Advantech ADAM-4570W User Manual page 53

The host PC can access the EDG device at a local site, but after
moving the EDG device to a remote site, the PC can no longer access
it.
Due to differing network interface connections, your dynamic IP address
might have changed, and as a result, you are no longer on the ADAM-
4570W/4571W's access control list.
To resolve this issue:
1. Confirm the new IP address of the EDG device.
2. Ask the network administrator to set up the server configuration so
that you are on the ADAM-4570W/4571W's access control list.
Data transmission rates are very low, and the wireless connection is
sometimes broken
There are two conditions that may cause this problem:
1. There is not enough bandwidth available. This may be caused by
too many clients, and/or transfer of large amounts of data by other
clients over the same access point.
2. Serious signal disturbance.
Condition 1: Lack of Bandwidth
To improve transmission rates you can add more access points in the
same ESS (Extended Service Set). To do this, ensure that the same SSID
is set on each access point, but use different channels to avoid interfer-
ence. Multiple access points will disperse data transmissions and solve
the traffic situation effectively.
Condition 2: Serious Signal Disturbance
You can usually solve this problem by adjusting the antenna angle, or by
covering nearby motors or generators to shield off EMI and other noise
disturbances.
47 Chapter 4