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Demonstrates four distinct methods for securely attaching the mounting shoe to bicycle handlebars.
Lists and visually identifies all components included with the SD-558C computer.
Step-by-step guide for attaching the computer, sensor, and magnet to your bicycle for accurate tracking.
Instructions on switching between DST, TRIP UP/DOWN, and INQUIRY modes for data viewing.
Solutions for common problems like no speed display, inaccurate readings, and slow response times.
Guides on setting temperature, clock, wheel size, speed units, odometer, and trip times.
Explains key metrics like SPD, ODO, DST, MAX SPD, AVS, TM, TTM, RAT, and Stopwatch.
Details Sleep Mode, Over-Speed Reminder, Maintenance/Care Alerts, Freeze Frame Memory, and backlight.
Describes how to reset individual trip data points while preserving other saved information.
This document describes the SunDING SD-558C cycling computer, a device designed to track various riding metrics and provide useful information to cyclists.
The SD-558C is a comprehensive cycling computer that comes with a main computer unit and several accessories for installation and operation. The package includes:
The installation process involves attaching the mounting shoe, sensor, and magnet to the bicycle. The manual outlines four different ways to install the mounting shoe, with detailed illustrations for each.
Mounting Shoe Installation: The mounting shoe and fixed shoe are pre-installed with a sponge sticker. The manual illustrates four methods for installation, ensuring a secure fit on the handlebar.
Computer Installation: The computer slides onto the mounting shoe until it firmly attaches.
Sensor and Magnet Installation: The sensor attaches to the front fork using ties and a pad for stability. The magnet attaches to a wheel spoke. Crucially, the sensor and magnet must be installed on the same side of the fork, with a distance of less than 60cm between them. The arrow on the sensor should point towards the magnet, and the distance between the sensor and magnet should be precisely 3mm for accurate readings. For wired control versions (SD-558A), the wired control button attaches to the handlebar using ties through slots under the button.
Battery Installation: To install the CR2032 battery, remove the battery cover from the bottom of the computer using a flat blade screwdriver. Insert the battery with the positive (+) pole facing the battery cover, then close the cover.
The SD-558C offers a wide array of functions to track and display various cycling data:
The computer offers various settings accessible through different modes and button presses.
Temperature Setting (°C / °F): In INQUIRY MODE, press SET for 3 seconds to enter DATA SETTING MODE. Use UP to choose °C or °F, then SET to confirm and enter CLOCK SETTING MODE.
12/24 Clock Setting: Press UP to switch between 12/24 hour modes. Press SET to confirm and enter HOUR setting. Use UP to adjust the hour, then SET to set MINUTE and SECOND, adjusting with UP. Confirm with SET to enter WHEEL SIZE SETTING MODE.
Wheel Size Setting & Chart: In WHEEL SIZE SETTING MODE, the default circumference is 2080mm. Refer to the provided chart for correct wheel circumference figures (e.g., 700Cx23mm = 2096mm, 26"x1.95" = 2050mm). Use UP to change figures and SET to confirm, then jump to the next figure. Range: 0-9999mm. Confirm with SET to enter (KM/H) / (M/H) SETTING MODE.
KM/H / M/H Setting: In (KM/H) / (M/H) SETTING MODE, press UP to switch between KM/H or M/H. Press SET to confirm and enter ODOMETER SETTING MODE.
Odometer Setting: In ODOMETER SETTING MODE, press UP to adjust the flashing ODO figure. Press SET to jump to the next number and set them. Default is 0000 (range: 0-9999kms/miles). Confirm with SET to enter RAT SETTING MODE.
RAT Setting: In RAT SETTING MODE, press UP to adjust figures. Press SET to jump to the next figure. Default is 00:00:00 (range: 0-9999Hrs). Confirm with SET to enter DISPLAY MODE, then press MODE to enter TM UP & TRIP UP SETTING MODE.
TM UP & TRIP UP Setting: In TM UP & TRIP UP SETTING MODE, press and hold SET for 3 seconds to set TM UP & TRIP UP. Use UP to adjust figures, SET to jump to the next figure. TM UP default is 00:00:00 (range: 0-99:59:59Hrs). TRIP UP default is 000.0 (range: 0-999.9kms/miles). Confirm with SET to finish and return to TM UP & TRIP UP SETTING MODE. Press SET to enter TM DOWN & TRIP DOWN SETTING MODE.
TM DOWN & TRIP DOWN Setting: In TM DOWN & TRIP DOWN SETTING MODE, press and hold SET for 3 seconds to set TM DOWN & TRIP DOWN. Use UP to adjust figures, SET to jump to the next figure. TM DOWN default is 00:00:00 (range: 0-99:59:59Hrs). TRIP DOWN default is 000.0 (range: 0-999.9kms/miles). Confirm with SET to finish and return to TM DOWN & TRIP DOWN SETTING MODE.
One Single Trip Data Reset: In any mode, press and hold UP for 3 seconds. All single trip riding data will reset to zero, except CLK, ODO, and RAT.
Mode Instruction: When the battery is inserted, the display defaults to DST mode. The computer has three modes: DST, TRIP UP/DOWN, and INQUIRY MODE. Each press of the MODE button switches between these modes.
Sleep Mode: If inactive for over 300 seconds, the computer enters Sleep mode, hiding all data except CLK. It wakes up and returns to the previous mode when cycling starts or any button is pressed.
Over-Speed Reminder: When SPD exceeds 20KM/H, the SPD value will flash until it drops below 20KM/H.
Maintenance Alert / Machine Oil Remainder: When ODO exceeds 300KM, the "MAINTENANCE ALERT" icon will flash. Clear by pressing both UP and MODE buttons simultaneously.
Care Reminder: When ODO exceeds 300KM, the "MACHINE OIL REMAINDER" icon will flash. Clear by pressing both UP SET and MODE buttons simultaneously.
Freeze Frame Memory: Press UP in any mode (except STOPWATCH) to enter Freeze Frame memory mode. DST, TTM, and SPD data will be frozen and figures will flash.
Wired Remote Control (SD-558A): For the SD-558A model, the wired remote control button replaces the MODE button function.
Auto Wake Up: The device automatically wakes up and starts working when motion is detected.
Auto Back Light & Ever-Brightening Back Light: The backlight automatically activates in low light conditions. Pressing any button turns on the backlight. It turns off automatically in sufficient light. To enable continuous backlight (Ever-Brightening), press MODE for 5 seconds. To turn it off, press MODE again for 5 seconds. The Ever-Brightening backlight turns off when the device enters SLEEP MODE.
The manual also provides troubleshooting for common issues:
The product incorporates several patented technologies, including:
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