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Troubleshooting
8 Troubleshooting
8.1
Duty cycle
The duty cycle is a legally regulated
limit of the transmission time of de-
vices in the 868 MHz range. The aim
of this regulation is to safeguard the
operation of all devices working in the
868 MHz range.
In the 868 MHz frequency range used
by us, the maximum transmission time
of any device is 1% of an hour (i.e.
36 seconds in an hour). Devices must
cease transmission when they reach
the 1% limit until this time restriction
expires. Homematic IP devices are de-
signed and produced with 100% con-
formity to this regulation.
During normal operation, the duty
cycle is not usually reached. However,
repeated and radio-intensive pairing
processes mean that it may be reached
in isolated instances during start-up
or initial installation of a system. If the
duty cycle limit is exceeded, the device
may stop working for a brief period.
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