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JDC ELECTRONIC SA SpeedWatch Instruction Manual

Wireless speed computer
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1. Introduction
The SPEEDWATCH wireless speed computer
is a highly accurate means to measure speed
through water of any low-speed watercraft
such as a sailboat, yacht, kayak or small
powered boats. Designed for the serious racer
and the advanced users, the SPEEDWATCH gives
valuable feedback on the performance of your
watercraft.
The small impeller is placed under the craft, in
a variety of mounting possibilities. When your
boat or kayak is moving through the water,
the impeller rotates creating a magnetic field
that penetrates through hull without wires.
This magnetic field is received by the sensitive
sensor at the end of a cable on the transmitter,
which is placed within 30 cm from the impeller.
The transmitter then sends out a low-frequency
radio signal that is received by the display up to
5 meters. The signal is processed and displayed
as instant speed.
The SPEEDWATCH uses this speed signal to
calculate the instant, balanced, and maximum
speed as well as the trip and total distance. The
SPEEDWATCH outperforms any GPS with regards
to precise speed and distance measurement,
allowing for minute changes in performance to
Wireless Speed Computer
Instruction manual
be registered and adjusted. The SPEEDWATCH
becomes an invaluable tool when sailing or
rowing in currents, as it measures true speed
through water, rather than average speed over
land like a GPS.
The magnetized impeller requires no power
source, the transmitter uses a 9V battery, and
the display includes a long-life Lithium battery,
good for hundreds of hours of use.
FUNCTION
Speed : Instant, balanced, maximum, average
Distance : Trip, total
Chronometer : Automatic or manual
Countdown Timer : 10, 6, 5, 3, or 1 minute(s)
Time of day : AM/PM mode
Backlight : Red backlight

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Summary of Contents for JDC ELECTRONIC SA SpeedWatch

  • Page 1 Designed for the serious racer land like a GPS. and the advanced users, the SPEEDWATCH gives The magnetized impeller requires no power valuable feedback on the performance of your source, the transmitter uses a 9V battery, and watercraft.

  • Page 2: Display Screen Description

    Display - front Transmitter Display - back Impeller TRANSMITTER DISPLAY IMPELLER h) 0.3 m cable a) LCD l) Mounting plate i) Sensor for impeller b) Backlight button m) Fin j) Transmitter body c) Speed select button n) Threaded shaft d) Distance select button o) Threaded base k) Battery cap e) Chronometer start button...

  • Page 3: Start Up The Instrument

    3. Start up the Instrument DISPLAY TRANSMITTER From the factory, the SPEEDWATCH is in a low The SPEEDWATCH Transmitter requires a 9V power state, with the time flashing. Press any battery to operate; this is included in your button to enter normal mode.

  • Page 4: Countdown Timer

    (manual) or “AUTO” (automatic) will flash. Press SPEDD SENSOR CLIBRATION the DISTANCE or CHRONO buttons to change The SPEEDWATCH can be set to accept another settings, and on the SPEED button to confirm impeller, for example a style sensor “paddle- the parameters and advance to the next item.
  • Page 5 5. Basic Operating Mode COUNTDOWN TIMER GENERAL BUTTONS USE The SPEEDWATCH can be set to provide a LIGHT Button: Turns on the backlight for 5 countdown timer for the start of races. To seconds (in any mode). enter the programming mode, you must be...
  • Page 6 "Dual Lock" to avoid any movement. Three mounting systems are included in the SPEEDWATCH kit; a removable fin mount, a DISPLAY large fin to be fixed on the keel back side and a The display can be placed everywhere in the rudder mount.
  • Page 7 This operation allows the SPEEDWATCH to be adjusted for an exceptional accuracy. It’s normally not necessary. However, the SPEEDWATCH can be calibrated with an existing speed sensor to accuracy measure the speed. Carefully clean the area before to stick the adhesive and wait 24 hours before submersion for best adhesion.

  • Page 8: Technical Specifications

    JDC ELECTRONIC SA extends a 12 months’ warranty over parts and labour for this instrument, effective from the date of purchase. JDC ELECTRONIC SA reserves the right to repair or replace any component which may have become faulty in the course of normal use. This repair or replacement shall be carried out at no charge to the customer (parts or labour).

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