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2.1.3 Port limitation
Both ports' max input power(average) in short time is 20dBm, above this
level will damage the port.
It allows long time input level of 10dBm. But within frequency under
100kHz should be less than 0dBm to avoid unexpected damage.
For frequency above 10MHz and the attenuator set to more than 10dB,
the peak power pulse input should be less than 30dBm and its pulse width
needs to be narrower than100us time.
Attention:
Although both ports have ESD protectors, due to the wide RF bandwidth
and other reasons, the protection ability isn't very strong, which is meant for
the prevention of human electrostatic shock under normal conditions. Avoid
using or connecting to outdoor antenna in thunderstorm weather. When an
external HF antenna is connected, it is necessary to be careful of the
electrostatic hazards of the antenna. Before use, discharge the antenna. User
should avoid using the antenna in windy weather. While using large size HF
antenna, it is recommended to connect a high pass filter with DC grounding
outside to protect the KC908. It is suggested that the suppression of
frequency below 500KHz is better than 30dB.
Before connecting the circuit to be tested, user needs to contact the shield
of the connector with KC908, to make sure the circuit's electric potential
equals KC908's.
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