CONNECT DEVICES TO THE AUXILIARY PORT OF THE TYPE 3 DECODER
An 15 pin sub D-connector is located at the rear side of the Type 3 Decoder.
The auxiliary port has 3 Inputs (photocell 1 , External start /Photocell 2 and Sync pulse), 1 Output and a
control port for a GPS receiver. All inputs can be triggered by a 5 VDC (5-15 mA) pulse.
1 Photocell 1 Input
This input can be used as backup in case a racer has no or a faulty transponder.
The timing software must be programmed accordingly (see Protocol information)
In Orbits:
If a competitor with a transponder is passing the finish line, Orbits will receive both photocell time and
transponder time from the decoder, and assign them to the same passing. If a competitor without a
transponder passes the finish line, Orbits only receives a photocell time and will ask you to identify the
competitor number.
Specification:
The minimum time between 2 Photocell Inputs is 40ms
The photocell input will be recognized as a passing of transponder number 9991
Connect a photocell to Photocell 1 Input
Use the MYLAPS photocell cable article no. 5503 or create a cable using the information from the cabling
below.
Two types of photocells are available: passive and active photocells. They both operate as a switch.
Connect a passive photocell
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Connect an active photocell
2 External start/ Photocell 2 Input
This input is mostly used to trigger the start of the timing software. In active sports, the input can be coupled
to a startgun or a start button.
The timing software must be programmed accordingly (see Protocol information)
In Orbits:
After starting a session with a Warm-up flag, the green flag will be initialized automatically when the decoder
receives a Photocell 2 input from the Auxiliary port. Please check you MYLAPS hardware manual for wiring
details.
Specification:
The photocell input will be recognized as a passing of transponder number 9992 (see Protocol information)
Connect an external start button
3 Sync Pulse
This input can be used to synchronize the time when having several timing points (decoders).
The timing software must be programmed accordingly to perform the time synchronization (see Protocol
information)
Specification:
The photocell input will be recognized as a passing of transponder number 9993 (see Protocol information)
Note: This way to synchronize the time is not the most accurate. MYLAPS recommends to perform
the time synchronization of multiple decoder by connecting a GPS receiver to each decoder (see 5
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GPS receiver).
Connect a synchronization contact
4 Output
The decoder output can be used to activate a buzzer or a light
The timing software must be programmed accordingly to activate the output (see Protocol information)
Specification of the output:
Max. current: 50mA
Max. Voltage 5V
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