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AdV-COM (AdV commissioning (1st part) )
flood - 10:46 Wednesday 26 July 2017 (38842) Print this report
Comment to 29.2 Hz and 92Hz Noise Elimination (38814)

It has been confirmed the 29.2Hz line is gone from Hrec (figure 1). The 92 Hz bump was previously confirmed to have disappeared (38738) we just turned on the fan yesterday and observed the change in enviromental sensors to verify the source then it was switched back off. So, there is not a recent lock with the fan on for comparison, but none the less the 92Hz region is flat. Yesterday the operator recieved a flag for the ENV_WE_CT_ACC_Z being out of it's thrshold. The top right of figure 2 shows the significant reduction in the overall noise when the scroll pump was switched off, which resulted in the flag.

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