SunDING SD-548B - User Manual

Sunding Bicycle Computer
SD-548B (14Functions)
FUNCTIONS
- SPD CURRENT SPEED
- ODO ODOMETER （0.001～99999km/m)
- DST TRIP DISTANCE
- MXS MAXIMUM SPEED
- AVS AVERAGE SPEED
- TM ELAPSED TIME .
- CLK CLOCK (12H/24H)
- SCAN
- “+” “－” COMPARATOR
- SETTING SPEED SCALE（km/h,m/h）
- SETTING TYRE CIRCUMFERENCE : (0mm ～
9999mm)
- SETTING THE LAST VALUE OF
ODOMETER/ODO
- FREEZE FRAME MEMORY
- AUTO ON/OFF
Computer Battery Installation
Remove the battery cover from the bottom of the computer
by using a flat blade screwdriver, install an AG13 battery
with the positive (+) pole facing the battery cover and
replace the cover. Should the LCD show irregular figures,
take out the battery and re-install it.
Speedometer Sensor
Attach the speedometer sensor bracket to the left fork blade,
using the shims to adjust the diameter, and using the cable
ties (show below) to tie it with the fork. Position the sensor
and magnet as show; make sure that the arc of the magnet
intersects the alignment mark on the sensor with 1mm
clearance .
Mounting Shoe
Attach the mounting shoe
with the cable ties to the
handlebar, adjust the
mounting shoe on the
handlebar with the shims to
hold its position .
Sensor Wiring
Route the sensor wire up the fork
blade, using cable ties to secure it
at the bottom and crown to avoid it
hinder the movement of the front
wheel.
Computer
Attach the computer to the mounting shoe by sliding the
unit until it snaps firmly into its postion. To remove it, press
the button on it in the opposite direction.
To check for proper speed function and sensor alignment,
spin the front wheel with computer in speed mode. Adjust
the position of sensor and magnet when there is no or weak
reaction.
Wheel Size Input
‘2060’ appears on the screen when the battery has been
installed, with one figure flashing, choose the correct wheel
circumference from the table below. Press RIGHT button to
advance digits as needed and LEFT button to confirm and
advance. (The circumference ranges 0mm～9999mm),press
LEFT button to enter KM/M mode.
Setting（
（（
（km/h）
））
）/（
（（
（m/h）
））
）
Press the RIGHT button to choose km/h
or m/h. Press the LEFT button to enter
CLOCK mode.
CLK Mode(12H/24H)
In CLOCK Mode, press the LEFT button
for 3 seconds to enter 12/24H selection.
Re-press the LEFT button for 12/24
exchanging. Press the RIGHT button to
enter Hour setting mode, when the figure
indicating HOUR start to flash, press the
LEFT button to adjust it.
Continue to press the RIGHT button to enter Minute setting
mode, when the figure indicating MINUTE start to flash,
press the LEFT button to adjust it and RIGHT button to
confirm, re-press RIGHT button to enter ODO mode.
Setting the Last value of Odometer
In ODO mode, press the LEFT
button for 2 seconds to set the ODO
value, its initial value is 0000.0.
when one figure flashing, press
RIGHT button to adjust it and LEFT
button to confirm it, and start to set the next
figure.(after re-install the battery, latest value can
be inputted according to the value exists before the
battery is re-installed).
Reset of Mileage Parameter
In ODO mode, Press and hold both RIGHT and LEFT
button simultaneously for 3 seconds to clear the
circumference value and cancel (km/m) setting. The user
need to reset the tyre circumference, and (km/m), the
original ODO value and CLOCK will remain unaffected.
Speedometer
Speed is shown all the time on the screen, its maximum
reading is 99.9km/h(m/h), and it is accurate to +/- 0.1km/h
(m/h).
Speed Comparator
During riding , ‘+’and ‘-’ indicates the current speed is
higher or lower than average speed(AVS) .
Odometer
In ODO mode , the total distance is
indicated on the screen, its mileage range
is 0.001～99999km(m). The display will
be back to 0 when value exceeds its
maximum limit, press the RIGHT button to enter DST
mode.
Trip Distance (DST)
In DST mode, the distance for one trip is
indicated on the bottom line. DST
ranges from 0～99999km(m), when the
value exceed the range limit, it restarts from
0 automatically. Both the time and the
distance records will be cleared when the time of one trip
exceed the range limited.
press the LEFT button for 5 seconds, the computer will
clear the records of DST,MXS,AVS,TM to 0.
Press the RIGHT button to enter MXS mode.
Maximum Speed (MXS)
In MXS mode, maximum speed is
indicated on the bottom line. Press the
LEFT button for 5 seconds to clear the
records of, MXS,DST,AVS,TM to 0.
Press the RIGHT button to enter AVS mode.
Average Speed
In AVS mode, average speed is indicated
on the bottom line. Press the LEFT button
for 5 seconds to clear the records of
AVS,DST,MXS,TM to 0.
Press RIGHT button to enter TM mode.
Trip Time
In TM mode, trip time is indicated on the
bottom line. TM ranges 0 :00 :00 ～
99 :59 :59. It will be back to 0 when
value exceed the limits.
Press the LEFT button for 5 seconds to clear the records of
TM, DST, MXS and AVS to 0.
Press the RIGHT button to enter SCAN mode.
SCAN
In Scan mode , DST, MXS, AVS and TM
mode are indicated in turn every 4
seconds.
Press the RIGHT button to enter CLOCK
Mode.
Sleep Mode
If no signal has been inputted for 300 seconds, computer
will enter into Sleep Mode,and CLK value remains. It will
turn back to the former mode with all the data collected then
when any signal is inputted or any button is pressed.
FREEZE FRAME MEMORY
Press the LEFT button in any time will enter into freeze
frame memory mode. Flashing TM data will appear on the
screen. Press the RIGHT button to view the records of DST,
MXS,AVS,TM.
Press the LEFT button to end it.
Buttons Instruction
Press the RIGHT button to choose any mode below :
ODO, DST, MXS, AVS, TM, SCAN（DST、MXS、AVS、
TM） and CLOCK. It’s unnecessary to press the LEFT
button except choosing the Freeze frame Memory mode.
In Freeze Frame Momery mode, press the RIGHT button,
several data will display, re-press LEFT button to turn back
to other modes.
Malfunctions and Problems
Malfunctions Problems
No speedometer Improper magnet/sensor alignment
Inaccurate value is
indicated
Improper input, such as wheel
circumference.
Slow display
respon se
Temperature exceeds operating
limits(0℃～55℃).
Black display
Temperature too high, or put in
direct sunlight for too long time.
Need back to shadow place for a
period.
Weak display Poor battery contact or dead battery.
Display shows
Irregular figures
Take out battery and reinstall it after
10 seconds.
Accessories
TIRE SIZE
CIRC
TIRE SIZE
CIRC
700c x 38mm 2180 26’’ x 2.25’’ 2115
700c x 35mm 2168 26’’ x 2.1’’ 2095
700c x 32mm 2155 26’’ x 2.0’’ 2074
700c x 30mm 2145 26’’ x 1.9’’/1.95’’ 2055
700c x 28mm 2136 26’’ x 1.75’’ 2035
700c x 25mm 2124 26’’ x 1.5’’ 1985
700c x 23mm 2105 26’’ x 1.25’’ 1953
700c x 20mm 2074 26’’ x 1.0’’ 1913
700cTubulari 2130 24’’ x 1.9’’/1.95’’ 1916
650c x 23mm 1990 20’’ x 1-1/4’’ 1618
650c x 20mm 1945 16’’ x 2.0’’ 1253
27’’ x 1-1/4’’ 2161 16’’ x 1.95’’ 1257
27’’ x 1-1/8’’ 2155 16’’ x 1.5’’ 1206
26’’ x 2.3’’ 2135

Summary

Sunding Bicycle Computer Functions

Computer Installation and Setup

Computer Battery Installation

Guide on how to install the computer's battery using a flat blade screwdriver and an AG13 battery.

Speedometer Sensor Installation

Instructions for attaching the speedometer sensor bracket to the fork blade and aligning the magnet.

Mounting Shoe Attachment

Steps for attaching the mounting shoe to the handlebar using cable ties and shims.

Sensor Wiring Procedure

Guidance on routing and securing the sensor wire up the fork blade.

Computer Attachment

Instructions on how to attach the computer unit to the mounting shoe.

Wheel Size Input Configuration

Guide to inputting the correct wheel circumference from a provided table.

Speed Unit Setting

Instructions to set the speed unit to km/h or m/h.

Clock Mode Configuration

Steps to set the clock to 12H/24H format and adjust hour/minute.

Odometer Initial Value Setting

Procedure for setting the last value of the odometer.

Computer Operations and Modes

Resetting Mileage Parameters

How to clear circumference and km/m settings, retaining ODO and CLOCK.

Speedometer Display

Information on current speed display, range, and accuracy.

Speed Comparator Function

Explanation of '+' and '-' indicators relative to average speed.

Odometer Mode

Details on displaying total distance and its mileage range.

Trip Distance (DST) Mode

Information on displaying trip distance and automatic reset.

Maximum Speed (MXS) Mode

How to view and clear the maximum speed records.

Average Speed (AVS) Mode

How to view and clear average speed records.

Trip Time (TM) Mode

Details on displaying trip time and its range.

Scan Mode Operation

How the computer cycles through DST, MXS, AVS, and TM modes.

Sleep Mode Functionality

Explanation of automatic sleep mode entry and reactivation.

Freeze Frame Memory

Instructions on entering and viewing freeze frame memory.

Additional Information

Buttons Instruction

Guide on using the computer's buttons for mode selection and operations.

Malfunctions and Problems

Troubleshooting guide for common issues and their solutions.

Included Accessories

List of accessories provided with the bicycle computer.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The Sunding Bicycle Computer SD-548B is a 14-function device designed to track various cycling metrics.

Function Description

The computer offers a comprehensive set of functions to monitor your ride:

• SPD (Current Speed): Displays your real-time speed.
• ODO (Odometer): Tracks the total distance covered, ranging from 0.001 to 99999 km/m.
• DST (Trip Distance): Measures the distance of a single trip.
• MXS (Maximum Speed): Records the highest speed achieved during a ride.
• AVS (Average Speed): Calculates the average speed of your trip.
• TM (Elapsed Time): Shows the duration of your ride.
• CLK (Clock): Displays the current time in either 12H or 24H format.
• SCAN: Cycles through DST, MXS, AVS, and TM modes every 4 seconds.
• "+" "-" Comparator: Indicates whether your current speed is higher or lower than your average speed.
• Setting Speed Scale: Allows you to choose between km/h and m/h units.
• Setting Tyre Circumference: Enables precise calibration by setting the wheel's circumference (0mm to 9999mm).
• Setting the Last Value of Odometer/ODO: Allows you to input a previous odometer reading, useful after battery replacement.
• Freeze Frame Memory: Stores trip data (TM, DST, MXS, AVS) at a specific moment.
• Auto ON/OFF: The device automatically turns on and off to conserve battery.

Important Technical Specifications

• Odometer Range: 0.001 to 99999 km/m.
• Trip Distance Range: 0 to 99999 km/m.
• Maximum Speed Reading: 99.9 km/h (m/h).
• Speed Accuracy: +/- 0.1 km/h (m/h).
• Trip Time Range: 0:00:00 to 99:59:59.
• Operating Temperature: 0°C to 55°C.
• Battery Type: AG13 (1.5V).

Usage Features

Computer Battery Installation: To install the battery, remove the battery cover from the bottom of the computer using a flat blade screwdriver. Insert an AG13 battery with the positive (+) pole facing the battery cover. If the LCD shows irregular figures, remove and re-install the battery.

Speedometer Sensor Installation: Attach the speedometer sensor bracket to the left fork blade using shims to adjust the diameter and cable ties to secure it. Position the sensor and magnet so that the magnet's arc intersects the alignment mark on the sensor with 1mm clearance.

Mounting Shoe Installation: Attach the mounting shoe to the handlebar using cable ties. Adjust the shoe on the handlebar with shims to hold its position.

Sensor Wiring: Route the sensor wire up the fork blade, securing it with cable ties at the bottom and crown to prevent it from hindering front wheel movement.

Computer Attachment: Slide the computer onto the mounting shoe until it snaps firmly into position. To remove, press the button on it in the opposite direction. To check for proper speed function, spin the front wheel with the computer in speed mode and adjust the sensor and magnet if there's no or weak reaction.

Wheel Size Input: When the battery is installed, '2060' appears with one figure flashing. Use the provided table to find the correct wheel circumference. Press the RIGHT button to advance digits and the LEFT button to confirm. The circumference range is 0mm to 9999mm. After confirmation, press the LEFT button to enter KM/M mode.

Setting (km/h)/(m/h): In this mode, press the RIGHT button to choose between km/h or m/h. Press the LEFT button to enter CLOCK mode.

CLK Mode (12H/24H): Press the LEFT button for 3 seconds to enter 12/24H selection. Re-press the LEFT button to toggle between 12/24H. Press the RIGHT button to enter Hour setting mode; when the hour figure flashes, press the LEFT button to adjust it. Continue pressing the RIGHT button to enter Minute setting mode; when the minute figure flashes, press the LEFT button to adjust it and the RIGHT button to confirm. Re-press the RIGHT button to enter ODO mode.

Setting the Last Value of Odometer: In ODO mode, press the LEFT button for 2 seconds to set the ODO value (initial value is 0000.0). When a figure flashes, press the RIGHT button to adjust it and the LEFT button to confirm, then proceed to set the next figure. This allows you to input the latest odometer value if the battery was re-installed.

Reset of Mileage Parameter: In ODO mode, press and hold both RIGHT and LEFT buttons simultaneously for 3 seconds to clear the circumference value and cancel (km/m) setting. You will then need to reset the tyre circumference and (km/m). The original ODO value and CLOCK will remain unaffected.

Speed Comparator: During riding, a '+' or '-' indicator shows if your current speed is higher or lower than your average speed.

Odometer (ODO): The total distance is displayed. When the value exceeds 99999 km/m, it resets to 0. Press the RIGHT button to enter DST mode.

Trip Distance (DST): The distance for one trip is displayed on the bottom line. When the value exceeds 99999 km/m, it resets to 0. Both time and distance records are cleared if the trip time exceeds its limit. Press the LEFT button for 5 seconds to clear DST, MXS, AVS, and TM records to 0. Press the RIGHT button to enter MXS mode.

Maximum Speed (MXS): The maximum speed is displayed on the bottom line. Press the LEFT button for 5 seconds to clear MXS, DST, AVS, and TM records to 0. Press the RIGHT button to enter AVS mode.

Average Speed (AVS): The average speed is displayed on the bottom line. Press the LEFT button for 5 seconds to clear AVS, DST, MXS, and TM records to 0. Press the RIGHT button to enter TM mode.

Trip Time (TM): The trip time is displayed on the bottom line. When the value exceeds 99:59:59, it resets to 0. Press the LEFT button for 5 seconds to clear TM, DST, MXS, and AVS records to 0. Press the RIGHT button to enter SCAN mode.

SCAN Mode: DST, MXS, AVS, and TM modes are indicated in turn every 4 seconds. Press the RIGHT button to enter CLOCK mode.

Sleep Mode: If no signal is received for 300 seconds, the computer enters Sleep Mode, retaining the CLK value. It will return to the former mode with all collected data when any signal is input or any button is pressed.

Freeze Frame Memory: Press the LEFT button at any time to enter freeze frame memory mode. Flashing TM data will appear. Press the RIGHT button to view DST, MXS, AVS, and TM records. Press the LEFT button to exit.

Buttons Instruction: Press the RIGHT button to choose any mode (ODO, DST, MXS, AVS, TM, SCAN, CLOCK). The LEFT button is primarily used for Freeze Frame Memory mode. In Freeze Frame Memory mode, press the RIGHT button to display data, then re-press the LEFT button to return to other modes.

Maintenance Features

Malfunctions and Problems Troubleshooting:

• No speedometer / Inaccurate value: Check for improper magnet/sensor alignment or incorrect wheel circumference input.
• Slow display response: The temperature might exceed operating limits (0°C~55°C).
• Black display: The temperature might be too high, or the device was in direct sunlight for too long. Move it to a shaded area for a period.
• Weak display / Irregular figures: Indicates poor battery contact or a dead battery. Remove and reinstall the battery after 10 seconds.

Accessories: The device comes with a mounting shoe, sensor, battery (1.5V/AG13), wheel magnet, and cable ties for installation.

SunDING SD-548B Specifications

General

Brand	SunDING
Model	SD-548B
Category	Bicycle Accessories
Language	English