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Entry  Wed Mar 27 14:22:35 2024, JB, NH, Installing FEE64s of DSSSD2 14x
    Reply  Thu Mar 28 09:18:53 2024, TD, Installing FEE64s of DSSSD2 
Message ID: 553     Entry time: Thu Mar 28 09:18:53 2024     In reply to: 552
Author: TD 
Subject: Installing FEE64s of DSSSD2 

Some additional checks

- check 'top hat' electrical isolators are correctly installed at each of the 4x mounting points of the AIDA snout assembly 

- check snout is electrically isolated with respect to AIDA support assembly/stand, bPlas PCBs/cabling/ground/drain wires and BB7

- check LK1 installed aida02 or aida04 *and* aida06 or aida08 ( I assume these are the n+n Ohmic FEE64s? )

- check LK3 installed bottom, middle p+n junction FEE64s ( i.e. LK3 installed on 2 of 16 FEE64 adaptor PCBs )

- check FEE64 power cables are paired correctly, e.g. aida02 & aida04, aida01 & aida03 etc. Remember that the numbering of the power cables at the FEE64 PSUs may no longer correspond to which FEE64 is actually connected to that cable

- check test  and test - cable daisy chains are removed

- check ground cabling attachment to Lemo 00.250 connectors is tight - they have tendency to loosen with handling

Quote:

Mounted on frame:

DSSD 1 (Upstream) :     3208-2/3208-5/3208-8
DSSD 2 (Downstream): 3208-3/3208-21/3208-22

Current mapping has been redone for better management.

AIDA - FEE Mapping
DSSSD 1 DSSSD2
FEE MAC FEE MAC
aida01 41:ba:8a aida06 41:05:15
aida02 41:f6:b7 aida07 41:f6:5a
aida03 41:d8:21 aida08 41:d7:cd
aida04 41:a0:71 aida10 41:d0:0E
aida05 41:cf:ac aida13 41:d8:2b
aida09 41:ee:10 aida14 42:0d:15
aida15 41:b4:0c aida11 41:EE:0f
aida12 41:ba:89 aida16 41:f6:ed

 

Going to try optimising noise now.

 

DHCP updated

new ASIC settings: 2024Mar27-11.25.32 - 16 FEEs (2,4,6,8 n+n, rest p+n)

New layouts: /home/npg/LayOut/GSI_Triple_S100

New layout.txt

 

Firmware of aida11 updated from 0xea40704 to 0x3350706

 

Temps GOOD fig 5

Rates fig 6, 7

Check adapter alignment aida14 and aida16

 

bPlas left/right cables are not insulated and shorting to the snout

Logs on nnpi1 archived and deleted, start again
All 16 FEEs are showing USB logging connectivity and can be monitored with Pi_Monitor

From waveforms aida08 and aida16 are quite unhappy. The rest don't seem too bad. DSSSD 1 is much quieter than it was before!

White Rabbit Analysis: aida02 has lots of WR error counter, HDMI reseat needed
aida09-12 have no WR timestamp, the cable to the MACB is bad or the MACB is bad.
Not needed to fix right now (for noise testing)

Turn off bPlas
We see the noise drop a lot

 

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