IBM EtherLink XL manual Running the Echo Test, Eeprom Fifo

3Com NIC Diagnostics Program B-9

7Click Start in the Self-Test area. The following tests run in sequence:

■Register Access

■EEPROM

■FIFO

■Ethernet Core Loopback

■Encoder/Decoder Loopback

■Interrupt

You can click Stop to stop the tests. Otherwise, the tests run continuously to completion.

Click the Help button to display help for this screen. Click the question mark (?) at the top of the screen, drag it to a test, and click. The pop-up box displays information about the selected test and what to do if the test fails.

Running the Echo Test

The echo test tests the 3C905B-TX adapter’s ability to transmit and receive data while on the network.

You need two PCs with 3Com adapters or IBM 10/100 Fast EtherLink XL Adapters by 3Com installed to run an echo test: one PC to send data and one PC to receive data.

CAUTION: Running the echo test while connected to an active network can cause intermittent failures. To avoid this, connect to an inactive network on which only the PC being tested is operating.

To run the echo test, follow these steps:

1Make sure that the 3C905B-TX adapter is installed in the sending PC and connected to the network (Chapter 2) and that the network driver is installed

(Chapter 3).

2Install a 3C905B-TX adapter in another PC (the echo server), connect it to the network, and install the network driver.

The echo server PC is the responding PC.