Epson equity ie q50188015-1 Manual Do Utilizador

Insert the loop-back connector. Then press Y and 

Enter 

to start the check.

The computer checks the port by writing and reading data and control

information, and reports errors for any pins that are faulty.

Use this option to test the functions of the primary serial communications

(RS-232C) port.

To perform the test, you must insert a special loop-back connector into the

serial port so that the computer can check the individual pins of the port.
Contact your dealer if you need a loop-back connector. Note that a different

loop-back connector is required to test the parallel port.

When you select option 11 from the DEVICE LIST menu, you see this
message:

Attach loop-back connector to serial port.

Enter Y to start this check when connector is

attached, or

Enter N to return to the menu.

Insert the loop-back connector. Then press Y and 

Enter 

to start the check.

First, the computer checks the serial port control lines to see that they are

able to change from high to low and vice versa. No messages are displayed

during this part of the test unless an error occurs.

The second test is an echo back check during which the port sends data to

itself in a fixed data format, at all the possible baud rates. When this test

begins, you see this message:

RS232C 

echo back check - at various baud rates

Current baud rate is 

Current test data is 00