Veloset JS-204A User manual



Remark: This unit just be used as normal sporting

exercise, can't be used as medical

indicator.

¢PRODUCT GUIDE (FIG.A)

1

Wireless Cycle Computer

Wireless cycle computer with

wireless heart rate monitor

Wireless cycle computer JS-204

JS-212

JS-212A

JS-204A FIG. A

2 3

3DUW,3DUWV

3DUW,0DJQHW Part III: Transmitting Parts

Sensor rubber slip

(short)

Magnet

VS-212

VS-212A

VS-204

VS-204A

Bicycle computer

nylon cord

(2pcs)

Bracket

Accessories

Part IV: Chest Belt(For JS-204A/JS-212A)

rubber slip

nylon cord

(2pcs)

FIG.B FIG.C

¢INSTALLATION

Part I How to install the computer

¥How to install the battery of computer

1.How to install the battery of 9S-204/9S-204A

Wrest the 4 screws on the back of computer, remove

the back case and put the battery as the Fig.B. Seal

the back case, and install the screws tightly.

2.How to install the battery of JS-212/JS-212A

Using a coin or other tools to loose the battery cover,

put the battery as the Fig.C. Then close the cover.

FIG.E

buckle

handle

pull

in

push

out

4

¥How to install the bracket

Add rubber slips to fix the by two nylon

cords to the bicycle gripe. (FIG.D)

bracket

¥Computer installation

Slide the computer into

bracket through the slot

as FIG.E. Press the

handle of buckle tightly

until the computer won't

pull off. When you want

to remove the computer

out of bracket, just press

the handle of buckle and

push the computer out

through the slot.

FIG.D

nylon

cords

computer

bracket rubber slip

bicycle

gripe

Part III Magnet installation

Fasten the magnet with screw to the spoke of the

wheel. (FIG.F)

5

FIG.F

FIG.G

Part II SENSOR INSTALLATION

Sensor battery replacement

Wrest the 4 screws on the back of sensor, remove the

back case and put(or

replace) a battery A23

12V. Seal the back case,

and install screws tightly.

(FIG.G)

Sensor replacement

Add rubber slips to fix the

sensor by two nylon

cords to the required

position. (FIG.H)

FIG. J FIG. K

6 7

Max 80cm

Max 30°

FIG. H

NOTE：

●The distance between magnet and sensor

should be no more than 5mm (Fig.I).

●The sensor should face the computer, the

distance between sensor and computer

shoubld be no more than 80cm (FIG.J), the

angle should be no more than 30°(FIG.K).

FIG. I

Angle adjustment

Max5mm

¢FUNCTIONS

Please test the computer to see if it works well after

installation. If necessary, adjust the position or angle of

the computer and senor.

HOW TO INSTALL AND REPLACE THE

BELT BATTERY ( FOR MODEL JS-204A/

JS-212A)

Battery installation and replacement (Fig.L)

¢

8

FIG.L

conductive pad

JS-212 JS-212AJS-204

DST

Display

JS-204A

Distance

SPD

Functions

√

Clock

Speed

9

¢BUTTONS

1.MODE

1)Functions switch:Speed/Clock/Distance/Ridind

t ime/ Temperature/Pulse/Average speed/

Max.speed/ ODO/ Scan

RTM √

×

√

×

√

×

√

×

√

×

√

TEMP

AVS

RES

PULSE

MXS

ODO

√√√√

Riding time

Average speed

Relative speed

Max. speed

ODO

Scan

Auto-off

Dynamic speed

Pulse

Anti-interference

Backlight

Temperature

√√√

JS-212 JS-212AJS-204

Display

JS-204A

Functions

NOTE: ”means with this function, means without

this function.

“√“×”

Circumference = Diameter x 25.4 x 3.1416

2.Wheel size in MM

Circumference = Diameter x 3.1416

Second method: Refer to the below data according

to the dimension marked in the

wheel.

2)Function confirmation: metric system/

i m p e r i a l s y s t e m , w h e e l

circumference size, clock setting

2.SET

1)RESET: Reset Distance/Riding time/ Average

speed/Max.speed

2)To set values：In SET mode, press this

button to set values.

3.Back light(JS-212)

The back light button is in

the case back. It will light

for around 5 seconds by

every pressing. (FIG.M)

HOW TO MEASURE THE BIKE

CIRCUMFERENCE

Use tapeline to measure the diameter of front

bike wheel. Or, you can calculate the bike

circumference according to the wheel size

marked in bike instruction manual.

1.Wheel size in INCH

¢

10 11

FIG.M

Back light

16X1.75X2

20X1.75X2

24X1 3/8 A

24X1.75X2

26X1

26X1.5

26X1.6

26X1.75X2

26X1.9

26X2.00

26X2.125

26X1 3/8

47-305

47-406

37-540

47-507

23-571

40-559

44-559

47-559

50-559

54-559

57-559

37-590

1272

1590

1948

1907

1973

2026

2051

2072

2089

2114

2133

2105

Wheel Cir.(mm)

Dimension marked in the wheel

Wheel Cir.(mm)

26X1 3/8X1 1/2

26X3/4

27X1 1/4

27X1 1/4 Fifty

28X1.5

28X1.75

28X1 1/2

28X1 3/8X1 5/8

700X1 8C

700X20C

700X23C

700X25C

700X28C

700X32C

700X35C

700X40C

20-571

32-630

28-630

40-622

47-622

40-635

37-622

18-622

20-622

23-622

25-622

28-622

32-622

37-622

40-622

37-584

1954

2199

2174

2224

2268

2265

2205

2102

2114

2133

2146

2149

2174

2205

2224

2086

Dimension marked in the wheel

12 13

Third method: Do as below FIG.N to get the bike

circumference.

¢SPEED UNIT, CIRCUMFERENCE,

CLOCK SETTING

1.Replace the battery or press SET and MODE

together for 2 seconds, KM/H will flash and enter

into setting speed unit.

2.Press and hold SET, switch between "KM/H"

and "M/H".Press MODE to confirm and exit.

Then proceed to bike circumference setting.

3."2074" will display and the last figure "4" will

flash, press SET to select value and press

MODE to confirm and exit. Then proceed to

next figure setting, do the same as above. After

finish all figure setting, press MODE to confirm

and proceed to CLOCK setting.

FIG.N

CIRCUMFERENCE

14

¢HOW TO USE THE BICYCLE COMPUTER

Per the above requirements to install all the parts,

and set the below data, then you can use the

bicycle computer.

1.Reset previous value to zero before each

FIG.O

SET+MODE

2S

MODE for changing

from low to high

MODE for changing

from hour to minute

KM/H MODE MODE

MODE MODE

KM/H

2074

KM/H

SPD

KM/H

Set speed unit Set circumference

12Hr/24Hr

Set clock

4.Do the same as above, press SET to select

value and press MODE to confirm and proceed

to next. (FIG.O)

Note: ●The bike circumference unit is mm.

●When in 12H format, PM is for afternoon. If

no PM, it is for morning time.

measurement. When the speed is zero(except

SCAN mode), hold SET for 2 seconds to reset the

value of DST(distance), RTM(riding time),

AVS(average speed), RES(relative speed),

MXS(max. speed), and enter SCAN mode.

2.The measurement begins once riding on the

bicycle. If the computer receive no signal during

riding, the " " in the display will not flash. Stop

riding and check if the magnet place well, if the

sensor got enough power.

3.Press MODE to select the display mode or SCAN

mode. Each display will be changed in order each

4 seconds when in SCAN mode.

4.The computer will turn off automatically if there is

no operation or signal over 8 minutes, and all the

memory will be kept. You can press any button to

turn on the computer to receive the signal again.

HOW TO WEAR THE CHEST BELT

(FOR MODEL JS-204A/JS-212A)

In order to get correct heart rate signal, you need to

properly wear the chest belt (FIG.O). The chest belt

will transfer the data to the bicycle computer .

1.Wet the conductive pads on the underside of the

transmitter with water, sweat or a conductive gel to

¢

15

FIG.Q

17

computer) will start transmitting and receiving

signal once batteries are in place. Both units

should be worn or mounted within an effective

distance of 80 centimeters (31inches). If the

signal have become unsteady,

A. Shorten the distance between the transmitter

and receiver.

B. Re-adjust the position of the transmitter.

C. Check the batteries. Replace them when necessary.

HEART RATE MEASUREMENT (FOR

MODEL JS-204A/JS-212A)

Press MODE to pulse display, if“ ” flash in

right corner of the LCD.

The computer is well

receiving the pulse

signal and will show your

heart rate value in a

short time, see FIG.Q.

Note: ●

●

¢

If you wear the

heart pacemaker or any other medical

equipment, please do not measure

heart rate.

Please do not measure heart rate near

FIG.P

ensure a solid contact.

2.Strap the belt across the chest. Adjust the strap until

the conductive pads sits snugly below the pectoral

muscles for an accurate heart rate signal.

Hints: ●The position of the transmitter affects

its performance. Move the

transmitter along the strap for the

best transmission. Avoid areas with

dense chest hair.

●In dry, cold climates, it takes the

transmitter a while to function

steadily. This is normal as the

conductive pads need a film of sweat

to improve contact with the skin.

EFFECTIVE RANGE

The transmitter in the strap and receiver(bicycle

16

computer, mobile etc generate the

electromagnetic signal, because the

electromagnetic signal will cause the

inaccurate heart rate measured.

¢HOW TO READ EACH DISPLAY

1.As shown in FIG. R:

i.Upper line shows

that your current

riding speed is

20.2km/h.

ii.KM means you are

in metric system and

all the speed and

distance will be

represented in metric.

iii.Lower line shows the clock.

iv.Icon "▲" or "▼" flashing shows that your

current speed is higher or lower than the

average speed.

v." " flashing means to receive the signal.

2.Press MODE and switch to the display as FIG.S:

i.Upper line shows that your current riding

speed is 20.2km/h.

ii.Lower line shows that your riding distance is

3.Press MODE again

and switch to the

display as FIG.T:

i.Upper line shows

your current riding

speed.

ii.Lower line shows

your riding time.

iii.It will stop counting

automatically if there

is no signal received

over 6 seconds.

4 . P r e s s M O D E a n d

switch to the display as

FIG.U. The upper line

shows your current

speed, and the lower line shows your current

pulse rate. (JS-204A/JS-212A)

5.Press MODE again

and switch to the

display as FIG.V:

I.Upper line shows

your current riding

speed.

ii.Lower line shows that

the temperature where

19

FIG.R

KM/H

SPD

18

FIG.S

FIG.T

FIG.U

KM/H

SPD

DST

KM/H

SPD

RTM

you are is 24°C.

iii.Press SET to see the

temperature in °F.

6.Press MODE again and

switch to the display as

FIG.W:

i.Dynamic speed

indicator shows the instantaneous speed

ii.AVS shows the average speed from exercise

start to where you are is 10.2km/h.

iii.Lower line RES

shows the relative

speed between

average speed and

instantaneous speed

is 10.0km/h. In that

case, your current

speed is faster

10.0km/h than the

average speed. If the instantaneous speed is

lower than average speed, RES will show

minus. (JS-204/JS-212)

Note: After cycling for more than 9H59M59S

(the max time for memory ), the average speed

KM/H

SPD

TEMP

20

FIG.W

FIG.V

will display incorrectly. Please clear both

exercise time and distance to zero to get a

correct value of the average speed.

7.Press MODE again and switch to the display as

FIG.X:

i.MXS shows the fastest speed during riding is

30.5km/h.

ii.ODO shows the total

distance from replacing

the battery.

iii.The ODO value could

not be reset to zero via

pressing SET button,

but holding MODE and

SET same time for 2

seconds.

■ NOTE

1.The bicycle computer is water-resistance

structure and could be used in rainy days. Be

careful not to use it under water.

2.The battery for the sensor and computer can be

used for 1 year if use for 2 hours everyday. It is

21

FIG.X

22 23

necessary to replace battery when the received

distance is shorter than 60mm.

3.The maximum space between bicycle computer

and sensor should be 90cm, and the angle is

not over 30°. The distance between magnet

and sensor should be no more than 5 mm.

4.Avoid draining battery when you do not use the

computer, it is recommended to keep the

magnet away from the sensor over 5mm.

5.Please do not use the product near the area

where microwave oven, TV, computer, mobile

etc. generate the electromagnetic signal,

because the electromagnetic signal will cause

the inaccurate readout.

■ TROUBLE SHOOTING GUIDE

Problem Cause Solution

Re-install the computer

Re-install the battery

correct or replace the

new battery

No power of sensor

or computer

The computer

can not receive

any signal

Display inaccurate

speed and distance

Incorrect setting of

wheel circumference

Re-set the circumference

away from that

interfering signal

Faulty speed

display

other strong signals

interfering

The chest belt is

too far from the

computer.

Incorrect wear of

chest belt

No power of chest

belt

Keep the distance between

the chest belt and computer

within 80cm.

Wear the chest belt per the

requirements in the manual.

Replace the new battery

No heart rate value

display when

monitor heart rate

Incorrect computer

installation position

Veloset JS-204A, JS-212A User manual

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