Preparing for Operation 2 Testing and Troubleshooting

Problem

The Ethernet Parallel-to-LAN Adapter is not responding

-or-

Mouse or Keyboard is not responding, or software behaves abnormally.

Unable to verify communications with an instrument.

General Protection Faults.

Changed instruments on the network and the new instrument do not respond.

Table 2-6. Troubleshooting

Discussion

If you connect the Ethernet Parallel-to-LAN Adapter to the host computer while the host computer is powered on, the adapter will not initialize correctly. This can cause a variety of unusual conditions. To resolve, power off the computer, check the adapter installation, and restart the computer. Check if the mouse interface is using the same IRQ as the parallel port.

When you select an instrument from the Network list (using Setup Comm Config) to verify communications, you may need to try verification a second time. If this does not clear the problem, see Appendix I for more information.

Acknowledge any General Protection faults, then restart Windows. A General Protection fault can cause unpredictable operation of Windows applications.

If you replace an instrument on your network with the new instrument duplicating the old instrument IP address (general network) or BCN (isolated network), the new instrument may not work.

This occurs because the old and new instruments have different Ethernet addresses. When you boot the host computer, the network software links the instrument’s IP address and the instrument’s Ethernet address (fixed for each instrument). If you change instruments but reuse the IP address (general network) or BCN (isolated network) then the changed instrument may not respond because it has the "wrong" Ethernet address. The solution is to reboot the computer to establish the correct link between the addresses.

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Fluke 2640A, 2645A user manual Problem, Troubleshooting Discussion

2645A, 2640A specifications

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