VDO Cyclecomputing C1DS, C4DS, C3DS, C2DS Instruction Manual

CYCLECOMPUTING

BEDIENUNGSANLEITUNG

INSTRUCTION MANUAL

MANUEL D´INSTALLATION ET D´UTILISATION

MANUALE D´INSTALLAZIONE E FUNZIONAMENTO

INSTALACION Y OPERACIÓN MANUAL

HANDLEIDING

C1DS C2DS C3DS C4DS

P01

*Watch out: old batteries require special disposal

* *

P02

Battery

CLOSEOPEN

CLOSEOPEN

P03

1-6 mm

screw

P04

OPEN CLOSE

P05

P06

AC-button

WS in mm / inch

1x

P07

P08

Tire size WS in mm KMH WS in inch MPH

47-305 16x1,75 1272 50,1
47-406 20x1,75 1590 62,6
34-540 24x1 3/8 1948 76,7
47-507 24x1,75 1907 75,1
23-571 26x1 1973 77,7
40-559 26x1,5 2026 79,8
44-559 26x1,6 2051 80,7
47-559 26x1,75 2070 81,5
50-559 26x1,9 2089 82,2
54-559 26x2,00 2114 83,2
57-559 26x2,125 2133 84,0
37-590 26x1 3/8 2105 82,9
20-571 26x3/4 1954 76,9

Tire size WS in mm KMH WS in inch MPH

32-630 27x1 1/4 2199 86,6
40-622 28x1,5 2224 87,6
47-622 28x1,75 2268 89,3
40-635 28x1 1/2 2265 89,2
37-622 28x1 3/8 2205 86,8
18-622 700x18C 2102 82,8
20-622 700x20C 2114 83,2
23-622 700x23C 2133 84,0
25-622 700x25C 2146 84,5
28-622 700x28C 2149 84,6
32-622 700x32C 2174 85,6
37-622 700x37C 2205 86,8
40-622 700x40C 2224 87,6

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IMPORTANT!

This information will help you understand how the digital transmission of your
VDO computer works. You really must follow the initial set-up steps in the order
described below.

ATTENTION:

At a break during your ride the receiver will be switched off after 30 minutes
(battery consumption). Before continuing your ride you need to switch on the
receiver again = press M-button

IMPORTANT HINT for cell (mobile) phone brackets on the handlebar.
The digital wireless transmission of you VDO DS computer is likely
to be disturbed if you are operating a cell (mobile) phone too close
to the computer. We highly recommend not mounting your phone on
the handlebar.

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IMPORTANT: General hint to read this manual:
This manual is valid for all VDO Series-C models. Some functions and

features are not available with all models. The “flag” icon on the beginning
of a chapter indicates which model this chapter is relevant for.

C1DS
C2DS
C3DS
C4DS

= valid for models C1DS,

C2DS, C3DS & C4DS

C3DS
C4DS

= valid for models

C3DS & C4DS

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C1DS
C2DS
C3DS
C4DS

Contents >>> P01

Please check package contents for its completeness:

1 VDO computer
1 VDO digital transmitter
2 Battery 3V CR2032 for the computer and transmitter
2 Battery door for the computer and transmitter
1 Handle bar mount
1 Fixing clamp
1 Spoke magnet
4 Cable ties to fix transmitter

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C1DS
C2DS
C3DS
C4DS

Preface

Congratulations!

With your choice of a VDO cycle computer, you have decided to own the most advanced
technology available.

To enjoy the full potential of your computer and benefit from all the technical features, we
recommend you thoroughly study this manual. You will find crucial hints for its operation as
well as many more tips.

We wish you many enjoyable rides and trips on your bike with your VDO cycle computer.

CYCLE PARTS GMBH

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C2DS
C3DS
C4DS

Index part I

1.0 VDO DIGITAL SYTEM

1.1 Welcome to the club: your VDO-USER-CARD

1.2 Functions

1.3 Optional features

2. Installation

2.1 Battery installation (computer and transmitter)

2.2 Mounting sensor and magnet

2.3 Mounting cable and VDO any-size handlebar mount

2.4 TWIST-CLICK mounting of the computer

2.5 The 4-line VDO display

2.6 The VDO EMC-operating-system (Easy-Menu-Control)

2.7 Functions / menu structure
Fundamental instructions to read this manual

3. Initial operation, AC-“auto-clear“

3.1 Manual Transmitter Search – DIGI CONNECT RESET

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C2DS
C3DS

4 Basic settings

4.1 Language selection

4.2 Measuring and setting the wheel size(s)

4.3 Setting the clock

4.4 Setting the odometer

4.5 Changing wheel sizes from bike 1 to bike 2

4.6 Reset functions

5. Service-Interval-Indicator

6. Sleep-Mode

7. Cadence (optional)

Index part II

8. Stopwatch

Important hint:

„>>> P04“ links at the begin­ning of a chapter are related
to the respective picture in the
picture book!

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C3DS
C4DS

C4DS

C1DS
C2DS
C3DS
C4DS

Index part III

9. NAVIGATOR functions

Index part IV

10. Timing functions

10.1 Selecting timing functions

10.2 Timer/countdown programming

10.3 Timer/countdown/stop watch start/stop/reset

10.4 Additional countdown functions

Index part V

11. Troubleshooting

12. Warranty disclaimer

13. Technical specifications

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C2DS
C3DS
C4DS

1.0 VDO DIGITAL SYTEM

Your VDO cycle computer operates on digitally coded, wireless transmission. Different from
analogue radio transmission, data is digitally transmitted (data packages step-by-step). With
your actual speed varying, the reading will change stepwise. Individual coding of the signals
ensures that only data coming from your transmitter is processed. No interference with
signals coming from transmitters other than yours. Very rarely, even digital transmission may
be interfered by high-voltage power lines, mobile phone poles, remote controls (car doors
openers, garage door openers).

What happens when digital transmission is interfered with?

- speed display will read zero (0)

- trip distance stops counting

- ride timer stops counting

The digital VDO transmitter features an internal memory, that stores up to 45 sec of data at a
speed of 20 KMH (12,5 MPH). At a rare interference, no data is lost! The related data pack-

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ages are sent after, once the interference is over.

Following data is immediately updated when the re-send data is received :

- trip distance

- riding time

- average speed

- maximum speed

- odometer

Hence, your current data may change erratically after a interference = Update of your
computer.

After a battery change, a new coding is automatically generated in the transmit­ter. The computer must learn this new coding. Therefore, you have to activate the
manual transmitter search DIGI CONNECT RESET (3.1. Manual Transmitter Search
– DIGI CONNECT RESET)

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C1DS
C2DS
C3DS
C4DS

1.1 The VDO-USER-CARD

Welcome to the Club. With the purchase of this product, you have become a member of the
VDO-USER Club. The VDO-USER-CARD gives you three advantages:
A. The white boxes allow you to write down your personal wheel size settings, if you have

several bikes or if you use different tires.

B. The VDO-User-ID allows you access to the restricted VDO-User area on the VDO Home-

page www.vdocyclecomputer.com.
Here you can find many useful information and additional hints.

C. The quick-reference manual helps you if you have not used your computer for a while and

can’t remember how to use it.

1.2 Functions

Information-Functions C1DS, C2DS, C3DS, C4DS:

TRIPDISTANCE trip distance
ODO BIKE1/2 total odometer for bike 1/2
ODO TOTAL total odometer for bike 1+2
RIDE TIME trip ride timer

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AVG SPEED average speed

Information-Functions C2DS, C3DS, C4DS:

MAX SPEED maximum speed
STOPWATCH stop watch

Information-Functions C3DS, C4DS:

SUM RIDE TM1/2 total ride timer (bike 1 / bike 2)
TOT RIDE TM total ride time for bikes 1 + 2
NAVIGATOR second, programmable trip counter

Information-Functions C4DS:

TIMER 1/2 Timer 1 / Timer 2
COUNTDOWN countdown timer
FORECAST KM(MI) trip distance prediction (at countdown)
REMAIN KM(MI) trip distance remainder (at countdown)

Additional Functions C1DS, C2DS, C3DS, C4DS:
DIGI CONNECT RESET - Manual Transmitter Search

CLOCK time display in 12 or 24 h mode

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C2DS
C3DS
C4DS

comparison between actual and average speed by indicators
WS1/2 - 2 wheel sizes programmable for bike 1 + bike 2
7 languages selectable, full text display
Service-Interval-Indicator (wrench symbol)

Additional Function C2DS, C3DS, C4DS: Timing Indicator
Additional Function C4DS: Audible signal (beeper) for timing-functions

1.3 Optional features

The following genuine VDO parts are available at your Bike Shop

- set transmitter/magnet/handlebar mount

- cadence set

- stem mount

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C2DS
C3DS
C4DS

2.1 Installing the batteries in the digital transmitter and the computer >>> P02

Both, your VDO computer and your VDO transmitter are coming with a 3 V battery (type

2032).

A. First install the battery in the digital transmitter

Step 1. Place the battery into the transmitter housing, +pole face-up.
Step 2. Make sure the battery is not edged over.
Step 3. Check if the rubber washer is flatly positioned on the battery door.
Step 4. Place the battery door on the compartment, take a coin and twist it to the right until

detent (approx. 1/3 turn).

B. Install the battery in the computer immediatly after the installation of the battery
in the transmitter.

At the initial putting into operation, the computer is automatically trying to find the transmitter.
By this, the computer also learns the transmitters coding

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IMPORTANT: On inserting the battery into the transmitter, the coding of the digital
signals is automatically generated. The computer is only able to find the coded
signal at the initial putting into operation. After a battery change, a new coding is
generated in the transmitter. In this case, the computer won’t find the coded signal
and a manual transmitter search is required (DIGI CONNECT RESET) – see chapter

3.1.

After every start a green LED at the transmitter flashes for 20 sec. only The flashing
LED indicates a working transmitter.

TIP for battery change: VDO recommends an annual battery change. Buy a spare battery in
due time to avoid unwanted loss of data. When changing the battery, all basic settings are
reset to default values. Note your individual wheel sizes and accumulated mileages (odometer
WS 1 / odometer WS 2) for both bikes before you remove the battery.
Reprogram this data after the new battery has been installed.

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C2DS
C3DS
C4DS

2.2 Mounting transmitter and magnet >>> P03

important mounting instructions:

a) maximum distance transmitter – computer = 150 cm (59 in)
b) distance transmitter - magnet: 3 to max 10 mm (up to 0.04 in)
c) mount the transmitter on the fork leg, same side where you want the computer to be on the

handlebar. (not applicable for stem mounting with optional stem holder).

Step 1 Prefix the transmitter on the fork leg with cable ties (do not tighten yet)
Step 2 Put the magnet around a spoke, do not fix
Step 3 Direct the magnet to the marking on the transmitter at a distance of around 3 mm and

shut the clip-mechanism

Step 4 Align transmitter and magnet and tighten the transmitter’s cable ties. Clip off the cable

tie ends not needed.

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C2DS
C3DS
C4DS

C1DS
C2DS
C3DS
C4DS

2.3 Mounting the VDO any-size handlebar holder >>> P04

Step 1 Position the holder socket on the handlebar (stem optionally).
Step 2 Feed the fixing clamp through the slot below the holder socket, pass the clamp

around the handlebar (stem optionally) and tighten it with a little screw driver. Do not
overstress, the plastic screw might be damaged.

2.4 Twist-Click mounting of the computer >>> P05

The VDO Twist-Click-System securely connects the computer with the handlebar holder.
step 1 Hold the computer in the 10 O’clock position (approx. 45° to the left) and place it into

the socket.

step 2 turn the computer to the right “twist” until it engages in the socket.
step 3 for removal turn the computer to the left (do not press or yank)

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C4DS

2.5 The new 4-line VDO display

Indicator elements (Icons)

Service Indicator, TIMING Indicator, Indicator Bike 1/Bike 2 and measuring system (km or mi),
comparison of actual and average speed, Menu control indicator (flashes for further menu
options selectable)

Digit elements

Time (clock), Speed, Chosen display function

Text lines

Upper text line: full text description of the information displayed
or in set-up menu: description of set-up function
Lower text line: indicates the sub-menu to enter by pushing the
M-key or in set-up menu: indicates available set-up menus to be
Entered.

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Service Indicator

Timing Indicator
C2DS, C3DS, C4DS

Time (clock)

Variation / differ­ence actual speed
to average speed

Selected measuring unit

Indicator bike 1/2

Menu control indicator

Text line 1

Actual (current)
speed

Reading of the func­tion selected in text
element 1

Text line 2

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C4DS

2.6 The VDO EMC-operating system

EMC = Easy Menu Control

EMC eases operating the computer by a full text menu control well known from
most cellular phones. 4 keys combined with the 4-line display provide comfortable
and user-friendly operation.
Menu indicators will always show further menu options by flashing.

In fact, you do not need the manual any more form here. Your VDO computer leads you step
by step through all the menus.

Enjoy navigating!

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The 4 keys and their functions:

Menu navigation upwards
or in SET-mode (number flashes): increase number
Menu navigation downwards
or in SET-mode (number flashes): decrease number
choose/accept option displayed (enter next menu level)

(push once) cancel last entry / go back one menu level
(hold) return to main menu

2.7 Functions / menu structure

IMPORTANT: In information menu (IM1 to IM7, see below)
the lower text line indicates the entry to a sub-menu.
Within such a sub-menu the upper text line indicates the
chosen information while the lower text line may offer
available options (START/STOP/RESET).
IM = Information Menu • EM = Set- or sub-menu

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IM1. TRIPDISTANCE/SETTINGS

IM2. ODO TOTAL/MORE

IM3. NAVIGATOR/SELECT

IM4. „TIMING-Function“/START*

IM5. MAX SPEED

IM6. AVG SPEED/C4: MORE

IM7. RIDE TIME/C3/C4: MORE

IM2.1. ODO BIKE 1
IM2.2. ODO BIKE 2

EM2.1. NAVIGATOR/SET
EM2.2. NAVIGATOR/RESET

C3/C4: IM7.1. SUM RIDE TM1
C3/C4: IM7.2. SUM RIDE TM2

C4: IM6.1.** FORECAST KM
C4: IM6.2.** REMAIN KM

C3/C4: IM7.3. TOT RID TM

*Depending on selection in Set-up-Menu

** Only if COUNTDOWN has been selected

= See Set-up Menu at chapter…..

menu available for models:

all

all

all

all

C3/C4

C2/C3/C4

C2/C3/C4

2.7.1 Information Menus

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2.7.2 Set Menus

EM1. DATA/RESET

EM3. LANGUAGE/SELECT

EM2. DIGI CONNECT/RESET

EM4. WHEELSIZE/SET

EM5. ODOMETER/SET

EM6. CLOCK/SET

EM7. WHEELSIZE/SELECT

EM8. TIMING/SELECT

EM9. NAVIGATOR/SELECT

EM9.1. NAVIGATOR/SET
EM9.2. NAVIGATOR/RESET

EM1.1.

TOUR DATA/RESET

EM1.2. ODO TOTAL/RESET
C3/C4: EM1.3. TOT RID TM/RESET

EM8.1.1. TIMER 1/?SELECT?
EM8.1.2. TIMER 2/?SELECT?
EM8.1.3. TIMER 1+2/?SELECT?
EM8.1.4. COUNTDOWN/?SELECT?
EM8.1.4. STOPWATCH/?SELECT?

EM8.2.1. TIMER1/?SET?
EM8.2.2. TIMER2/?SET?
EM8.2.3. COUNTDOWN/?SET?

EM8.1. TIMING/?SELECT?

EM8.2. TIMING/?SET?

C4

C3/C4

all

all

all

all

all

all

all

menu available for models:

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>>> P06

C1DS
C2DS
C3DS
C4DS

General hint to read the following chapters:

In the following you will often see this icon. Whenever you see this

icon, use the UP/DOWN keys to find the relevant menu option and
accept it by pushing the M-key.

3. Initial operation, AC-(“Auto clear”)-button

After installing the battery, your VDO computer brings up an English main menu.
Select your language to begin with.

a c “TRIPDISTANCE / SETTINGS”
a c “LANGUAGE / SELECT”
a c choose your language

The computer then automatically returns to the main menu TRIPDISTANCE/SETTINGS
(in your selected language).

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C2DS
C3DS
C4DS

Should your computer not function properly after installing the battery or you want to reset it to
default values, push the AC-button on the rear of the housing.

3.1 Manual Transmitter Search – DIGI CONNECT RESET

After a battery change, a new coding is automatically generated in the transmitter. The
computer must learn this new coding. Therefore, you have to activate the manual transmitter
search DIGI CONNECT RESET:

a c call SETTINGS and accept
a c call DIGI CONNECT and accept

?RESET? appears in display
c accepts

Now, an additional check back secures that you really want to reset the digital coding of your

computer (?RESET? flashes), c accepts.

If you start riding or turn the front wheel now, the computer automatically learns the
transmitters new coding. This procedure may take a few seconds.

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C1DS
C2DS
C3DS
C4DS

4. Basic settings

Basic settings are settings crucial to data measuring and operating the computer. Such as

language, wheel size(s), clock.

WATCH OUT: Any SET procedure must be completed (menu question ?SET OK? gets

accepted by pushing c). Should a SET procedure not be completed, any data entered is not
stored.

4.1 Language selection

In case you want to change the language at any time, proceed as described under chapter 3.

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4.2 Measuring and setting the wheel size(s) >>>P07

In order for your VDO computer to precisely calculate speed and distance, you have to mea­sure the circumference of your wheels With an incorrect wheel size set, all related values like
speed, trip distance, odometer etc. come out false. To make the use of your VDO computers
possible on 2 bikes, i.e. Mountain Bike and Road Bike, you are able to set up 2 different wheel
sizes.

Measuring both wheel circumferences:
step 1 Place the front wheel valve perpendicular to the ground
step 2 Mark this spot on the ground for example with chalk
step 3 Turn the wheel forward for one full circle until the valve is

perpendicular to the ground again

step 4 Also mark this spot.
step 5 Measure the distance between the two spots (markings)

This is your wheel size.
step 6 Set-up your wheel size in your VDO computer as
described below.

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If you have selected the Metric system (KM) you have to enter your wheel size/s in millimeters.
If you have selected English system (MI) you have to enter your wheel size/s in inches.
TIP: Write down your wheel sizes on your VDO-User-Card for easy reference. The values
listed in the chart >>>P08 are approximate. Depending on the tire brand, it is possible that
these numbers deviate from your real tire circumference since height and tread pattern are
likely to be different.

Setting the wheel sizes :

a c “TRIPDISTANCE/SETTINGS”
a c “WHEELSIZE/SET”
a c “KMH-DISPLAY” or “ MPH-DISPLAY” to be selected

<<actual wheel size 1 flashes>>

a set wheel size 1 in [mm] or [in]
(Press up/down key briefly for 1 mm, keep pressing key for fast forward run)
c “?SET OK?” accept or return by pressing b and correct your entries. “WHEELSIZE 1 /

SET DONE” pops up briefly, to indicate data storage.

Your computer now wants you to set wheel size 2.

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If applicable, enter wheel size 2 as described above

If you don’t need to enter the second wheel size, hold the b key until the computer returns to
main menu TRIPDISTANCE/SETTINGS.

Watch out: Default settings for the wheel sizes are as follows: Bike 1 = 2155 mm and
Bike 2 = 2000 mm. In case you don’t set your individual wheel sizes, the computer
works with default values. Readings for speed therefore are likely to deviate signifi­cantly from the actual values.

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4.3 Setting the clock

a c “TRIPDISTANCE / SETTINGS”
a c “CLOCK / SET”
a c “CLOCK 24-H-DISPLAY” or “CLOCK 12-H-DISPLAY”

<<flashing numbers>> are ready to be set:

a set hours
c “?CONTINUE?” for minutes
a c set minutes
c “?SET OK?” accept (or b to return and correct entries)

Your VDO-Computer automatically returns to main menu TRIPDISTANCE/SETTINGS.

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C3DS
C4DS

4.4 Setting the odometers

You can set odometers anytime or after a battery change. Note the odometer readings for
bike 1 and 2 before changing the battery

a c “TRIPDISTANCE/SETTINGS”
a c “ODOMETER / SET”
a c “ODO BIKE 1 / SET” or “ODO BIKE 2 / SET”

<<flashing numbers>> are ready to be set

a set value
c “?NEXT DIGIT?”

After you have set the last number on the left = first of your value
c “?SET OK?” accept “SET DONE”

Your VDO-Computer automatically returns to main menu TRIPDISTANCE/SETTINGS.

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4.5 Changing wheel sizes from bike 1 to bike 2

If you have programmed 2 wheel sizes for 2 bikes you have to adjust your computer
accordingly prior to your trip.

a c „TRIPDISTANCE/SETTINGS“
a c „WHEELSIZE/SELECT“, accepted by c
a c „WHEELSIZE 1“ or „WHEELSIZE 2”
c accept / select

Change of wheel size is confirmed by WHEELSIZE 1-2 DONE.

WATCH OUT: Changing to the other wheel size automatically results in resetting / delet-

ing all data of your last tour (trip distance, ride time, average and maximum speed) of the
previous wheel size setting.

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4.6 Reset functions

To reset / delete certain or all tour data

a c “TRIPDISTANCE/SETTINGS”
a c “DATA / RESET”
a “TOUR DATA / RESET”

or “ODO TOTAL / RESET”
or “TOT RIDE TM / RESET” (only C3DS, C4DS)
c accept / select “RESET”

Safety check back: Are you sure you want to reset?

c accepts “?RESET?” and deletes
NOTE: Accepting the reset by pressing c deletes the respective data. This step can not be
made undone.

“RESET DONE” appears briefly and your VDO-Computer automatically returns to main menu
TRIPDISTANCE/SETTINGS.

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C2DS
C3DS
C4DS

Following data is deleted by these corresponding reset modes:
TOUR DATA RESET: trip distance, ride time, average speed, maximum speed.
ODO TOTAL RESET: odo total, km/mi bike 1, km/mi bike 2
TOT RID TM RESET: total ride time, ride time bike 1, ride time bike 2 (C3DS, C4DS)

5. Service-Interval-Indicator

Your VDO computer features a Service-Interval-Indicator for bike 1 and bike 2. Like the
indicator in some cars, the Service-Interval-Indicator reminds you to have your bike checked
and serviced in a shop.
When you reach 750 km/mi on one bike:

- The Service-Interval symbol (wrench) flashes in the display

- The information line displays “BIKE CHECK“

Now it is suggested to either service your bike yourself or take it to a pro shop of your choice
to have it checked.
Press any key. The text “BIKE CHECK“ will disappear again

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C4DS

After further 50 km/mi the Service-Interval-Indicator symbol (wrench) will also disappear.

6. Sleep-Mode

Your VDO-Computer features a sleep mode function to save battery power. During Sleep
Mode the major portion of your display is shut down to save battery power. Only the clock,
the Service-Interval-Indicator (if applicable) and the TIMER symbol (if activated) are displayed.

a. The computer will go into Sleep-Mode when no speed impulses have been processed for 5

minutes and no key has been pressed during that time.

b. Sleep-Mode is cancelled once speed impulses are processed (you start riding) or any key

is pressed.

ATTENTION:

At a break during your ride the receiver will be switched off after 30 minutes
(battery consumption). Before continuing your ride you need to switch on the Computer
again = press c-button

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C3DS

C1DS
C2DS
C3DS
C4DS

7. Cadence (optional)

Your VDO computer is prepared for cadence measuring. To make use of these functions,
you need to purchase the optional CADENCE KIT (Articlecode: 4402) at your Bike-Dealer.

Operating instructions for cadence functions are described in detail in the CADENCE
KIT’s extra manual.

Contents of the optional kit “CADENCE” (Articlecode: 4402):
Cadence transmitter and mounting parts, cadence-magnet, mounting parts

8. Stopwatch

Manual stop watch to measure riding time of certain trip sections.
Starting Stopwatch
Select STOPWATCH in your information display:

a “STOPWATCH /START”
c “START” / “STOP”

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C4DS

Indicator Symbol << >>

Resetting Stopwatch:

a STOPWATCH select the appropriate menu.
c Hold for 3 seconds

After 3 seconds the STOPWATCH is reset to zero.

9. NAVIGATOR functions

Your VDO computer features a NAVIGATOR function that makes it possible to follow route
(Road-Book) instructions. Road-books are trip maps outlining mileage values based on
certain landmarks.

Your VDO-Navigator is a further independent trip counter, it either counts forward or back­wards. Mileage can be set at any point of the trip. You might as well get in on a trip or adjust
your mileage in case you have gotten lost.

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Setting the NAVIGATOR

a c “NAVIGATOR / SELECT”
a c “NAVIGATOR / SET“
a c “FORWARD” or “BACKWARD“ to be selected

<<flashing numbers>> are ready to be set:

a enter / set
c “?NEXT DIGIT?” accept or return by b

continue with next digit or correct previous entry b
At the end of the set procedure you will be asked
c “?SET OK?” accept
“SET DONE” appears briefly and your VDO-Computer automatically returns to main
menu TRIPDISTANCE/SETTINGS.

Note: the NAVIGATOR is always counting, even if you don’t set it.

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C4DS

Reset NAVIGATOR to zero.

a c “NAVIGATOR / SELECT”
a c “NAVIGATOR / RESET”

Check back: “NAVIGATOR ?RESET?”
c accept
“RESET DONE” appears briefly and your VDO-Computer automatically returns to main menu
TRIPDISTANCE/SETTINGS.

10. Timing functions

Your VDO-Computer features 5 individual timing functions. With any of the functions selected
the TIMING indicator << >> is activated in the upper left part of the display.
Set-/measuring range for all timing functions:
0:00:00 h to 24:00:00 h

TIMER 1: You can program a time window, i.e. for interval training. TIMER 1 counts on from
zero. A single beep indicates the end of TIMER 1.

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TIMER 2: You can program another time window, i.e. for a break in your interval training
TIMER 2 counts on from zero. A double beep indicates the end of TIMER 2.

TIMER 1+2: With this TIMING-function selected, TIMER 1 and TIMER 2 time windows are
continuously cycled one after the other. A single beep indicates the end of TIMER 1, a double
beep indicates the end of TIMER 2. TIMER 1+2 is activated, until you stop TIMER 1+2 by
pressing the M-key

COUNTDOWN: You can program a time window from which is counted backwards. A single
beep indicates the end of the COUNTDOWN timer. Only with COUNTDOWN selected and
started you have access to additional functions MORE in AVG SPEED menu. See also 10.4.

STOPWATCH: manual stop watch to measure riding time of certain trip sections.

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C4DS

10.1 Selecting timing functions

a c “TRIPDISTANCE / SETTINGS
a c “TIMING / SELECT”
c “TIMING / ?SELECT?”

Note: By accepting “?SELECT?” either default setting STOPWATCH or last selected timing
function is displayed .

a “STOPWATCH” / “COUNTDOWN” / TIMER 1” / “TIMER 2” or “TIMER 1+2”
c SELECTION to be confirmed / accepted

“DONE” appears briefly and your VDO-Computer automatically returns to main menu
TRIPDISTANCE/SETTINGS. The TIMER function of your choice is then displayed in your
information menu IM4.
With TIMER or COUNTDOWN selected, you have to program your time window, otherwise
your information menu displays the hint “TIMER ERROR” or “COUNTDOWN ERROR”.

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10.2 TIMER/COUNTDOWN programming

While the STOPWATCH does not need any further presetting, for the TIMER and COUNT­DOWN functions the time windows have to be programmed in the first place

a c “TRIPDISTANCE / SETTINGS
a c “TIMING / SELECT”
a c “TIMING / ?SET?”
a “TIMER 1” or “TIMER 2” or „COUNTDOWN“
c accept / select

<<flashing numbers>> are ready to be set

a c hours a c minutes a c seconds
c „?SET OK?“ accept

“TIMER1/TIMER2/COUNTDOWN SET DONE” appears briefly and your VDO-Computer
automatically returns to main menu TRIPDISTANCE/SETTINGS.

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10.3 Timer/Countdown/Stopwatch start, stop and reset / Beep

Starting Timer/Countdown/Stopwatch
Select the timing-function of your choice in your information display:

a “TIMER 1 /START” or “TIMER 2/START” or “TIMER1+2/START” or
“COUNTDOWN /START” or “STOPWATCH /START”
c “START” / “STOP”

Resetting Timer/Countdown/Stopwatch
Timer and Countdown feature a “fast reset” function:

a TIMER1/TIMER2/TIMER1+2/COUNTDOWN/STOPWATCH select the appropriate menu.
c Hold for 3 seconds

After 3 seconds the TIMER is reset to zero or the COUNTDOWN is reset to the previously
programmed START time.

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Check back COUNTDOWN

With COUNTDOWN-time elapsed an automatic check back appears: ?RESET?.
If you accept this by pressing c, the previously programmed COUNTDOWN time is
displayed.
The COUNTDOWN is now ready to be started again.

10.4 Additional Countdown Functions

In COUNTDOWN mode you get to FORECAST KM/MI and REMAIN KM/MI by information
menu AVG SPEED:

a c “AVG SPEED/MORE”
a “FORECAST KM or MI”
b “REMAIN KM or MI”

Note: The forecasted km/mi reflect your computers projection for the distance you ac-

complish at the end of your countdown time. This information is determined by your actual
average speed during the countdown time period. Respective data is updated

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Malfunction Probable Cause Remedy / Repair

Partial text segments
in display (i.e. after
battery change

Computer-software is not
running smoothly after bat­tery change

Reset the software by
pressing the AC-button on
the rear housing

No speed reading in
display

Transmitter and magnet are
too far apart

Readjust position of trans­mitter and magnet

C1DS
C2DS
C3DS
C4DS

every 10 seconds. Remaining km/mi is your estiamted distance left in the remaining count­down time. Here also, respective data is updated every 10 seconds. As long as you have
not reset your COUNTDOWN by ?RESET?, you are able to review the projected FORECAST
KM/MI of your last COUNTDOWN by the “FORECAST KM/MI” menu option.

11. Troubleshooting

Here’s a listing of possible malfunctions, the probable causes and suggested solutions.

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C1DS
C2DS
C3DS
C4DS

No speed reading
in display

Transmitter battery has been
changed

Activate manual transmitter search
(DIGI CONNECT RESET) see
chapter 3.1

No speed reading
in display

Wheel size is not correctly
set up = Wheel size is ZERO

Program your wheel size

Display fades Battery is weak Check battery, and replace

eventually

Display fades Temperatures below 5°

C (41° F) make your LCD
display fade

Higher temperatures will m ake your
display work properly

12. Warranty disclaimer

VDO Cycle Parts warrants your VDO-Computer for 5 years from date of purchase. This war-

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ranty covers defects in material and workmanship. Defects on cables, senders, transmitters
and mounting materials resulting from normal wear and tear, improper care, accidents, abuse
or alteration are not covered by our warranty. Opening the computer housing (except for the
battery door) is considered abuse, thus not covered by our 5 year warranty.

Please keep your sales receipt to prove that your computer is covered under the war­ranty in case of legitimate complaints.

In case of legitimate complaints you are entitled to have your computer either repaired or
replaced with a comparable model. Due t possible model changes, your model might have
been discontinued.
In the event that you should have a complaint, please first contact the retailer where you pur­chased your VDO computer. If the retailer is unable to help, you can return your computer to:

Cycle Parts GmbH, Große Ahlmühle 33, D-76865 Rohrbach.

In case of technical queries, please contact our customer-service-hotline: [phone].
Further technical information is available on our website: http://www.vdocyclecomputer.com
Technical specifications of our computers are subject to change without notice.

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C1DS
C2DS
C3DS
C4DS

13. Technical Specifications

Computer: approx. 45 x 52 x 16 mm, weight 45 g
Handlebar holder: weight 15 g
Transmitter: weight20 g
Battery: 3V, Type 2032 (Computer), 3V Type 2032 (Transmitter)
Battery life: 300 hours of use, approx. 6000 km (3940 mi) only speedtransmitter use

250 hours of use, approx. 5000 km (3106 mi) speed plus cadence-transmitter use.
Digital speed transmitter: 600 h

Operating temperature of LCD display: -15 °C to +60 °C (5° F to 140° F)
Speed reading range: at wheel size 2155 mm (84.8 in)

min 2.5 km/h (1.55 mi) / max 120 km/h (74 mi)

Riding Time Measuring Range: up to 23:59:59 HH:MM:SS
Stop Watch Measuring Range (only C2DS, C3DS, C4DS): up to 23:59:59 HH:MM:SS
Trip Distance Counter Measuring Range: up to 999.99 km or mi
NAVIGATOR Measuring Range (only C3DS, C4DS): up to 999.99 km or mi
Total odometer either Bike 1 or 2 Measuring Range: Up to 99.999 km or mi
Total Odometer measuring Range: up to 199.999 km or mi

Wheel size Set Range: 100 mm (3.9 in) minimum / 3999 mm (157.4 in) maximum