104 CHAPTER 7: TROUBLESHOOTING FOR WINDOWS 3.X
Figure 60 Assembling a Loopback Plug
Starting the Group 2 Test
Follow these steps to run the Group 2 test on either the
3C509B-TPC or 3C509B-COMBO NIC:
1 Connect the loopback plug to the round BNC
connector on the NIC.
2 Start the Configuration and Diagnostics Program,
as described in “Starting the DOS Configuration and
Diagnostics Program” on page 102.
3 From the Test menu, select Test Setup.
4 Enable the Group 2 test. Select OK and press Enter.
5 Go to the Run Tests dialog box to start the tests.
6 After the test is completed:
a Exit the Configuration and Diagnostics Program.
b Remove the loopback plug.
Running the Group 3 Test
The Group 3 test is the Echo Exchange Test. It tests to see if
the NIC can transmit and receive data while connected to
the network. If you have successfully run the Group 1 and
Group 2 tests, a failure in the Group 3 test usually indicates
a cabling, hub, or network problem.
CAUTION: Do not use an active network to run the
Group 3 test.
50Ω
Terminator
50Ω
Terminator
T connector
Book Page 104 Monday, June 7, 1999 8:55 AM
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