Examples:
Q. How can I distinguish received data from
noise?
A. Use the RSSI signal. It is difficult to
determine whether you are receiving data or noise
only using the signal from the DO. The DC voltage of
the RSSI indicates received signal strength. The RSSI
level can be monitored using a single-chip CPU
equipped with an AD converter. If you set the RSSI
threshold level for distinguishing signal from noise,
when the RSSI level is higher than the threshold, the
DO output is real data.
Q. There is a problem with communication
range.
What is the problem? What should be
checked?
A. The
possible causes are:
- * The position of the antenna
- * Interference from other equipment
- Please check RSSI output.
Q. What is multipath fading? What is a dead
spot?
A. The radio waves emitted from the
transmitter follow
various paths as they disperse towards the antenna of
the receiver. Multipath fading occurs due to the
combination of waves that arrive directly from the
transmitter to the receiver, and waves that arrive after
being reflected off walls, ceilings, terrain and
other obstacles. - More
