Configuring External Antenna

If the Instant Access Point (IAP) has external antenna connectors, you need to configure the transmit power of the system. The configuration must ensure that the system’s EIRPEffective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. is in compliance with the limit specified by the regulatory authority of the country in which the IAP is deployed. You can also measure or calculate additional attenuation between the device and antenna before configuring the antenna gain. To know, if the IAP device supports external antenna connectors, see the Installation Guide that is shipped along with the IAP device.

EIRP and Antenna Gain

The following formula can be used to calculate the EIRP limit related RFRadio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. 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 1: 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

Configuring Antenna Gain

To configure antenna gain for IAPs with external connectors, complete the following steps:

1. In the Network Operations app, select one of the following options:
   • To select an AP group in the filter:
     1. Set the filter to a group containing at least one AP.

        The dashboard context for the group is displayed.

     2. Under Manage, click Devices > Access Points.

        A list of APs is displayed in the List view.
        

   • To select an AP in the filter:
     1. Set the filter to Global or a group containing at least one AP.
     2. Under Manage, click Devices > Access Points.

        A list of APs is displayed in the List view.

     3. Click an AP listed under Device Name.

        The dashboard context for the AP is displayed.

     4. Under Manage, click Devices > Access Point.
2. Click the Config icon.

   The tabs to configure the APs are displayed.

3. Click the Access Points tab.

   The Access Points page is displayed.

4. To edit an AP, select an AP in the Access Points table, and then click the edit icon.
5. Click the External Antenna tab.
6. Enter the Antenna Gain values in dBi for the 2.4 GHz Antenna Gain and the 5 GHz Antenna Gain.
7. From the Antenna Polarization Type drop-down list, select any of the following:
   • co-polarization—Select this option for the polarization of both the transmitting and receiving antenna to be same.
   • cross-polarization—Select this option for the polarization of both the transmitting and receiving antenna to be different.
8. Click Save Settings.