Cateye MSC-2Dx user manual Setting the Main Unit, Setting Wheel Circumference

SETTING THE MAIN UNIT

Setting Wheel Circumference

L

MODE

Switching the speed scale

SET/AT

The wheel circumference setting screen

MODE

You can input two kinds of wheel circumferences into MSC- 2Dx, so it can be quickly switched between two bikes.

1. Determine the wheel circumference.

Refer to the Tire Size Reference Table below to determine your tire's circumference. For the most accurate setting you can perform a “wheel roll-out”. To do this pump your tires up to normal pressure. On a level area place the valve stem perpendicular to the ground and mark the spot. Get on the bike and with your weight bearing on the tires roll one complete wheel length forward. Mark where the valve stem is perpendicular to the ground again. Measure the distance between the two. This number in millimeters is the most accurate calibration number you can put into the computer.

Reference: The tire size is shown on the side of your tire.

2. Push AC button.

The screen will illuminate for one second and then "km/h" or "mph" will flash. Push MODE button to switch between "km/h" and "mph".

3. Push SET/AT button.

The speed scale is now set. The wheel circumference set up screen now appears. The wheel circumference icon and the preset wheel circumference (2096) flash.

4. Change the value.

Setting Values Cross Reference Table

Tire Size	L(mm)
24 x 1	1753
24 x 3/4 Tubular	1785
24 x 1-1/8 Tubular	1795
24 x 1-1/4	1905
24 x 1.75	1890
24 x 2.00	1925
24 x 2.125	1965
26 x 1(559mm)	1913
26 x 1(650C)	1952
26 x 1.25	1953
26 x 1-1/8 Tubular	1970
26 x 1-3/8	2068
26 x 1-1/2	2100
26 x 1.40	2005
26 x 1.50	1985
26 x 1.75	2023
26 x 1.95	2050
26 x 2.00	2055
26 x 2.1	2068
26 x 2.125	2070
26 x 2.35	2083
27 x 1	2145
27 x 1-1/8	2155
27 x 1-1/4	2161
27 x 1-3/8	2169
650 x 35A	2090
650 x 38A	2125
650 x 38B	2105
700 x 18C	2070

Increase the number	• Push MODE button to increase the number.
LAP	• Push LAP button to decrease the number.
Decrease the number	Hold down the button for rapid advancement.
	Reference:

700 x 19C	2090
700 x 20C	2086
700 x 23C	2096
700 x 25C	2105
700 x 28C	2136
700 x 30C	2170

SET/AT Completes the wheel circumference

setting

You can easily change a value for another wheel circumfer-

ence at this stage.

Push MODE and LT buttons simultaneously to switch to and change the value by the same procedure de-

scribed in 4.

5. Push SET/AT button.

700 x 32C	2155
700C Tubular	2130
700 x 35C	2168
700 x 38C	2180
700 x 44C	2224

The wheel circumference setting is completed. Elapsed Time TM function appears.

MSC-2Dx 12