Disrupted Data Transmission Due To The Received Power Being Too High - Siemens SIMATIC NET SCALANCE W780 Series Configuration Manual

8.2 Disrupted data transmission due to the received power being too
high
Causes and effects of excessive received power
If the received power at the input of a SCALANCE W device is too high, this overdrives the
amplifier circuit. Overdrive can occur on clients and access points. If the received power on
the SCALANCE W device is greater than -35 dBm, this can result in disrupted
communication.
Information about the signal strength [in dBm] is displayed in WBM in the following tabs:
Access point mode:
● Information > WLAN > Client List
Client mode:
● Information > WLAN > Available AP
● Interfaces > WLAN > Signal recorder
The power of the input signal on the SCALANCE W device is influenced by the following
factors:
● Distance between the WLAN partners
● Reflections of the electromagnetic waves by parts of the building
● Setting of the "max. Tx Power" (transmit power) (Interfaces > WLAN > Basic) and the
antenna settings used (Interfaces > WLAN > Antennas).
Solution
If communication is disrupted by an excessive signal strength (greater than -35 dBm), you
can eliminate the problem in the following ways:
● Increase the distance between the transmitter and receiver.
● Reduce the transmit power of the IWLAN partner with suitable settings in WBM or CLI.
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
Configuration Manual, 08/2018, C79000-G8976-C267-13

8.2 Disrupted data transmission due to the received power being too high

Troubleshooting/FAQ
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