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AdV-DAQ (Data collection)
masserot, zaza - 8:54 Wednesday 12 August 2026 (69553) Print this report
DAQ: ADC7674_SN13 in the TCS room unreachable

Since 026-08-12-01h12m40-UTC the ADC7674_SN13(TCS_ADC_Moni0), located in the TCS room, is unreachable via the Tolm network .

As consequence, the follwing servers became blue in the VPM interface: SUSP_SBE_Tpro, SUSP_Fb, TCS_CEB  and PyTCS 

Below the report  of the SUSP_Fb Tolmframebuilder, collecting the data sent by the TSC_ADC_Moni0 :

2026-08-12-01h12m37-UTC>WARNING-[TolmFrameBuilder::ControlMerging] frame: 1470532375.600000000: merging is triggered on timeout (internal 1470532375.962515050 > max 1470532375.960000000)
2026-08-12-01h12m37-UTC>WARNING-[TfbSubFrame::Fill] GPS: 1470532375.600000000 - Source TCS_ADC_Moni0_0: 452/2000 missing packet(s), 0 data break(s) (missing data are at the end of the vector)
2026-08-12-01h12m38-UTC>INFO...-[TfbSourceManager::Clean] source TCS_ADC_Moni0_0 (1595:v05) has stopped -> waiting for data...
2026-08-12-01h12m38-UTC>INFO...-[TfbSourceManager::Clean] source TCS_ADC_Moni0_Monitoring (1601:v01) has stopped -> waiting for data...
2026-08-12-01h12m38-UTC>INFO...-[TfbSourceManager::Reporting] Sources reporting: / nSrc: 57, missing(2): TCS_ADC_Moni0_0, TCS_ADC_Moni0_Monitoring
2026-08-12-01h12m38-UTC>INFO...-CfgReachState> Active(Active) Ok

The faulty ADC7674 SN13 is located in a VME 21slots crate with the 3 others TCS ADC7674 boards.

The 3 others ADC7674 data are correctly received, so someone should check first the optical transceivers at boths sides

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masserot, zaza - 10:00 Wednesday 12 August 2026 (69555) Print this report

Cecilia fixed the issue by making the investigations and by replacing the fauly optical transceiver at the ADC7674 SN23 level  .

Operation performed at  2026-08-12-07h28m38-UTC

 
zaza, kraja, masserot - 11:50 Wednesday 12 August 2026 (69562) Print this report

We went to investigate in TCS room and DAQ room and found the following:

TSC room ADC7674_SN13 link0 : TX light red instead of green

DAQ room , Rack 15, MxDx SN12 link21 : RX arrow (DOWN arrow) ligh off instead of on

Since we already were in DAQ room, we first unplugged/replugged the fiber and tried to change the SPF connector, with no results. Moving on to TCS room, we changed the SPF connector with a spare one, the TX light went back to green and the data were restored shortly after.

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