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To troubleshoot performance test failures
With the exception of the Quick Confidence test, all functional self tests must pass
before the following table is valid.
Step 1. If the analyzer failed a performance test, compare the failing performance test
to the following table.
If more than one performance test is failing, use the entry that is closest to the
beginning of the table. The table lists the probable faulty assembly or assemblies and
any recommended adjustment or troubleshooting procedure to do before replacing the
assembly. If both an adjustment and a test are recommended, do the adjustment first.
Failing Performance Test Troubleshooting Guide
Failing Performance Test Probable Faulty Assembly
(in order of probabilty)
Adjustment Troubleshooting Test
DC offset
one channel or
channel 1 and 3 or
channel 2 and 4
A1/A2 Input Input dc offset, page 5-10
ADC gain, offset, and
reference, page 5-7
DC offset
all channels
A5 Analog Input dc offset, page 5-10
ADC gain, offset, and
reference, page 5-7
Amplitude accuracy
one channel
A1/A2 Input
A5 Analog
Input dc offset, page 5-10
ADC gain, offset, and
reference, page 5-7
Input and ADC, page 4-51
Four channel, page 4-54
Amplitude accuracy
channel 1 and 3 or
channel 2 and 4
A2 Input Input dc offset, page 5-10
Amplitude accuracy
all channels
A5 Analog Input dc offset, page 5-10
ADC gain, offset, and
reference, page 5-7
Flatness
one channel
A1/A2 Input
A5 Analog
Input dc offset, page 5-10
ADC gain, offset, and
reference, page 5-7
Input and ADC, page 4-51
Four channel, page 4-54
Flatness
channel 1 and 3 or
channel 2 and 4
A2 Input Input dc offset, page 5-10
Flatness
all channels
A5 Analog Input dc offset, page 5-10
ADC gain, offset, and
reference, page 5-7
Troubleshooting the Analyzer Agilent 35670A
To troubleshoot performance test failures
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