Tests

AN3975

20/26

Doc ID 022170 Rev 1

Figure 14.

Closed loop setup for communication test using bigger datafiles, UART

loop

Figure 15.

Closed loop setup for communication test using bigger datafiles, RS485

loop

After setting the system to work in closed loop test mode, the test data block can be sent to

the system via Windows HyperTerminal, see Figure 16. It is recommend to create a file with

predefined data to send in order to be able to perform this test quickly and to avoid

superfluous typing of the characters with every new test.

Figure 16.

Closed loop test - 320-byte data transfer

In order to have higher control over the system and over the traffic on the power line, one

more ST7590 modem configured as a service node should be connected to the power line

network. The node should be switched into the sniffer mode by the PC GUI application