Summit Manufacturing Utility (SMU) Guide 03/20/08
Summit Data Communications, Inc. 6CONFIDENTIAL
The table below shows the channels and the nominal maximum transmit power values that are supported
in each regulatory domain with V2.01:
2.4 GHz 5 GHz (AG radio only)
Domain Channels Tx (.11b) Channels Tx
FCC 1-11 18 dBm UNII-1 and UNII-3 14 dBm
ETSI 1-13 18 dBm UNII-1, UNII-2, and Intermediate 14 dBm
TELEC 1-14 17 dBm UNII-1 and UNII-2, plus
additional channels: 34, 38, 42, 46 14 dBm
WorldWide: no 802.11d 1-11 17 dBm UNII-1 14 dBm
WorldWide: 802.11d All 18 dBm All 14 dBm
V2.01 of Summit software supports a performance-optimized version of IEEE 802.11d, the ratified
standard for the operation of a wireless LAN client radio in multiple regulatory domains. This 802.11d
support ensures that a Summit radio that is programmed for the WorldWide regulatory domain can adjust
its 2.4 GHz and 5 GHz channel sets and maximum transmit power settings to match those for the country
specified in the Country information element transmitted in an access point’s (AP’s) association response.
To take advantage of 802.11d support in Summit software and ensure optimal performance, an
organization that uses devices with Summit radios must make sure that every AP on the wireless LAN
supports 802.11d, specifies the correct Country information element, and broadcasts its SSIDs. The
device manufacturer or other organization that uses the Summit Manufacturing Utility to program
Summit radios must ensure that every Summit radio is programmed for a regulatory domain of
WorldWide. A radio that is programmed for a regulatory domain of FCC, ETSI, or TELEC will ignore
the Country information elements from APs.
A Summit radio uses 802.11d only when it tries to associate on an SSID for the first time. During the
initial association process, if the AP provides a Country information element, then the radio configures its
channel set and maximum transmit power for that country. The radio assumes that all APs with the same
SSID have the same 802.11d country code; as a result, the radio effectively ignores the country code
when roaming from one AP to another. The radio will continue to use the channel set and maximum
transmit power for a country until the radio disconnects from the WLAN (with that SSID).
2.2.4 Bluetooth Coexistence
When Bluetooth coexistence is on, pins 39 and 45 of the radio are used for two-wire Bluetooth
coexistence handshaking. When Bluetooth coexistence is off, the handshaking lines are not used. The
default value is “Off”.
2.2.5 BG Max Antenna Adjust and A Max Antenna Adjust
The last two card settings provides for an adjustment to the radio’s transmit power to accommodate a 2.4
GHz (802.11b/g) antenna, a 5 GHz (802.11a) antenna, or a dual-band antenna with a gain greater than 0
dBm. The values for each of these settings, “BG Max antenna adjust” and “A Max antenna adjust”, is the
degree of antenna attenuation expressed as a percentage of dBm, not milliwatts (mW), with the
percentage based on a TELEC 50 mW test. On the next page is a table of popular dBm values and their
corresponding mW values.
Here is an example: In ETSI, to ensure that the maximum 802.11b transmit power is 50 mW, use 94%:
94% x 18 dBm = 16.92 dBm = 50 mW
The default value is “100%”.
