RC4 decoder V2.0. - October 2017
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4.Operating the MYLAPS decoder
The decoder is not equipped with an on/off switch, therefore connecting the decoder to the mains will switch it on. This will
enable timing of transponder passings after approximately 15 seconds. With each detection of a transponder, a beep will
sound in the headphone and received transponder information is shown on the decoder display.
4.1. Noise level
The decoder determines the average background noise.
The background noise in combination with the signal strength is the most important indicator of the performance of the
hardware system. If a decoder is connected to the computer, the background noise will be indicated in the timeline status
screen.
The average background noise is sent to the computer by the decoder every five seconds.
Noise values:
0 The loop is not detected
10-30 noise level is ok
30-50 noise level is medium
50+ noise level is high, not reliable detection.
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.
4.2. Signal strength
Transponder signal strength, as shown by the timing software and on the decoder screen, should preferably be above 100
points and should at least be 60 points higher than the indicated background noise. The closer the transponder is to the
track, the higher the received signal strength will be. A higher transponder signal strength should allow for greater immunity
against outside interference.
4.3. Number of hits
The number of hits, as shown by the software, is an indication of the number of repeated transponder signal receipts during
a passing. Hit-rates vary with the speed of a passing transponder. Slower passings yield higher hit counts. Usually the number
of hits is greater than 10.
4.4. Firmware update
We constantly strive to improve all our products. For new functionalities and minor changes, you can check our website for a
MYLAPS decoder firmware update. Please go to the support section of the www.mylaps.com website and follow the
instructions found there to download and install updated firmware as applicable.
