Interpolator failed, Timebase failed | Agilent Technologies 45A

Chapter 5: Troubleshooting

To troubleshoot the acquisition system

KInterpolator failed

Replace the acquisition assembly when this test fails. Before you replace the acquisition assembly with a factory rebuilt exchange assembly, record the contact closure information for each channel onto the labels attached to each attenuator. Agilent Technologies uses this to determine when to replace the attenuators to insure quality of future exchange assemblies.

LTimebase failed

MAttenuator contact warning

The oscilloscope software monitors closures for each set of attenuator contacts and accumulates the closure count. The set of contacts with the highest number of closures is the one reported for the channel. When the accumulation for any set of contacts for a channel reaches two million closures, this test displays a warning message. This warning is not an indication of attenuator failure. This warning does advise you that the attenuator is near the mean of its range of reliable usage. You should plan your maintenance strategy based on this contact closure information and your application. For example, in an automated test application, you might want to replace attenuators as soon as the warning appears; this will help prevent costly production line stops. In a bench test application, you might choose to take the warning as an advisory only, and continue to monitor the oscilloscope’s measurement accuracy. You can then replace attenuators when measurement accuracy changes dramatically or when a failure occurs.