Service manual

Chapter 2 65
Troubleshooting
Perform Measurements
1. Chapter Title
2. Troubleshooting
3. Chapter Title
4. Chapter Title
5. Chapter Title
Popcorn Noise
Measurement with
E5041A
Measurement data is
unacceptable
If popcorn noise data measured by the
E5041A is wrong, replace the
E5041A. If the E5041A replacement
does not solve the problem, check
unwanted noise source generated
within the measurement system and
remove it.
All measurement
Items
Measurement data is
not returned
If the status LED on the VXI module
lighting is amber, replace the module.
If all status LED on the VXI modules
lighting is green, verify the index
signal from the ‘J19’ connector on the
spinstand controller (DMM). If the
index signal is incorrect, refer to
“Troubleshooting” chapter of
spinstand service manual. If
measurement data still does not
return, replace the E5035B and
E8491B in sequence.
Table 2-11 Trouble Isolation Hints