Starting WiFi and RS485 tests

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UTC: 2025-04-30 07:41:34.884054 UTC
GPS: 1430034112.884054

- Powered Up Mini PC and External box elements

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UTC: 2025-04-30 07:51:12.235152 UTC
GPS: 1430034690.235152

- Started WiFi transmission
- Short test just to check WiFi is still working

UTC: 2025-04-30 07:52:14.826912 UTC
GPS: 1430034752.826912

- Stopped transmission

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UTC: 2025-04-30 07:56:41.061210 UTC
GPS: 1430035019.061210

- Started RS485 transmission
- Short test just to check RS485 is still working

UTC: 2025-04-30 07:58:14.682536 UTC
GPS: 1430035112.682536

- Stopped transmission

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UTC: 2025-04-30 08:04:49.521594 UTC
GPS: 1430035507.521594

- Long WiFi transmission
- Bandwidth: [ 1] 0.0000-1200.1720 sec 3.51 GBytes 25.1 Mbits/sec

UTC: 2025-04-30 08:24:47.005460 UTC
GPS: 1430036705.005460

- Stopped transmission

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UTC: 2025-04-30 08:28:14.698867 UTC
GPS: 1430036912.698867

- Long RS485 transmission

UTC: 2025-04-30 08:39:51.495612 UTC
GPS: 1430037609.495612

- Stopped transmission

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UTC: 2025-04-30 08:46:39.856154 UTC
GPS: 1430038017.856154

- WiFi transmission
- BW: [ 1] 0.0000-900.1361 sec 2.55 GBytes 24.3 Mbits/sec

UTC: 2025-04-30 09:03:00.986247 UTC
GPS: 1430039024.986247

- Stopped transmission

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UTC: 2025-04-30 09:03:26.986247 UTC
GPS: 1430039024.986247

- RS485 transmission

UTC: 2025-04-30 09:18:28.682049 UTC
GPS: 1430039926.682049

- Stopped transmission

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UTC: 2025-04-30 09:22:19.040208 UTC
GPS: 1430040157.040208

Power Shutdown
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Analysis of offline data will follow

Comments to this report:

salvador - 17:28 Wednesday 30 April 2025 (66669)

As a first look at fig.1, the tests did not seem to have particularly affected the BNS range.
The range is dropping significantly even outside the periods of injections.

Images attached to this comment

dattilo, tomelleri - 18:22 Wednesday 30 April 2025 (66672)

In accordance with what was discussed today at the daily meeting, at about 15:30 UTC we unplugged the IFAE smart PDU (fig1) and the 32-pin connector of the WE tower flange (fig2).

Images attached to this comment

bersanetti - 18:32 Wednesday 30 April 2025 (66675)

What was discussed at the daily meeting today was to perform the activity after the end of the previous one, which was still ongoing and was delayed because of the unlock caused by this intervention.

dattilo - 19:18 Wednesday 30 April 2025 (66676)

Concerning the unlock:
it happened at 15:30 UTC, while the unplug was done at 15:33 (time that appears in the data of the photo), taking advantage of the fact that the ITF was already unlocked.

seglararro - 17:23 Wednesday 07 May 2025 (66734)

I checked the spectrograms of the usual set of ENV channels (MAG, RF) and Hrec, and a broader range of times for the BNS range. We can not identify visually any feature that repeats itself (ON-OFF tests were done twice) in the spectrograms nor in the BNS range. Yet, there is a not negligible BNS range drop, although at first sight not connected with the tests (as previously said in this thread). Complementarily, the temporal evolution of the coherence between the ENV channels (serving as witness) and hrec was obtained, although we note that no frequency overlap is expected (WIFI and RS485 device frequencies are at MHz). No feature is observed in these plots either. These plots were shown at the SSM meeting of 6th May.

Discussing the results with F. di Renzo and the ENV team, it has been proposed to install a witness of these devices, to potentially witness the stability of the connection, etc. This is being under consideration by the IFAE engineers.

Images attached to this comment