version
H27507.16.07
Pushing the start/stop button a third time
will continue timing without resetting.
Pushing the red reset button when the timer
is stopped will zero the display.
Pushing the red reset button while the timer
is running displays the lap time, but the
timer will continue to run.
The timer can be stopped and started, but
not reset, while the lap time is displayed. To
go back to the current time, press the reset
button again. Press the reset button once
more to zero the display.
The unit can also be controlled using the 4mm sockets on the front.
The centre socket is common ground, the left socket is the reset circuit, and the right socket is
the start/stop circuit.
Connecting the reset socket to the common
ground has the same effect as pressing the red
reset button, and connecting the start/stop
socket to the common ground has the same
effect as pressing the black start/stop button.
Consider the following circuit made using push-
to-make switches:
Switches A and B are connected in parallel to the
stop start and common ground socket. Switch C
is connected to the reset socket and common
ground.
Pushing switch A will start the timer, and
switch B will stop the timer (or vice versa) and
switch C will reset the timer.
This setup can be used as a simple reaction
timer. Long leads should be used so the tester
can hide switch A and start the timer.
The subject of the test should watch the timer and push switch B to stop the timer as quickly as
they can after it starts.
C
A
B
C
B
A
