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Reports until 16:42, Wednesday 25 April 2012
H2 CDS
david.barker@LIGO.ORG - posted 16:42, Wednesday 25 April 2012 (2697)
Newtonian Noise Front End Installation
Jim, Cyrus, Dave

we installed the Newtonian Noise front end system at the EY end station. It is part of the aLIGO H2 system, using a spare DCU_ID.

The new machine is called h2pemeyaux. It has the IP address 10.201.0.40 and is on the H2 IPMI system.

Its IOP is called h2ioppemeyaux, dcu_id=40. The user model is h2pemeyaux, dcu_id=41 running at 2048Hz. The model reads 44 accelerometers and acquires them to the frame at 1024Hz.

Initially it was found that the duotone signal on the first ADC (chan31) was bleeding into channel 15. Relocating the second ADC to its correct PCI slot has fixed this problem. The IOChassis has a DAC card installed, but the front end does not see this card at all. The DAC card is not immediately needed for the NN project.

The channels in the DAQ are named H2:PEM-EY_AUX_NNARRAY_ACC_n_OUT_DQ when n is in the range 1..44
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