Instruction Manual
Contents
1. Acumen inc i A www vetta com Ld 2006 All Rights Reserved RT255 RT255L RT277 RT288 RT288L TR ue K w NGLISH WARNINGS amp CAUTIONS Vetta s RT200 series are the upgraded version of all RT series cycle computers It is recommended that these products are to be installed by a qualified bicycle retailer Failure to read the instructions and or improper installation of the device may void the warranty If you have any doubts about the installation or the operations contact your local bicycle retailer for clarification FUNCTIONS FEATURES RT255 RT255L RT277 RT288 RT288L Heavy Duty Metal Braided Cable e Wireless Transmission Replaceable Front Cover e Screen Display Window 3 3 3 3 3 NiteLite w SmartLite EZ Tire Set e e Service Timer e Speed Comparator Auto Awake amp Start up Energy Efficient programmable Auto Start Current Speed Average Maximum Speed Ride Time e Cumulative Odometer e Multi Freeze Frame Memory 11 16 11 11 16 a e e e A A Current Average Maximum Cadence HEAD UNIT 1 Button 3 Button 5 Main Display 7 Battery Compartment 2 Button 4 Button RT255L 288L 6 Contact Pins RT255 255L 277 8 Battery Cap COMPONENTS 1 Wired Spd Sensor with Mounting Bracket 7 Wireless Mounting Bracket wi2. average speed between point and point AVG Cad average cadence between point and point Split Time total time from point to point Recording Lap Data Press if it has been pre programmed to Lap function at any time in any Normal Modes to record When recording the laps the icon s ra will flash and Lap will display on middle screen the starting point of Lap 1 will be Str After storing the data screens of LAP TIME AVG SPD LAP TIME AVG CAD SPLIT TIME LAP DST will turn on in sequence then flip back to the previous Normal Display Mode Note 1 The icon LAP indicates the Lap function has been chosen Laps can only be recorded when the wheels turn It will not record a new lap if is pressed consecutively within 5 seconds New Lap cannot be recorded when in the Recall Mode Up to 10 or 15 for RT255L 288L sets of Lap data LAP TIME AVG SPD AVG CAD SPLIT TIME amp LAP DST can be stored The computer will stop record new lap if it is more than 10 The middle screen will show F with any further press of the button 6 If the Lap Time or Split Time is longer than 99 hours and 59 minutes or the Lap Distance is longer than 999 9 KM or Miles the computer will stop recording new lap The middle screen will show E with any further press of the button RT277 Only Ter Reading Lap Data rm Lt I Lt
3. 999 9 miles kilometers symbol E appears indicating that further measurement Note When the Ride Time exceeds 99 hours and 59 minutes or the Trip Distance exceeds 999 9 miles kilometers symbol E appears indicating that further measurement OTHER FEATURES SLEEP MODE r Computer enters Sleep Mode after 5 minutes without input from any buttons or wheel and displays the clock only Computer exits Sleep Mode and returns to the screen last displayed when any button is pressed or the wheel turns if the Auto Start is pre set to OFF RT288 288L PM XR te 1 Ch Choe SMARTLTE can only exit the Sleep Mode when any button is pressed RT 255L 288L SmartLite will activate the NiteLite for 3 seconds between the user defined period when any button is pressed see Section of SmartLite Setup SERVICE TIMER Blinking DST X alerts riders when the Service Time is reached SPEED COMPARATOR va _ ava AYG XL cAn ig cAn cr RPM al oe RPM l E are 18 M hr f M7 Lt wt DST a DST ior a Speed Comparator Arrow symbols indicate if current speed is slower or faster A than current average speed FREEZE FRAME MEMORIES RT255 255L 277 288 288L RT 0 00 00 DST 0 0 Km Store the Ride Data as F1 Press Button and Press Button for F2 Press Button for F15 Press Button for F16 Example Ride Time of F2 t
4. Button amp All Clear Total Reset NILLEN BATTERY INSTALLATION HEAD UNIT The RT200 series Head Unit use CR2032 3 Volt Lithium button Cell batteries Battery Run Time 1 hour training day Approx 12 months RT255 255L 277 Approx 8 months RT288 288L Important Most cycle computer problems are caused by weak or dead batteries See the Trouble Shooting section near the end of the manual for details 1 Remove the battery cap from the bottom of the Head Unit using a coin 2 Install a new battery as shown with the positive side facing out Do not touch or bend any of the battery contacts during installation 3 Screw the battery cap firmly into place and make sure that the O ring seal does not get pinched or distorted Caution To avoid damage to the battery cap do not over tighten WL WIRELESS SPEED TRANSMITTER rRT288 288L The WL Wireless Speed Transmitter uses an A23 12 Volt battery Remove the battery compartment using a coin and install the battery in it with positive side in then replace the battery compartment Battery Run Time 1 hour training day Approx 10 months A23 12V INSTALLATION Important Do not use Zip Ties use the tapes provided with the package to hold wires to the frame fork bars or stem to avoid damaging or cutting the wires accidentally Make sure excess wire is taped down or wrapped around brake cable housing to secure it WIRED SPEED SENS
5. Unit is within 70 cm At the same time the Transmitter should be 2 4 cm or more away from the brake to avoid blocking transmission signals by the brake Adjust the transmitter and magnet spacing with the Spacer Slide and rotate the transmitter until the alignment mark just touches the spacer tip on the magnet Remove the Spacer after snugging the Zip Tie down to hold the transmitter in its final position Magnet Sweep Path Magnet Bladed Spoke Wireless Speed Magnet Transmitter MOUNTING BRACKET amp HEAD UNIT RT255 255L 277 288 288L Attach Mounting Bracket amp Bracket Rubber Pad to the handlebar on the Sensor Transmitter side using the Zip Ties provide Adjust its position to your liking and tighten the Zip Ties Note Be sure to leave enough slack in the wire to accommodate the movement of fork and handlebars See Fig A Slide the Head Unit into the Mounting Bracket as shown until it clicks into position Remove by pressing in the two locking tabs as shown Head Unit ee ere Locking Tab Locking Tab Secure wire with tape supplied and by winding it around cables nee ee Wired Mounting Bracket INSTALLATION TESTS Once installation is complete the computer should be tested to make sure it is working properly To test the Speed Sensor Transmitter installation Pick up the front of the bicycle and spin the front wheel The LCD should display a speed reading w
6. a front or rear shock The default settings 0000 means the Service Timer is turned off Press to scroll flashing hr hour day or dst distance as the Service Timer unit Press to select the desired Service Timer unit When the desired Service Timer unit has been chosen press to scroll the flashing digit to the desired number Press to select this number and advance to next digit Repeat this procedure until all digits are selected Press to advance the next Setup Mode Maximum settings hour day distance 1999 999 9999 M hr KM hr SET SET PE P Pi EE EE EE O O ged Fis 7 gt SET SET SET SET L marry rrr rrr mo Lene Lees LOL Lee LOL bee ye Tn tins fins DE a we DE E a DE E pe O 1 SET SET SET SET A nmr mre mre iM DE E a EEEE Lees Lees ye ACL AGL ACL aar aar oac Q 1 an eal on on a on SET SET SET SET IEL nmr r r rm aIL LILO LOL LiL Ley LILO LO to reset to zero next Setup Mode Important WHEEL TIRE SIZE Press to toggle between flashing circ circumference and tire tire type Press to select the desired and advance the settings When the Ride Time the elapsed time for Service Timer or the elapsed distance begins
7. the original sales receipt showing proof of purchase date The Company is not responsible for loss or additional damages while in transit to ACUMEN INC Clearly mark the RA on the outside of the return packaging All items without an RA will be refused and returned to the return address on the package The Company shall not be held responsible for replacing items with new items for greater than the amount of the original item purchase price This limited warranty does provide the original owner with certain legal rights and recourse The original owner may possess other rights or recourse depending on the state or country Please check the web to help answer any question and service manual ACUMEN INC CUSTOMER SERVICE CENTERS Acumen Inc 101A Executive Dr Suite 100 Sterling VA 20166 USA Acumen Europe BV Splijtoakweg 117 1333 HJ Almere The Netherlands Email customerservice vetta com Website www vetta com
8. OR amp MAGNET RT255 255L Attach the Wired Speed Sensor with the Zip Tie supplied and tighten the Bladed Spoke Magnet to the bicycle Mounting the sensor as high up as on the fork leg Fig A Adjust the sensor and magnet spacing with the Spacer Remove the Spacer after snugging the Zip Tie down to hold the sensor in its final position Bladed Spoke Magnet Magnet Sweep Path Spoke Bladed Spoke Magnet Wired Speed Sensor Fork Leg jm Bladed Bladed Spoke Magnet Spoke Magnet Alignment Mark Wired Speed Sensor WIRED CADENCE SENSOR amp MAGNET RT277 Attach the Wired Cadence Sensor amp Composite Cadence Magnet with the Zip Ties supplied to the bicycle Adjust the sensor amp magnet spacing with the spacer Remove the Spacer after snugging the Zip Ties down to hold the sensor in its final position Composite Cadence Magnet agnet Sweep Path M a Crank Arm Composite Wired Cadence Sensor Cadence Magnet Spacer Wired Cadence Sensor A Composite Composite Cadence Magnet Alignment Mark Cadence Magnet WL WIRELESS SPEED TRANSMITTER amp MAGNET RT288 288L Tie the WL Wireless Speed Transmitter with Bracket Rubber Pad loosely by the Zip Ties supplied to either in the front of the left fork leg see Fig 1 A or at the back of the right fork leg see Fig 1 B For best signal reception make sure the distance between the Transmitter and the Head
9. ange of Fr from 1 00 PM to 11 00 PM range of To to 1 00 AM to 11 00 AM Press to select and exit the Setup mode Z ILE dha hh ser mr LO Press 2 to toggle between flashing OFF or ON Press to select 14 and advance to next Setup Mode FUNCTIONS The types and number of Modes of the upper screen are same as the lower screen Depending on users habits they can decide where to put the desired Modes either on the upper or lower screen Press to change the Upper Screen Modes Press to change the Lower Screen Modes To enter the NOM Setup Mode press amp hold amp simultaneously for 2 seconds when the lowest screen is in the CLK Mode Press at anytime to exit To reset all ride data DST AVG SPD MAX SPD RT AVG CAD MAX CAD to zero press amp hold and simultaneously for 2 seconds when the lowest screen is in the DST Mode RT277 Only AS od DEE RT 255 255L 277 288 288L DST Speed is shown at all times on middle display It is accurate to 0 1 M hr or KM hr and the maximum reading is 139 9 M hr or 199 9 KM hr RAE RT 255 255L 277 288 288L RT displays actual cumulative ride time to 100 hour If the time is less than 9 59 59 hours the cry display format will be h mm ss eg 0 09 59 means 9 minutes and 59 seconds If the time is longer than m 10 hours the format will be hh mm without seconds eg 11 28 means 11 hours and 28 m
10. e 3 year limited warranty is conditioned upon the components being used and operated in normal riding conditions This warranty does not cover normal wear and tear i e battery replacement broken wire rider abuse acts of God improper installation or product alteration This warranty is void if the components were not purchased new from or through an authorized VETTA retailer or dealer Examples of unauthorized dealers are online auction sites or online retailers ACUMEN INC at its sole discretion will repair or replace items at its own cost Users are responsible for all freight and shipping charges when returning items for warranty service ACUMEN INC will pay the freight when returning serviced items via USPS or UPS to consumers or dealers once the item s has been repaired or replaced dass oer bo idapeathand FOR WARRANTY SERVICING Prior to shipping an item back you must first obtain a Return Authorization Number s RA Each item being returned must have an individual RA 2 To obtain an RA you must either contact the retailer where the product was originally purchased from or contact VETTA directly at customer service vetta com 3 For trouble shooting purposes we request that the complete unit with packaging be returned to ACUMEN INC unless otherwise stated by VETTA representative ITEMS TO BE INCLUDED IN RETURNS The defective product s A letter clearly stating the problem s with the returned item s Copy of
11. e flashing digit to the desired number Press to select this number and advance to next digit Repeat this procedure until all five digits are selected Press to advance the next Setup Mode Maximum setting 99999 When Auto Start is On The computer exit the Sleep Mode as soon as it receives the speed signal or any button is pressed When Auto Start is Off To conserve battery run time the computer will only exit the Sleep Mode when any button is pressed rrr rrr re o PLL a Lee ees AUTO START RT288 288L ee Don _ Mowe i Mowe 8 SET Auta SET Meco ma woe vt Note The icon ET in the Normal Display Modes indicates the programmable Auto Start has been chosen Se a AN eM RT 255 255L 277 288 288L Press to scroll the flashing F Freeze Frame Memory LAP Lap Data and OFF both of Freeze Frame Memory and Lap Press to select and advance to next Setup Mode Note The icon a or rin the Normal Display Modes indicates F or Lap has been chosen a on mee Leo SMARTLITE SmartLite will turn on the night light for 3 seconds between pre set intervals when any button is pressed Press to toggle between OFF and ON When SmartLite is set to OFF press to exit the Setup Mode When SmartLite is set to ON press 4 to select and advance the hour setting Press to advance the hour digits to desired hour r
12. he Press amp hold for 2 seconds in the any Mode to read the ae l frozen ride data The Lap recall screens display the most l recent set first Flashing L T indicates it is in the Lap recall is 7 o screens Press momentarily to scroll the Lap data screens jJ and press momentarily to scroll the Lap LAP TIME AVG SPD Note Gy iiixtals m 1 I there is no lap data recorded the middle digits will show TM os LOLOL TM bt os 1 2 To reset the Lap data to zero press amp hold amp e ma simultaneously when the lowest screen is in the DST Mode as ar a 3 If no button is pressed for 1 minute the recall screen will Z return to the previous Normal Mode automatically yo LAP TIME AVG CAD 4 Press amp hold for 2 seconds to switch the Lap screens RT277 only to F ride data screens if there are 2 or more than 2 sets DaT a l Ma of frozen ride data Flashing indicates it is in the F rm Lt OI aul recall screens Press amp hold again to change back f Press to exit an J l D i ner SPLIT TIME LAP DST ALL CLEAR TOTAL RESET All data entered in Setup Modes as well as ride data including the Multi Freeze Frame Memories and Laps can be cleared by performing an All Clear Total Reset To clear the computer press amp simultaneously for 3 seconds in any Mode The master screen will appear and show all segments then automatically enter the Initial Setup Mode TROUBLE SHOOTING e Current s
13. inutes DEJES RT 255 255L 277 288 288L 0 SPD DST DST displays trip distance of current ride to a maximum of 999 9 mg miles or kilometers It is accurate to 1 Mile or KM Average Speed is accurate to 0 1 M hr or KM hr Maximum Speed is accurate to 0 1 M hr or KM hr Average Cadence is calculated by dividing total revolutions of the crank by the total ride time Maximum Cadence is updated once per second based on current Cadence readings SPD aE DST a ga mE mar Note When the Ride Time exceeds 99 hours and 59 minutes symbol E appears indicating measurement is impossible that further Note When the Trip Distance exceeds 999 9 miles kilometers symbol E appears indicating that further measurement is impossible Note When the Ride Time exceeds 99 hours and 59 minutes or the Trip Distance exceeds 999 9 miles kilometers symbol E appears indicating that further measurement is impossible Note When the Ride Time exceeds 99 hours and 59 minutes or the Trip Distance exceeds 999 9 miles kilometers symbol E appears indicating that further measurement is impossible is impossible is impossible Clock is displayed in user selected 12 or 24 hour formats Note When the Ride Time exceeds 99 hours and 59 minutes or the Trip Distance exceeds
14. ithin 2 3 seconds To test the Cadence Sensor installation RT277 Advance the LCD to the CAD Mode using or Turn the crank backwards or ride the bicycle a short distance After a few revolutions a cadence reading should display on the LCD If there is no speed reading or cadence reading check the alignment and spacing between the magnet and sensor transmitter Make sure that the Head Unit is completely locked into position If these checks do not solve the problem talk to an Authorized Vetta s Retailer or connect to www vetta com Important Make sure the magnets locking screw and all Zip Ties are properly tightened SETUP amp PROGRAMMING In Setup Button is used to select or set a value and to advance to the next digit or Mode Button is used to switch between settings and to increase values Initial Setup All RT200 series computers are programmed to enter the Initial Setup Mode after new battery replacement or all clear total reset press amp simultaneously for 3 seconds in any Mode In the Initial Setup riders can program the Basic Settings for the computer the content of settings are same as NOM Setup for Basic Setting Important The computer CANNOT exit the Initial Setup Mode until all the Basic Settings are finished NOM Setup After completed the Initial Setup riders can change any values or correct any errors by re entering the NOM Setup To enter the NOM Setup Mode press amp hold amp sim
15. otal ride time from point to point Distance of F2 total distance from point to point AVG MAX Speed average or maximum speed from point Oto point AVG MAX Cad average or maximum cadence from point to point Recording Ride Data Press if it has been pre programmed to Freeze Frame Memories at any time in any Normal Modes to record When recording the Frames the icon F will flash and the F will display on middle screen After the recording screens of RT DST AVG SPD MAX SPD AVG CAD MAX CAD will turn on in sequence then flip back to the previous Normal Display Mode Note 1 The icon indicates the Multi Freeze Frame Memories has been chosen Freeze Frames can only be recorded when the wheels turn It will not record new memory if is pressed consecutively within 5 seconds New set of Freeze Frame cannot be recorded when in the Recall Mode Up to 11 or 16 for RT255L 288L sets of Freeze Frame RT DST AVG SPD MAX SPD AVG CAD MAX CAD can be stored The computer will stop record new memory if it is more than 11 16 and the middle screen will show F with any further press of the button 6 If the Ride Time is longer than 99 hours and 59 minutes or the Distance is longer than 999 9 KM or Miles the computer will stop recording new memory The middle screen will show E with any further press of button RT277 Only aaron Reading Freeze Frame Memories Press amp hold for 2 seconds in
16. peed reading is erratic or does not appear Check the alignment of the bladed spoke magnet and sensor transmitter and the distance between the two components Realign the magnet and sensor transmitter with the spacer OR Inspect the wiring for any breaks or kinks Replace Mounting Bracket and sensor as needed RT 255 255L 277 e Incorrect data appears on screen during operation Accuracy of the Setup data may be a problem wheel size setting etc Review data in System Check mode and revise as needed e Data display is extremely slow Computer LCD screen operates the best under the following temperature range Operating range is 0 C to 50 C or 32 F to 122 F e Screen is dark and display erratic characters Do not leave the computer in direct sunlight for extended periods of time Move the computer into the shade until the screen recovers Noted Data will not be affected e Screen reading is weak or fading Screen readings are erratic and read too high or too low Screen frozen no response to buttons Symptom of a weak battery Replace the battery e No display whatsoever Battery is completely dead or not installed Replace or install the battery WARRANTY POLICY ACUMEN INC WARRANTS ALL VETTA The Company PRODUCTS AGAINST MANUFACTURER DEFECTS FOR A PERIOD OF 3 YEARS Subject to the following limitations terms and conditions components will be free of manufacturing defects in materials and workmanship Th
17. th Heavy Duty Harness 8 Wireless Transmitter Shim 2 Wired Spd amp Cad Sensor with Mounting Bracket 9 Bladed Spoke Magnet with Heavy Duty Harness for Rear Wheel Pick up 10 Composite Cadence Magnet 3 Extra Clear Front Cover 11 Spacer 4 Bracket Rubber Pad 12 Head Unit Battery CR2032 3 Volt 5 Bracket Rubber Pad Riser Handlebar 13 Wireless Transmitter Battery A23 12 Volt 6 WL Wireless Speed Transmitter 14 Wire Securing Tape RT255 255L includes OOOO OO OO 15 Zip Ties RT277 includes OO OOD DO DO RT288 288L includes O OOOQOO D O OB LCD DISPLAY MAXJ o m e eT ranu HH Hi H 1 Upper Display 8 Function Icons REM 2 Middle Display Speed 9 RPM RT PM TM Icon a 3 Lower Display 10 Speed amp Split Time Icon a H l ie 4 Service Timer Low Battery Icon 11 Freeze Frame Memory Icon EET N Va Va CST TT 5 Speed Comparator Icon 12 Lap Icon 6 Speed Distance Units 13 Auto Start Icon KJENN aj 7 Setup Mode Icon BUTTON FUNCTIONS Press momentarily Button Upper Screen Modes Button Lower Screen Modes Button F Button or Lap Button Button NiteLite RT255L 288L Press amp hold for 2 seconds Button Recall Freeze Frame Memories or Lap Data Button amp when the lowest screen is in the CLK Mode NOM Setup Button amp when the lowest screen is in the DST Mode Reset ride data to zero including the Frozen screens or Lap data
18. the any Mode to read the frozen ride data The recall screens display the most recent set first Flashing a indicates it is in the F recall screens The middle digits flips between the F amp the recorded speed for every 2 seconds Press momentarily to scroll the F ride data screens and press momentarily to scroll the F yo a EIEL Note O ea 1 lf there is no frozen screen recorded the middle digits will LL show ot HH 2 Toreset the Freeze Frame Memoires to zero press amp hold amp simultaneously when the lowest screen is in yo the DST Mode TDA T 3 If no button is pressed for 1 minute the recall screen will nr he VLE return to the previous Normal Mode automatically 4 Press amp hold for 2 seconds to switch the F ride data TYE screen to Lap screens if there are 2 or more than 2 sets wr nJ of frozen ride data Flashing EZTA indicates it is in the LAP recall screens Press amp hold again to change back Press to exit AVG CAD MAX CAD RT277 only LAP FUNCTION R1T255 255L 277 288 288L Lap 15 Lap 1 Lap 2 lt gt Start lt gt a 0 0 o o o RT 0 00 00 Press Button at Press Button at Press Button at Press Button at DST 0 0 Km Example Lap Time of Lap 2 total ride time between point and point Lap Distance of Lap 2 total distance between point and point AVG Speed
19. to flash press OR press to reserve the digits and advance to the In the Initial Setup the elapsed time distance for Service Timer doesn t exist If pre set to circ see Table of Tire Size Vs Circ press to scroll the flashing digit to the desired number Press to select this number and advance to next digit Repeat this procedure until all four digits are selected If pre set to tire press to scroll the flashing 700c 650c 27in 26in 24in 20in or 16in Press to select and advance to next setting to complete the Tire Size Again press to scroll and press to finalize the Tire Size and advance to the next Setup Mode rower rower Lok Lok L 1 Q 2 gt gt gt SET SET SET rarer T r iL J LOL moe hee L ye Lower Lower ba Lok Lok L 1 2 1 gt gt gt SET SET SET LIY r aT 3a 2 LOL O ht Ol TIRE SIZE CIRC TIRE SIZE CIRC TIRE SIZE CIRC CIRC 700c x 38mm 2180 700cx 20mm 2074 26 x 2 25 2115 1913 700c x 35mm 2168 700c Tubular 2130 26 x 2 1 2095 1916 700c x 32mm 2155 650cx 23mm 1990 26 x 2 0 2074 1618 700c x 30mm 2145 650c x 20mm 26 x 1 9 1 95 1253 700c x 28mm 2136 27 x 1 25 26 x 1 75 1257 700cx25mm 2124 27 x 1 125 26 x 1 5 1206 700cx23mm 2105 26 x 2 3 26 x 1 25 1953 ODOMETER Press to scroll th
20. ultaneously when the lowest screen is in the CLK Mode Press any time to exit and advance to the previous Mode 12 24 CLOCK r Press to toggle between flashing 12 and 24 hour formats Press to select your desired format without PM icon implies AM in 12 hour format and advance to Time setting SET LI a SILI mee L h OU OBL RT 255 255L 277 288 288L Press to advance hour digits to correct hour hold button for rapid advance Press to select and advance to minute setting Press to advance minute digits to correct minute Press to select and advance to the next Setup Mode S Q gt gt SET SET SET SET arr cer iC era rear a A O R D R N A J S SPEED DISTANCE UNIT Press to toggle between flashing M hr and KM hr Press to select and advance to the next Setup Mode Note Speed Distance Unit cannot be changed if there have been ride data on screens If you want to change the Unit please make sure you had cleared all ride data before entering the NOM Setup Mode This J restriction does not apply to the Initial Setup after the 1t time battery installation new battery replacement or All Clear Total Reset SERVICE TIMER Service Timer could be programmed with a selected number of ride time hours or days or distance as the interval for servicing the bicycle or any component on it such as
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