Installation Instructions

External WiFi and Cellular (Client Communication)
The ADG-400 uses the External WiFi or Cellular modules to establish connection to ground based servers
based on network priority defined in the configuration file. Both the Client Wi-Fi and Cellular modems
are disabled in air and are operational only on ground.
The External WiFi and Cellular RF signals use the same antenna connections on the rear of the ADG-400
through a software controlled RF switch. Two SIM card slots are provided in the ADG-400 to support
cellular operations in different regions. This means that only one is possible at a time, requiring the
configuration file to include which method of communication contains priority.
The ADG-400 client connection first attempts to connect using the connection type (Wi-Fi, Cellular SIM
Card 1, or Cellular SIM Card 2) specified by the configuration file’s priority and retries the connection to
the client connection type as many times as specified in the configuration. It also retries the connection
based on the retry interval specified in the configuration. If the ADG-400 Client Connection cannot
connect to the client connection type after the number of retries specified, the ADG-400 attempts to
connect using the next connection type in priority. The priority list connections are attempted
sequentially. The ADG-400 will loop indefinitely through the connection list if no end-point exists to
create a successful connection to. If the client connection is lost involuntarily, and not due to aircraft
take-off or loss of power, the client will retry the highest priority connection method first.
All client connections are secured with certificate-based encryption.
WiFi and Bluetooth
The WiFi and Bluetooth module can operate while in-air or on ground. This module may operate
simultaneously as the WiFi client and Bluetooth connection. This module can use internal antennas
located on the front panel of the ADG-400 or through the rear antennas using a software controlled RF
switch.
RF Parameter Control
The control of RF parameters will be up to the application software and maintenance personnel. Due to
the limited power of the devices, it is unlikely that the power of the device will be altered. For
certification testing, assume device is always operating at maximum power.