JDC Electronic SA Speedwatch - Manual (Page 5)

COUNTDOWN TIMER
The SPEEDWATCH can be set to provide a
countdown timer for the start of races. To
enter the programming mode, you must be
either in MANUAL chronometer mode with the
timer stopped or in automatic and reading any
signal (the timer will be stopped). Press and
hold both the SPEED and CHRONO buttons for
three seconds to enter the programming mode.
Press the SPEED button to advance to the timer
setting. Press the CHRONO or DISTANCE buttons
to select the countdown timer. This can be set
to 10, 6, 5, 3, or 1 minutes.
Press the SPEED and CHRONO buttons for
three seconds to exit the programming mode.
The time is displayed at the top of the LCD, the
countdown timer is displayed in the middle of
the screen.
Press the CHRONO button to start the
countdown timer. All other buttons are
disabled, except for the LIGHT button. Press
the CHRONO button to pause the countdown.
The timer will countdown, with a single beep at
each minute. At one minute left, a double beep
will sound each ten seconds. At ten seconds,
the SPEEDWATCH will beep three times each
second until 0:00. At 0:00 the signal will sound
for two full seconds. When the countdown
timer reaches 0:00, the SPEEDWATCH will
enter the normal operating mode, measuring
speed and distance. The chronometer is reset
to MANUAL, and can be paused by pressing
the CHRONO button. To cancel the countdown
timer, press the CHRONO button to pause the
countdown. Then press and hold the SPEED and
CHRONO buttons for three seconds to enter the
programming mode. Do not change the timer
setting; exit the programming mode by pressing
and holding the SPEED and CHRONO buttons
for three seconds.
5
5. Basic Operating Mode
GENERAL BUTTONS USE
LIGHT Button: Turns on the backlight for 5
seconds (in any mode).
SPEED Button: Select the displayed speed in
bold character: instant, balanced, maximum or
trip average.
DISTANCE Button: Select the displayed distance,
trip or total.
CHRONO Button: Starts and stops the
chronometer and speed reading. Also starts
and pauses the countdown timer.
MEASURING SPEED AND DISTANCE
The SPEEDWATCH measures the actual speed
through water, not speed over land as with a
GPS. The small impeller is mounted under the
boat or kayak and generates a magnetic field
when rotating. This magnetic field is received by
the transmitter through the hull with no wires,
up to 30 centimeter. The transmitter sends out a
low frequency radio signal which is received up
to 5 meter by the display. To properly read speed
data, the impeller and transmitter should be
mounted properly. Please see the MOUNTING
section for detailed instructions. There are two
modes for measuring speed through the water,
MANUAL or AUTOMATIC. In MANUAL mode,
the timer is started and stopped by pressing the
CHRONO button. Speed is only measured and
registered when the timer is ON. In AUTOMATIC
mode, the timer starts when a signal is received
from the transmitter.
To reset the trip distance and the chronometer,
press the CHRONO button in manual mode
to pause the chronometer. Then, press and
hold the DISTANCE button. To reset the total
distance, press and hold 10 seconds the
DISTANCE button.