Serial port
The serial port actions conduct internal loopback testing on up to 10 serial
ports. These tests place the serial port in an internal loopback mode so that
the values written to the port can be read back. This suite of actions verifies
that all registers contain valid values.
Prerequisites for testing the serial port
None.
Actions
Use the following actions to diagnose the serial port:
- Perform External Registers Test
Performs an external loopback action on the serial port register. This test
also verifies that all of the registers contain valid values.
- Perform External Send/Receive Test
Writes 256 characters to the port at various baud rates and then reads the
characters back to compare the characters as they loop through the loopback
adapter.
- Perform Internal Registers Test
Performs an internal loopback action on the serial port register. This test
also verifies that all registers contain valid values.
- Perform Control Registers Test
Performs an internal loopback action on the serial port control signals. This
test also writes a set of patterns to the control registers and then reads
back the corresponding values through the internal loopbacks.
- Perform Internal Send and Receive Test
Writes data to the serial port at several baud rates and reads the data back
through the internal loopback for comparison. All errors are reported in the
action log.
Results
The Results field displays the results of the action and provides detailed
information about resolving the problem. You might need to use the documentation
that comes with your server for information about correcting a failed device.
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