Lantronix xPico 270 80211ac Wi-Fi Bluetooth Embedded IoT Gateway xPico 200r Ce - Page 6

Certification Test Modes Certification testing requires two different modes. The number of units needed for certification testing depends on the regional certifications planned. Consult with your certification lab prior to testing for their recommended quantity of normal mode and continuous mode test units. ♦ Normal mode testing is conducted with the xPico 200 module running the base application software. In this case the unit should be configured to run tests with the module interfaces both idle and fully exercised. For Ethernet and Wi-Fi interfaces iperf or some other network utilization method can be used, serial and USB ports should utilize a similar program to exercise used ports for certification EMC tests. ♦ Continuous mode testing is conducted in cases where full transmitter certification or re-certification is required. The certification lab will require testing on some units that run continuous mode transmitter and receiver tests. Special firmware needs to be loaded on the xPico 200 module to run the continuous transmit and receive mode tests. Once the continuous mode firmware is loaded, the unit will no longer run or load the standard Lantronix application firmware or SDK generated firmware. As a result and prior to certification, some units should be set aside for continuous mode only testing. Hardware Requirements for Continuous Mode Testing These are the hardware requirements needed for continuous mode testing. The continuous mode software can be downloaded at https://www.lantronix.com/products/xpico-200/#docsdownloads/. ♦ To run the xPico 240/250 transmitter and receiver tests for full certification access to the module, serial port and JTAG port are needed. ♦ The JTAG port connections are required to load a special firmware image that allows continuous transmit, continuous receive and other tests required for transmitter certification. ♦ The JTAG pad footprint from the evaluation board should be used to mate to an external JTAG cable. Lantronix uses the Olimex ARM-USB-TINY-H debugger mated to a Tag-connect TC2050-ARM2010 and TC2050-IDC cable for connection to the JTAG port on the xPico 240/250 evaluation board. ♦ In addition to the JTAG connection, access to the xPico 240/250 UART is required for transmitter and receiver certification tests. Lantronix suggests adding a stuff option to the serial port if the serial port is connected to another device. An example of this connection is shown below. This will allow the certification lab to break into the module UART lines and directly control the module UART during continuous mode testing for certification. xPico® 200 Certification Firmware Instructions 6