Dell W-Series 207 Instant 6.5.1.0-4.3.1.0 User Guide - Page 65
Configuring External Antenna, EIRP and Antenna Gain, Configuring Antenna Gain
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Configuring External Antenna If your W-IAP has external antenna connectors, you need to configure the transmit power of the system. The configuration must ensure that the system's Equivalent Isotropically Radiated Power (EIRP) is in compliance with the limit specified by the regulatory authority of the country in which the W-IAP is deployed. You can also measure or calculate additional attenuation between the device and the antenna before configuring the antenna gain. To know if your W-IAP device supports external antenna connectors, refer to the Dell Networking W-Series Instant Installation Guide that is shipped along with the W-IAP device. EIRP and Antenna Gain The following formula can be used to calculate the EIRP-limit-related RF power based on selected antennas (antenna gain) and feeder (Coaxial Cable loss): EIRP = Tx RF Power (dBm) + GA (dB) - FL (dB) The following table describes this formula: Table 18: Formula Variable Definitions Formula Element Description EIRP Limit specific for each country of deployment Tx RF Power RF power measured at RF connector of the unit GA Antenna gain FL Feeder loss Example For example, the maximum gain that can be configured on a W-IAP with AP-ANT-1F dual-band and omnidirectional antenna is as follows: Table 19: Maximum Antenna Gains Frequency Band Gain (dBi) 2.4-2.5 GHz 2.0 dBi 4.9-5.875 GHz 5.0 dBi For information on antenna gain recommended by the manufacturer, see dell.com/support. Configuring Antenna Gain You can configure antenna gain for W-IAPs with external connectors by using the Instant UI or the CLI. In the Instant UI To configure the antenna gain value: 1. Navigate to the Access Points tab, select the W-IAP to configure, and then click edit. 2. In the Edit Access Point window, select External Antenna to configure the antenna gain value. This option is available only for access points that support external antennas, 3. Enter the antenna gain values in dBm for the 2.4 GHz and 5 GHz bands. Dell Networking W-Series Instant 6.5.1.0-4.3.1.0 | User Guide Customizing W-IAP Settings | 65