Output Amplifier Tests; Overall Tests, Static; Overall Tests, Dynamic - HP 8112A Operating, Programming And Servicing Manual

Output Amplifier Tests

Overall Tests, Static

Overall Tests, Dynamic

E21
Offset generator is unable to produce positive offset. Possible failure
in Output amplifier or offset control circuit U17 to U19, U20 to U22,
or U27. See Chapter 10.4.
E22
Offset generator is unable to produce negative offset. Possible failures
as E21.
These tests check pulse generation using the level check circuits.
E31
When software triggered (low), a fixed mode negative pulse is not
detected. Possible failure in signal transfer between:
Period generator U200
n
Delay generator U220
n
Width generator U240
n
Slope generator U301
n
Shaper IC U401
n
and output pre-attenuator and amplifier. Refer to Chapters 10.5,
10.3 and 10.4.
E32
When software triggered (low), a fixed mode positive pulse is not
detected. Possible failures as in E31.
E33
When software triggered (high), a fixed mode negative pulse is not
detected. Possible failures as in E31.
E34
When software triggered (low), a linear mode negative pulse is not
detected. Possible failures as in E31.
These tests check the accuracy of the output pulse rise and fall times
in normal output mode.
E35
When software triggered (high), rise time of 1 ms (Range 6) out of
limits. Possible faults in leading edge slope control circuit U12, U14
or U302. See Chapter 10.5.
Instrument Overview and Troubleshooting Guide
10.1-7