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The Industrial, Scientific and Medical (ISM) radio
frequencies may contain emissions from microwave
ovens, heaters, and other noncommunication devices.
While these types of devices usually pose no threat of
interference as they are low-powered devices, the possi-
bility exists that some industrial high power systems may
wipe out any attempted communication use of a WLAN.
Therefore, perform a site survey and interference analysis
with a spectrum analyzer to view the entire spectrum,
looking for signals that might not only be within the fre-
quency range of the intended WLAN but also could be
near or at the same frequency and cause interference.
Roche Diagnostics supports industry wireless standards
and recommends using products that have Wi-Fi certifica-
tion. This certification tests products to the 802.11 industry
standards for basic connectivity, security, authentication,
Quality of Service (QoS), interoperability and reliability. The
Wi-Fi CERTIFIED logo is an assurance that the Wi-Fi Alli-
ance has tested a product in numerous configurations and
with a diverse sampling of other devices to ensure compat-
ibility with other Wi-Fi CERTIFIED equipment that operates
in the same frequency band. The Wi-Fi Alliance network of
independent test labs conducts interoperability testing
programs to ensure that wireless devices work together
and support secure connections.
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