4/Tests and Troubleshooting
4-10 1503-0151-000 5/26/0
Test Serial Ports
The software performs an internal test on both of the serial ports. The software
sets up the serial ports so any data sent out the serial ports is echoed directly back
to that serial port. The test fails if the data sent out is not equal to the data received.
The status of the test is displayed on the ventilators front screen.
Serial Port FAIL Instructions
The software checks the serial ports to ensure any data sent out is looped back as
a direct echo. If the returned data is not the same as that sent, the ports fails. Re-
place the microcontroller board.
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