User Manual

Windows Zero Config is not active
The SCU Tray Icon global setting is On (the default setting)
Once the service is active, if you remove the radio, turn off the device, make WZC active, or set the Tray Icon
global setting to Off (and power cycle the device), then the service is stopped and the tray icon removed.
When the service is active, it queries the driver every three seconds for the status of the connection for the active
profile, as selected in the SCU Main window. Based on the driver's response to the query, the service displays one
of the following icons:
The radio is not associated/authenticated to an AP
The signal strength (RSSI) for the current AP (to which the radio is associated) is -90 dBm or weaker,
which means that a Summit 802.11b/g radio will operate at 802.11b data rates only
The RSSI for the current AP is stronger than -90 dBm but not stronger than -70 dBm, which means
that a Summit radio will operate at 802.11g or 802.11a data rates that are less than 54 Mbps
The RSSI for the current AP is stronger than -70 dBm but not stronger than -50 dBm, which means
that a Summit radio should operate consistently at 54 Mbps
The RSSI for the current AP is stronger than -50 dBm
When you tap the icon, the SCU application is launched. On most CE devices, the System Tray icon is not visible
while SCU is running, but the service remains active. If SCU usually runs on the device, or if you want to
maximize performance, then you should disable the System Tray icon service by setting the Tray Icon global
setting to Off and power cycling the device.
5.0 Regulatory Domains and Channels
Summit radios are certified for operation in three regulatory domains:
FCC, which is governed by the Federal Communications Commission, the regulatory agency and standards
body for the Americas and parts of Asia
1.
ETSI, which is governed by the European Telecommunications Standards Institute, the standards body
applicable to most of Europe, Africa, the Middle East and parts of Asia
2.
TELEC, which is governed by the Telecom Engineering Center, the standards body for Japan3.
A Summit radio can be programmed for any one of these three domains. Alternatively, a Summit radio can be
programmed for a Worldwide domain, which enables the radio to be used in any domain.
A Summit radio's regulatory domain determines the radio's maximum transmit power and the frequency channels
available to the radio. An 802.11g radio, which supports both 802.11b and 802.11g, operates in the 2.4 GHz
frequency spectrum, where up to 14 channels, numbered 1 to 14, are defined. Adjacent channels overlap. In fact,
there must be five channels of separation to avoid overlap and co-channel interference. As an example, channels
1, 6, and 11 are non-overlapping.
An 802.11a/g radio operates in both the 2.4 GHz spectrum for 802.11b and 802.11g and the 5 GHz spectrum for
802.11a. The 5 GHz frequency spectrum is grouped into sets of channels, or bands:
UNII-1: 36, 40, 44, 48
UNII-2: 52, 56, 60, 64
Intermediate: 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
UNII-3: 149, 154, 159, 165
None of the channels in these bands overlap. Note that for FCC countries, UNII-1 operation is allowed only
indoors. The table below shows the channels that are available in each regulatory domain: