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Environmental Monitoring (Environmental Monitoring)

Tringali, Bersanetti, Carbognani - 19:21 Thursday 10 July 2025 (67258)

Test of NEB and WEB automated acoustic injections

Thanks to Diego's help, today we tested the code for performing acoustic injections at the terminal buildings via the ENV_MAIN Metatron node. Figures 1–2 show the colored noise sent to the DAC channels at CEB, NEB, and WEB (amplitude = 0.04, duration = 120 s, freq. range = 8-2000 Hz).
Unlike at CEB, the loudspeakers at the terminal buildings are not yet connected to the smart PDUs. However, the on/off switching process of the dedicated sockets was triggered by the code and worked as expected.

Below are the PDUs and the socket used:

WEB: PDU_WE_ALS_NNC, socket 3
NEB: PDU_NE_ALS_NNC, socket 3

Powering the loudspeakers via smart PDUs at the terminal buildings will be implemented in the coming weeks.

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Comments to this report:

Tringali, Paoletti, Loche - 15:41 Monday 14 July 2025 (67294)

We have tuned the amplitude sent to the DAC channel for the NEB automated acoustic injections.
The value of the amplitude parameter in the ini.file is Amp= 0.1 (purple curve)
The same should be applied to WEB automated acoustic injections.

We have left the loudspeaker connected to the PDU and ready for automated injections.

VPM process: AcousticInjectionNEB

Configuration parameter: /virgoData/NoiseInjections/MagneticInjectionsO4/EnvSwepts/config/ConfigurationAcousticColoredNEB.ini

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