Spektrum SPM1305 - Manual (Page 20)

20 SPEKTRUM TELEMETRY
Lap Counter/Timer
The lap counter records and displays the number of laps and lap time
for up to 99 laps. In order to use the lap timer, an optional lap trigger
must be used. The lap counter/timer system utilizes an infrared sensor
in the car and the lap trigger projects an infrared light across the track
that triggers the sensor when the car passes. A Lexan mount is provided
to allow easy mounting of the lap counting sensor in your vehicle.
Note: The lap sensor must be mounted in visible sight of the
lap trigger. Normally this means just inside the side window.
If the windows are painted, it will be necessary to cut a small
hole in the body to allow the IR light to trigger the sensor.
Lap Counter/Timer Installation
• Servo tape the lap sensor to the Lexan mount as shown.
• Determine the mounting position that will place
the sensor behind the side window.
• Cut and/or bend the Lexan mount to position the sensor in the
appropriate position and servo tape the mount in place.
• Plug the lap sensor into the L (lap) port in the telemetry
module (see telemetry module photo above).