Agilent Technologies 45A, 46A, 54835A manual To troubleshoot the acquisition system

Chapter 5: Troubleshooting

To troubleshoot the acquisition system

12Under Integrated Peripherals, change these settings:

a	Onboard FDD Controller	Disabled
b	Onchip IDE second channel	Disabled

When you are finished, press Esc to exit the menu.

13Press F10 to save and exit the setup. Type “Y” to save changes.

To troubleshoot the acquisition system

This procedure will help you isolate problems to the assembly or firmware level when the built- in Self Test routine shows acquisition system failures. Using this procedure, you can determine whether one or more of the attenuator assemblies, one or more of the A/D hybrids, the Probe board, the acquisition interface assembly, or the entire acquisition assembly is at fault. If you cannot isolate the fault to attenuator(s) or A/D hybrid(s), you must replace the entire acquisition assembly, including the attenuators and hybrids.

A built-in counter keeps track of the number of times the attenuator contacts have been opened and closed. This is a direct indicator of the usage level of the attenuator and is useful for scheduling preventative maintenance. When you replace the acquisition assembly with a factory rebuilt exchange assembly, you must record the contact closure information for each channel, using the labels attached to each attenuator. If you later exchange the acquisition assembly, Agilent Technologies uses this information to determine when to replace the attenuators to insure quality of future exchange assemblies.

Determining the Acquisition Contact Closure Count

1Select Self Test from the Utilities menu.

2Check the "Service Extensions" check box.

3Select Attenuator Contacts from the Self Test drop down list box.

4 Click Start Test to run the test.

The accumulated contact closure information will be displayed on screen for each channel. Write this information on the label attached to each attenuator before returning the failed acquisition assembly.

Isolating Acquisition Problems

The Infiniium acquisition system has been designed to work with firmware selftest routines, which provide pass/fail indications for each subsystem. Use the Passed/FAILED information and the trouble isolation chart to determine the appropriate assemblies to replace.

To run a particular test for troubleshooting, do the following:

1Select Self Test from the Utilities menu.

2Check the "Service Extensions" check box.

3Select the desired test from the Self Test drop-down list box.

4 Click Start Test to run the test.

Run the tests in the following order, as shown by the flowchart.

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