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docu: signal amplitudes of transformerless Foccci

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uhi22 2024-10-29 08:09:09 +01:00
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doc/plcSignalAmplitude.md
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@ -56,6 +56,17 @@ with 120ohm termination
- Foccci sees single messages, if 400mVpp -42dB. This is 3mV.
- Foccci does not see the EVSE (modem goes to sleep) if 400mVpp -44dB. This is 400mVpp/158 = 2.5mVpp.
10. Foccci 5.1 transformerless patch, R25=100ohms, receive limit
- 400mV -32dB stable connection.
- 400mV -38dB still works, starting to become instable.
- 400mV -44dB sometimes modem sleep, sometimes not.
- 400mV -50dB modem sleep.
11. Foccci 5.1 transformerless patch, R25=100ohms, transmit level
210mVpp
# Attenuation calculator