User manual ZYXEL NWA-570N

[. . . ] NWA570N Wireless N Access Point/Bridge User's Guide Version 1. 00 10/2007 Edition 1 DEFAULT LOGIN IP Address http://192. 168. 1. 2 Password 1234 www. zyxel. com About This User's Guide About This User's Guide Intended Audience This manual is intended for people who want to configure the ZyXEL Device using the web configurator. You should have at least a basic knowledge of TCP/IP networking concepts and topology. Related Documentation · Quick Start Guide The Quick Start Guide is designed to help you get up and running right away. It contains information on setting up your network and configuring for Internet access. [. . . ] Select Yes or No to enable or disable GI (Guard Interval). The GI refers to the interval given between data transmission from users in order to reduce interference. Reducing the GI increases data transfer rates but also increases interference. Increasing the GI reduces data transfer rates but also reduces interference. Set the output power of the device in this field. If there is a high density of APs within an area, decrease the output power of the device to reduce interference with other APs. The options are Full, 50%, 25%, 12% and Min. Use this field to select a maximum data rate for the wireless connection(s). The options are Auto, 1 ~ 54M, or MCS0-7. 2[15] ~ MCS15-144. 4[300]. Select Auto to let the NWA570N decide the most suitable data transfer rate. If you are not certain of what setting to choose, choose Auto. Alternatively select a data transfer rate from 1 to 54 Mbps. Please note that this is a total rate to be shared by all of the device's wireless connections. The NWA570N also lets you configure the maximum data transfer rate based on the IEEE802. 1n draft 2. 0 modulation and coding scheme (MCS). The MCS lists data transfer speeds given a set of network conditions. The "MCS0" in the MCS07. 2[15] option refers to the first set of network conditions and so on. So MCS07. 2[15] is appropriate for network conditions which provides data transfer rates of 7. 2 Mbps and 15 Mbps at bandwidths of 20 Mhz and 40 Mhz respectively. A-MPDU aggregation A-MDSU aggregation RIFS Short GI Output Power Management Data Rate Management ZyXEL NWA570N User's Guide 67 Chapter 6 Wireless Screens Table 15 Wireless Settings: Bridge (continued) LABEL Preamble Type DESCRIPTION Preamble is used to signal that data is coming to the receiver. Short preamble increases performance as less time sending preamble means more time for sending data. All IEEE 802. 11b compliant wireless adapters support long preamble, but not all support short preamble. Select Long preamble if you are unsure what preamble mode the wireless adapters support, and to provide more reliable communications in busy wireless networks. Select Dynamic to have the device automatically use short preamble when all wireless clients support it, otherwise the device uses long preamble. Note: The device and the wireless stations MUST use the same preamble mode in order to communicate. Channel Mode Select whether the NWA570N uses a wireless channel bandwidth of 20 or 40 MHz. A standard 20MHz channel offers transfer speeds of up to 150Mbps whereas a 40MHz channel uses two standard channels and offers speeds of up to 300Mbps. [. . . ] is firmware-limited to channels 1 through 11. · To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm must be maintained between the antenna of this device and all persons. ! Notices Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device has been designed for the WLAN 2. 4 GHz network throughout the EC region and Switzerland, with restrictions in France. This Class B digital apparatus complies with Canadian ICES-003. [. . . ]