vetta
Retailer or connect to www.vetta.com.
To test cadence installation:
Turn the crank backwards or ride the bike a short distance. After a few revolutions, a cadence reading
should appear on the lower line of the SPD/CAD display. If there is no cadence reading, check the
alignment and spacing between the magnet and sensor.
IMPORTANT: Following the installation tests above, make sure that the spoke magnet
locking screw and all zip ties are properly tightened. CAUTION: Do not over tighten!

PROBLEM/ITEMS TO CHECK/SOLUTION

•
Current speed reading is erratic or does not appear.
Check the alignment of the wheel magnet and sensor, and the distance between the two
components. Realign the magnet and sensor with the spacer.
•
Current speed reading is erratic or does not appear.
Inspect the wiring for any breaks or kinks. Replace mounting bracket and sensor as needed.
•
Incorrect data appears on screen during operation.
Accuracy of the Setup data may be a problem (wheel size setting, etc.).
•
Data display is extremely slow.
Computer LCD does not like extremely low temperatures. Operating range is: 0
º
122 F. Return the computer to a warmer climate.
Head Unit
Locking
Tab
UNLOCK
Wired
Mount
Cadence RT 77
Attach mounting
Note:
Be sure to leave
enough slack in the wire to
accommodate the movement
of fork and handlebars.
Tighten mounting bracket as
needed. (See fig. "A") Slide
main unit into bracket as
shown (left) until it clicks into
position. Remove by pressing
in the two locking tabs as
shown. Secure wire with tape
supplied and by winding it
around cables.
º
C to 50
bracket.
º º
C or 32 F to