Proxim 7920, 7921 manual

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There are 15 independent Channels designated 1 through 15. This means that there are 15 different sequences of frequency hops. Each Channel is at a different frequency at a different time. To minimize interference, set each Ethernet Adapter acting as a Master within the same area to a different Domain and Channel. In networks with multiple Access Points, set each Access Point to a different Channel but the same Domain to facilitate roaming.

The Ethernet Adapter’s Channel may be set to a value between 0 and 15, and 0 is the default setting. When set to Channel 0, an Ethernet Adapter automatically selects a Channel upon boot-up based on the configured Domain number. The Channel selected is the Domain number plus 1. Therefore, if the Domain is set to 0, the Channel is 1. Note that the automatic selection procedure will choose Channel 15 when set to either Domain 14 or 15.

This parameter is visible only when the Ethernet Adapter is set as a Master. All Stations will determine their channel by the Master to which they are synchronized.

The Subchannel is a software code that is appended to each radio packet. It does not affect the frequency hopping sequence like a Channel does. Use a Subchannel if you need more than 15 Masters in the same area and, therefore, all the Channels are used. The Subchannels are designated 1 through 15, and 1 is the default setting. This parameter is visible only when the Ethernet Adapter is set as a Master.

For example, you can use Channel 1, Subchannel 1 for Network A and Channel 1, Subchannel 2 for Network B. The two net- works will not communicate with one another. They are, how- ever, still sharing the 1.6 Mbps data rate since they are both using Channel 1.

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Contents Page Copyright FCC Warning Contents Performance Hints Page Introduction RangeLAN2 Family Product Package System RequirementsRangeLAN2 792x Ethernet Adapter Components Quick Installation Attachment of the RangeLAN2 Ethernet Adapter Antenna Page Page Ad Hoc Wireless TopologiesSingle Ethernet AP InfrastructureRoaming on Ethernet LAN Light Overlap Roaming on Ethernet LAN- Heavy Overlap Page Workgroup Concentrator Workgroup ConcentratorPage Repeating Understanding the Hardware Rotary Switches LED Indicators Ethernet LED Radio LED Page Link LED Master LED Override LED 10BASE-T Connector Specification Serial Port Specification Serial Port Specification Mounting Options Antenna OptionsMounting Holes Displaying the Configuration Menu Software ConfigurationPage Following four chapters detail the sub-menus, shown above Page Radio Configuration Menu Radio Parameters Menu Parameter Name Range DefaultPage Page Page Page Page Page Advanced Configuration Menu 300 Advanced ParametersPage Page Display Parameter Values AC O ptim ize View Statistics Radio Statistics Synchronized To StatisticEthernet Statistics Range Performance HintsMicrowave Ovens Page Fixed Node Filtering on RangeLAN2 Access Points TroubleshootingHow to Obtain Help with Your Product Installation Page Model 753x, operating in TB or Single-Ring SR/TB mode LED Error Codes How do I know if Commonly Asked Technical Support QuestionsPossible Solution/Answer Menu Structure Ubcha nnel Ta tion T ype Page Page Radio Parameters ParametersAdvanced Configuration Parameters Procedure for Downloading New Software Page Glossary Page How to Reach Technical Support Operating Temperature -20C to +60C S. SpecificationsIndex Filter Fixed Nodes. See Fixed Node Filtering See also Configuration Menu Xmodem