Troubleshooting the Test Set

Troubleshooting Procedures

Figure 5-6 The ACTIVE LED Location

If the Self-Test Fails to Run Properly

If the portion of memory holding the self-test program is faulty, the self-test will not run properly. If any of the following conditions occur, it indicates that the A4 HP-IB board is likely to be faulty.

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All LEDs flash briefly, then turn off

All LEDs flash briefly and stay on

The ACTIVE LED turns on too quickly after power on

The ACTIVE LED does not turn on at all

5-10HP 8517B S-Parameter Test Set Manual