Advantech EKI-6321AG User Manual page 50

Transmit power of wireless interface set in SMT-12.
- Data Link Rate
Real-time data transmission rate. When Data Link Rate in "Interface Configuration" is set, it displays
here. Otherwise, when it is set as AUTO in "Interface Configuration", Data Link Rate here indicates the
maximum transmission rate available, and can be used as an indication of link quality. The maximum link
rate according to 802.11a/g is 54Mbps. It Only available when the interface is set as an AC.
- Link Quality
Calculated from RSSI, signal and noise level to indicate the quality of the communication link in
percentage.
- Channel
The channel used by the wireless interface.
- Signal Level
A -70 ~ -50dBm signal level is recommended for a good connection. Too low a signal, the wireless link
between AP and AC cannot be established. Too high a signal level, the power amplifier at the receiver
might be forced to operate in saturation region and distorts the signal waveform. Hence likely to result in
reception error. Since the signal level at AP is defined by the user, Signal Level is only available when the
interface is set as an AC.