Installation Manual

INS_NW7[E]/M_REV– 06/10/13 PAGE 50
INSTALLATION AND OPERATION MANUAL NW7[E]/M
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Enable Enables the wireless network.
Disable Disables the wireless network.
Country Code Selects the country. Each country has its own transmit power and frequency regulations.
To ensure regulatory compliance, you must select the country where the device is
operating in. The transmit power levels for each channel are tuned accordingly.
Wireless Profile The default choice of 802.11a+n is a combination of 802.11a and 802.11n, and operates
in the 5 GHz frequency band.
Channel
Spectrum Width
Selects whether 20 MHz or 20/40 MHz bands are used. A 40 MHz band has twice the
throughput of a 20 MHz band. A smaller bandwidth may allow more devices to be
connected. The 20/40 MHz option allows both 20 and 40 MHz bands to be used.
Channel Chooses the frequency channel. The default setting of Auto is may be used. For an AP,
it would select the channel with the least interference from other APs. For a station,
it would automatically select the same channel as its AP. The frequency channel may
also be manually selected. An AP and its station must have the same channel in order
to communicate.
Antenna Gain
(dBi)
Represents the gain relative to an isotropic antenna. A higher antenna gain results in
the transmit power more focused towards a certain direction. When Obey Regulatory
Power is checked, the value of the antenna gain would be taken into account to limit
the selectable transmit power, such that the EIRP limits of the country are satisfied.
Transmit Power
(dBm)
Limits the maximum transmit power of the card at that particular frequency, e.g. 4
dBm, 5 dBm, …, 22 dBm or “Max”. This is the power supplied to the antennas of the
radio. The minimum transmit power values for the radios are:
• For 2-Chain: 4 dBm
The “Max” power depends on both the country and the frequency channel used.