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(4) Distance between AP and client is too long.
5. Why is signal quality high while throughput capacity is low?
Analyze reasons:
(1) Too much interference or multipath interference.
(2) Ethernet port of the device breaks down.
6. Frequent packet loss. Serious packet loss occurs when many devices are installed in the same
region. It will be improved if channels are changed.
Same frequency interference occurs in case that multiple DH-PFM88X devices are used in the
same region, and channels of every two devices are not isolated. It is suggested that the user should
isolate their frequency, and make sure that their channels don’t overlap. When channel width is 20M,
frequency difference between two devices shall be over 20M.
7. Packet loss and large delay occur when the computer pings device address:
(1) APs connecting with the same POE switch shall carry out port isolation.
(2) Crystal plug of network line isn’t connected well (crystal plug shall be remade).
8. The user suffers from frequent lost connection and low speed:
(1) Too many users connect with AP.
(2) AP signal is weak.
(3) There are many serious interference signals in surrounding environment; client and AP aren’t bound.
(4) Check whether user quantity and upper network bandwidth are saturated or not.
