RC4 decoder V2.0. - October 2017
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3.2. Installation RC4 system Drone Racing
Sport
Loopwidth
Drone
2.5 m x 2.5 m (8,2ft x 8,2ft)
Installation of the detection loop wires and cabling For Drone Racing
1.
The detection loop must be positioned in such a way that the transponder can go through the loop.
2.
The detection loop can be used in gates with a maximum size of 2,5m x 2,5m (8,2ft x 8,2ft)
3.
The detection loop is sensitive to interference, sometimes emitted by nearby cables, LED bars or other
electronic devices. When possible, keep other cables/devices at least 5m (15ft) away from the detection loop
4.
For best performance MYLAPS recommends using non-metallic gates as these might also interfere with the
detection loop
3.3.Testing the detection loop installation
Once the loop has been installed, it should be tested to ensure that it is functioning correctly. We also recommend repeating
the same procedure at the start of each race event. You can determine if your loop is functioning correctly by doing the
following tests:
1. Connect the detection loop to the decoder and computer running MYLAPS timing software. Check the background noise,
which is updated every 5 seconds in the MYLAPS timing software. The background noise level should be between 0 and 40
points. A higher value may indicate a bad loop installation or interference by other electrical equipment in the area. Try
switching off any suspected equipment or removing nearby objects and check for improvements. Short-wave radio
transmitters may cause an increased background noise, especially at night.
2. Check the signal strengths of the transponders as they are picked up by the system during a test. A good loop will yield
consistent transponder signal strengths of at least 100 points with a hit rate of at least 20 points. The hit rate may vary
depending on the speed of the transponder passings (slower passings yield higher hit counts), but the signal strength
should be consistent for the same car.
If noise is higher than 40 points, make sure that the signal strenght of the transponder is at least 60 points higher that the
noise level.
