Aida02 is down. Contacted Nick.

The rest looks stable, see screenshots.

10:53 CEST (NH): Rebooted aida02 via telnet
Resync ASIC clocks
All system wide checks look ok
ASIC threshold => 0x14

Go > All 16 writing to merger, looks OK

aida02 went down again 11:35 CEST
Rebooted with same procedure and is back again

Checks 08:00-08:30

Screenshots are attached and everything looks OK.

23.36 Analysis of data file R17_34 - attachment 1
      max deadtime c. 1% (aida02)
      no timewarps

23.38 DSSSD bias & leakage current OK - attachment 2

      FEE64 temperatures OK - attachment 3
       aida02 ASIC temp - known fault

      ADC data item stats - attachment 4

      per FEE64 Rate spectra - attachment 5

      Merger etc - attachment 6

01.03 DSSSD bias & leakage current OK - attachment 7

      FEE64 temperatures OK - attachment 8
       aida02 ASIC temp - known fault

      ADC data item stats - attachment 9

      per FEE64 Rate spectra - attachment 10

      Merger etc - attachment 11

03.06 DSSSD bias & leakage current OK - attachment 12

      FEE64 temperatures OK - attachment 13
       aida02 ASIC temp - known fault

      ADC data item stats - attachment 14

      per FEE64 Rate spectra - attachment 15

      Merger etc - attachment 16

05.04 DSSSD bias & leakage current OK - attachment 17

      FEE64 temperatures OK - attachment 18
       aida02 ASIC temp - known fault

      ADC data item stats - attachment 19

      per FEE64 Rate spectra - attachment 20

      Merger etc - attachment 21

07.29 DSSSD bias & leakage current OK - attachment 22

      FEE64 temperatures OK - attachment 23
       aida02 ASIC temp - known fault

      ADC data item stats - attachment 24

      per FEE64 Rate spectra - attachment 25

      Merger etc - attachment 26

First checks of shift. All looks ok.

Screenshot of HV, temps, rates, Merger attached. Attachments 1-4.

Screenshots of all spectrum Layout IDs taken before zeroing at 16.35. (Attachments 5-12)

checks at 16.00 - merger has crashed - aida01 dropped out  - Tom tried to stop DAQ but got an error. Restart servers restarted at 16.09 

Reset 01, restarted DAQ, and restarted as R16.

16.15 Data seems to be collected but spectra not being incremented in aida01. Timestamps look to be out of sync. Tom restarting aida01 again.

Did not fix, power cycle all FEEs - all spectra reset. aida3,6,11,12,14,15 wont calibrate adcs so wont have waveforms

RUN17 STARTED 16.51|

 HV, temps, rates, Merger looks ok 17.00. Plots saved as attachments 13-16.

20.47, all looks ok - see attachment 17-20. Rates are higher in attachment 20 than in attachment 2 from start of shift

21.59 aida02 (link aida1) stopped taking data and dropped out of the merger (see attachment 21). Came back to life after about 15 miutes. Tom logged in remotely to investigate. Seems to be ok. see attachment 22 for timestamps

22.48 - things apear ok. (Attachments 23-26) 

Attachment 1 - per DSSSD LEC e_p versus e_n (20keV/channel)

Attachment 2 - per DSSSD HEC m_p versus m_n 

Attachment 3 - per DSSSD HEC x versus y (I really do need to sort out the mapping!)

Attachment 4 - per DSSSD HEC e_p versus e_n (20MeV/channel)

Attachment 5 - per DSSSD per pixel HEC-HEC time (4.096us/channel)

Attachment 6 - per DSSSD implant/decay event rates (262.144us/channel)
               showing beam spill cycle

Attachment 7 - colours/contour levels for all 2D spectra

09.14 aida04 stopped producing data - system console output - attachment 1

It is not clear (to me at least) whether the cause is radiation-induced single event upsets or
the start/stop of LN2 fills.

Nor is it clear why the FEE64 stops
- WR timestamp error (data link to Merger blocks)
- AIDAExecV10 fails
- ?

rebooted aida04

DAQ RESET/SETUP etc cycle for all FEE64s

10.03 successful restart 
      current data file R15

00.15 Data link to MBS was closed by MBS - reason(s) unknown
      NH restarted MBS receiver and data transfer restarted

01.34 DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats OK - attachment 3

      Merger, TapeServer etc - attachment 4

04.36 DSSSD bias & leakage current OK - attachment 5

      FEE64 temperatures OK - attachment 6

      ADC data item stats OK - attachment 7

      Merger, TapeServer etc - attachment 8

07.54 data storage to local disk enabled
      file aida-gsi:/TapeData/S100_alpha/R14_

09.36 DAQ continues, current data file R14_46

      168Er setting

      DSSSD bias & leakage current OK - attachments 9 & 10
      leakage current DSSSD#1 ramping and cycling with beam spills

      FEE64 temperatures OK - attachment 11

      System wide checks OK *except* WR/FPGA errors - attachments 12-13

      WR timestamps - attachment 14
       aida04 out of seq

      ADC data item stats - attachment 15
       high rates observed all FEE64s beam on, beam off rates OK

      per FEE64 Rate spectra - attachment 16

      per FEE64 1.8.L spectra - attachments 17-18

      per FEE64 1.8.W spectra - attachments 19-20

      per FEE^4 1.8.H spectra - attachments 21-22
   
      Merger, TapeServer etc - attachments 23-25
       data rates to c. 10Mb/s beam on


09.55 aida04 rebooted - https://elog.ph.ed.ac.uk/DESPEC/586

10.01 DAQ restarted
      data file R15

      ADC data item stats - attachments 26-27
       large variation in rates beam off/on

c. 10.30 beam off (for new FRS setting?)


11.25 analysis of data files R14_19 (beam ON) and R15_24 (beam OFF) - attachments 28-29

      For beam ON max deadtime c. 11% (aida04), beam OFF max deadtime c. 0.1% (aida04)

      Zero timewarps observed

      Notice large # of PAUSE/RESUME data items for aida03 & aida04 presumably due to additional overhead of processing the time machine scalers 

12.35 Beam off

      DSSSD bias & leakage current OK - attachment 30
       Can observe beam spill structure in DSSSD leakage currents - now slowly recovering with beam off

      FEE64 temperatures OK - attachment 31

      ADC data item stats OK - attachment 32

      Merger, TapeServer etc - attachment 33

12.55 New ASIC settings 2024Apr22-12.55.38
       *all* discs disabled to reduce load on aida04
       slow comparator 0x14

      BNC PB-5 settings (since yesterday evening)

      Amplitude 10.0V
      Attenuation x10
      tau_d 1ms
      Frequency 2Hz
      Tail pulse
      Polarity +


13.46 all histograms & stats zero'd

13.48 Beam off
      per FEE64 Rate spectra - attachment 34
       2Hz pulser to p+n FEE64s

      per FEE64 1.8.W spectra - attachments 35-36
       p+n FEE64 threshold = 6000 to capture pulser events
       n+n FEE64 threshold = 8000 to capture noise

      per p+n FEE64 1.8.L spectra - attachments 37-38
       common x/y-scale - peak height proxy for peak width
       aida09 pulser peak width 57 ch FWHM ~40keV FWHM ( 5 x sigma ~ 85keV )

14.28 168Eu setting (check only - setup still in progress)

01.35 DSSSD bias & leakage current OK - Grafana - attachment 1

      FEE64 temperatures OK - attachment 2
 
      ADC data item stats OK - attachment 3

      Merger OK - attachment 4

04.05 DSSSD bias & leakage current OK - Grafana - attachment 5

      FEE64 temperatures OK - attachment 6
 
      ADC data item stats OK - attachment 7

      Merger OK - attachment 8

08.20 DSSSD bias & leakage current OK - Grafana - attachment 9

      FEE64 temperatures OK - attachment 10
 
      ADC data item stats - attachment 11
       increased rates observed esp. DSSSD#2 n+n

      Merger etc - attachment 12
      rate increased x2 cf. overnight

      WR timestamp - attachment 13
       aida03 out sequence

09.25 MBS data relay restarted

      Merger data links - attachment 14
       aida03 rate zero

      per FEE64 1.8.W spectra - 20us FSR - attachments 15-16

      per FEE64 Rate spectra - attachment 17
      increased rate for DSSSD#2 n+n FEE64s in particular

      MIDASsort online analysis - attachments 18-19
      per DSSSD e_front versus e_back for LEC (20keV/channel) and HEC (20MeV/channel)
      observe light ions (LEC) c. 2MeV
      observe low rate of high energy ions (HEC) c. 600MeV
      similar energies in both DSSSDs for LEC and HEC implying both types of event have range >> 2mm Si


10.09 DAQ STOP
      aida03 does not respond - reboot aida03

      DAQ RESET/SETUP etc     

      Synchronise ASIC clocks
      All system wide checks OK *except* FPGA errors

      Data transfer disabled
      Histograms & stats zero'd
      DAQ GO

      Merger restarted 

      Data transfer enabled
      DAQ GO

      WR timestamp OK - attachments 20-21

      ADC data item stats OK - attachment 22
       rates status quo ante
  
      Merger etc OK - attachment 23


14.58 DSSSD bias & leakage current OK - Grafana - attachment 24

      FEE64 temperatures OK - attachment 25

      ADC data item stats OK - attachment 26

      Merger etc OK - attachment 27

18.13 DSSSD bias & leakage current OK - Grafana - attachment 28

      FEE64 temperatures OK - attachment 29

      ADC data item stats OK - attachment 30

      Merger etc OK - attachment 31


20.30 Primary c, few kHz 170Er beam to S4 - upstream s/steel flange removed
      Start of stopping range calibration in the implantation stack - currently ion appear to be stopping in DSSSD#1 (upstream)


      Decay and implant events as function of time showing spill structure - attachment 32

      per DSSSD e_front versus e_back (HEC, 20MeV/channel) - attachment 33

      per DSSSD x versus y hit pattern (HEC) - attachment 34
       mapping to be configured but clear ions are mostly implanted in centre of DSSSD#1 

      2D colour/contour levels - attachment 35

      per DSSSD m_front versus m_back (HEC) - attachment 36

      per DSSSD per pixel HEC-HEC time (4.096us/channel) - attachment 37

23.44 aida02 has stopped running
      DAQ STOP
      aida02 rebooted

      Data transfer disabled

      DAQ RESET/SETUP 

      Synchronise ASIC clocks
      All system wide checks OK *except* FPGA errors

      Histograms & stats zero'd
      DAQ GO

      Merger restarted 

      Data transfer enabled
      DAQ GO







        


        

Note 40kBq 60Co source placed on bottom surface of snout centred on bPlas detectors and DSSSDs

18.50 Primary beam 750MeV/u Er to S4
      Primary beam stopped by flange (5cm s/steel in position upstream of implantation stack)

      Observe c. 2MeV dE peak in AIDA DSSSD#1 and DSSSD#2 using MIDASsort online analysis - attachment 1



21.50 Primary beam 1000MeV/u Er to S4 - attachment 2

      per DSSSD e_front versus e_back, 20keV/channel
      DSSSD #1 x & y -axis projections

10.50 Overnight stats - attachment 3
      Primary beam ?
      per DSSSD e_front versus e_back, 20keV/channel
      DSSSD #1 x & y -axis projections
      note multiple dE peaks observed in both DSSSDs

S100 ADC offsets using pulser walkthrough data from data files R12 & R13

ch = channel + ( module * 64 ) + ( range * 2048 )

adc_data( ch ) = INT( RSHIFT( ABS( adc_data( ch ) - 32768 ), 3 ) - offset( ch ) + 0.5 )




per p+n FEE64 ADC spectra (aida01-aida16 *not* aida02, aida04, aida06 & aida08) - attachments 1-12

Note common x & y-scales - peak height proxy for peak width

aida09 1.8.L (s520) pulser peak width 7 ch FWHM (~40keV FWHM)




per n+n FEE64 ADC spectra (aida02, aida04, aida06 & aida08) - attachments 13-16

Note common x & y-scales - peak height proxy for peak width

aida02 1.8.L (s72) pulser peak width 16 ch FWHM (~88keV FWHM)




ADC offset analysis

/home/npg/td/Calibration/offsets /home/npg/td/S100/R12-R13 50 1024 20 5


First pass sort variables ( ADC offsets, FEE64 configuration, LEC & HEC equal energy cuts ) - attachment 17

Note 60Co source (current activity c. 43kBq) was installed yesterday evening - assume it is positioned on the bottom side of the snout as per the other sources used this week/

04.17 DSSSD bias & leakage current OK - Grafana - attachment 1

      FEE64 temperatures OK - attachment 2
       aida02 ASIC temp known to be u/s

      ADC data item stats - attachment 3
       all FEE64 slow comparators 0x14 from yesterday's pulser walkthroughs

      per FEE64 Rate spectra - attachment 4

      Merger etc - attachment 5


11.24 DSSSD bias & leakage current OK - Grafana - attachment 6

      FEE64 temperatures OK - attachment 7
       aida02 ASIC temp known to be u/s

      ADC data item stats - attachment 8
       all FEE64 slow comparators 0x14 from yesterday's pulser walkthroughs

      per FEE64 Rate spectra - attachment 9

      Merger etc - attachment 10


17.50 DSSSD bias & leakage current OK - Grafana - attachment 11

      FEE64 temperatures OK - attachment 12
       aida02 ASIC temp known to be u/s

      ALl syhstem wide checks OK *except* WR/FPGA errors - attachments 13-14

      WR timestamps OK - attachment 15

      per FEE64 Rate spectra - attachment 16

      per FEE64 1.8.W spectra - 20us FSR - attachments 17-18

      Merger, TapeServer, Data Links - attachments 19-20
       no data storage

      ADC data item stats - attachment 21
       all FEE64 slow comparators 0x14 from yesterday's pulser walkthroughs


18.01 Grafana alerting shows detail of DSSSD leakage current and S4 temperature variations over time - attachment  22
       DEGAS LN2 fill cycle every 6h 10.00 - 16.00 - 22.00 ... etc

https://despec-vm-01.gsi.de/grafana/d/tHRVJYfGz/aida-alerting?orgId=1

12.00 Replaced AIDA ASIC mezzanine of aida01 to fix issue with asic #3

      During replacement the HDMI connector of the adjacent FEE64 aida09 became disconnected from the FEE64 PCB
      aida09 ( MAC ee:10 ) replaced (MAC 41:cf:ad )

      AIDA FEE64 adaptor PCBs for aida01, aida14 and aida09 disconnected and re-connected during this process 

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temps OK - attachment 2
       *except* aida02 ASIC temp - known fault

      System wide checks OK *except* WR/FPGA errors - attachments 3-4

      WR timestamps OK - attachment 5

      ADC, DISC, PAUSE, RESUME and correlation data stats - attachments 6-10
       ADC data items 10/16 < 20k, max 143k

      per FEE64 Rate spectra - attachment 11

      per FEE64 1.8.W spectra - 20us FSR - attachments 12-13


15.10 Synchronise ASIC clocks
      Re-calibrate ALL ADCs 

      ASIC settings 2024Mar27-11.25.32

      Changes ( https://elog.ph.ed.ac.uk/CARME/499 )

       IBias LF feedback from 0xf to 0x8
       Diode link threshold from 0xbf to 0xca

      New ASIC settings saved as 2024Apr19-15.22.49

      All FEE64 slow comparators -> 0x14

      Data file S100_alpha/R12

      Pulser ealkthrough (test +)

      BNC PB-5 settings
 
      Amplitude 10.0-1.0V @ 1.0V step
      Attenuation x10
      Frequency 25Hz
      Polarity +
      Tail pulse
      tau_d 1ms

16.35 DAQ ends OK file S100_alpha/R12_24

      per p+n FEE64 1.8.L spectra - attachment 14
       aida09 pulser peak width 54 ch FWHM 

17.38 Data file S100_alpha/R13

      Pulser walkthrough (test -)

      BNC PB-5 settings
 
      Amplitude 10.0-1.0V @ 1.0V step
      Attenuation x10
      Frequency 25Hz
      Polarity -
      Tail pulse
      tau_d 1ms

18.43 DAQ ends OK file S100_alpha/R13_20

      per p+n FEE64 1.8.L spectra - attachment 15

18.55 Current status

      FEE64 power ON
      DSSSD bias ON

      All FEE64 slow comparator 0x14

      DAQ going -> Merger -> TapeServer (no storage mode) -> MBS ( but data stream not yet being read by MBS )


To Do

- S4 currently closed/controlled access for FRS startup

If we have access to S4 tomorrow

- switch test - to test + ( not critical )
- test AIDA interlock 
- further alpha background?



22.47 DSSSD bias & leakage current OK - attachments 16-17

      FEE64 temps OK - attachment 18
       *except* aida02 ASIC temp - known fault

      ADC data item stats - attachment 19

      per FEE64 Rate spectra - attachment 20

      Data link, Tape Server & Merger - attachments 21-23

       

03.30


09.10



09.25 data file S100_alpha/R11
   
      BNC PB-5 pulser data

      amplitude 10.0V
      attenuation x10
      tau_d = 1ms
      polarity - ( initially + )
      frequency 25Hz

      ASIC settings2024Mar27-11.25.32
       slow comparator 0x64 all FEE64s


      aida02 pulser peak width 129 ch FWHM

      polsrity +

      aida09 pulser peak width 57 ch FWHM


09.40 switch to no storage

      p+n FEE64 slow comparators 0x64 -> 0xa
      n+n FEE64 slow comparators 0x64 -> 0xf

      radioactive source 152Eu 370kBq installed on the bottom side of the snout, centred tranversely, located beneath bplas-DSSSD-DSSSD-bplas position.

      ADC data item stats - attachment 35
      9/16 < 20k, max 108k

      per FEE64 Rate spectra - attachment 36

10.44 152Eu source removed

      ADC data item stats - attachment 37
      9/16 < 20k, max 102k

      per FEE64 Rate spectra - attachment 38

WR timestamps appear to be OK but readout times fort aida03, aida04 and aida09 appear to be out of sequence. Attachment 1-3.

Reseated HDMI cable of aida09 and performed complete powercycle. Check the MACB HDMI port (appears to be loose) - still no change aida09 not collecting WR timestamps. Attachment 4-5.

09.52 DAQ continues file S100_alpha/R5
       note merger not functioning correctly due to aida03, aida04 & aida09 out of WR sequence 

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temps OK - attachment 2
      *except* aida02 ASIC temp which is known to be u/s

      WR timestamps - attachment 3
       aida03, aida04 & aida09 out of sequence

      All system wide checks OK *except* ADC calibratio/FPGA/WR decoder status - attachments 4-6

      ADC data item stats - attachment 7

      per FEE64 Stat spectra - attachment 8

      per FEE64 1.8.L spectra - attachments 9-10

      per FEE64 1.8.W spectra - 20us FSR - attachments 11-12

      Merger, TapeServer & Link Data Rates - attachments 13-15

      Grafana - attachment 16
       DSSSD bias/leakage current trends OK


19.15 alpha background file S100_alpha/R10

      DSSSD bias & leakage current OK - attachment 17

      FEE64 temps OK - attachment 18
      *except* aida02 ASIC temp which is known to be u/s

      All system wide checks OK *except* ADC calibratio/FPGA/WR decoder status - attachments 19-21

      WR timestamps OK - attachment 22

      ADC data item stats - attachment 23

      Merger, TapeServer & Meger stats - attachments 24-26
       data rate c. 2.8Mb/s

      per FEE64 1.8.W spectra - 20us FSR - attachments 27-28

      correlation scaler stats & data link stats - attachments 29-30
       data rate dominated by MACB scaler inputs aida03 & aida04 ( c. 200kHz each )


22.16 DAQ continues Ok file S100_alpha/R10_35

      Merger, TapeServer & Meger stats - attachments 31-33
       data rate c. 2.8Mb/s

      ADC data item stats - attachment 34

      FEE64 temps OK - attachment 35
      *except* aida02 ASIC temp which is known to be u/s

      DSSSD bias & leakage current OK - attachment 36

00.40 Observed zero data fron aida03, aida04, aida09
      WR timestamps offset from other FEE64s

      rebooted aida03, aida04, aida09
      no change
      see attachments 14-17



18.25 rebooted aida03, aida04, aida09, aida15

      system wide checks OK *except* aida15 ADC not calibrated, FPGA decoder errors aida02, aida03
      ADC data item stats - attachment 28
      WR timestamps OK - attachment 29

      data file S100_alpha/R5 - alpha background

      Merger and TapeServer - attachments 30-31
       c. 1Mb/s to disk

21.05 FEE64 temps OK - attachment 44
      *except* aida02 ASIC temp which is known to be u/s

      All system wide checks OK *except* aida15 ASDC not calibrated, WR timestam/FPGA errors - attachments 41-43

      WR timestamps- attachment 40
       aida03, aida04 and aida09 differ from other timestamps again

      Merger and TapeServer - attachments 38-39
       c. 0Mb/s to disk due to WR timestamp issues

      per 1.8.W spectra - 20us FSR - attachments 36-37

      per FEE64 Rate spectra - attachments 34-35

      per FEE64 1.8.L spectra - attachments 32-33

11.45 DSSSD bias & leakage current OK - attachments 9-10

      FEE64 temps OK - attachment 8
      *except* aida02 ASIC temp which is known to be u/s

      All system wide checks OK *except* aida02 and aida04 WR decoder/FPGA status errors - attachments 6-7
       HDMI cabling disturbed during platform move?

      WR timestamps OK - attachment 5

      ADC data item stats - attachment 4
        10/16 < 20k, max 115k

      per FEE64 Rate spectra - attachments 3

      per 1.8.W spectra - 20us FSR - attachments 1-2

11.58 BB7 preamps unplugged. Noise conditions OK. Did not change considerably.
      11/16 < 20k (aida09 has 1 hot channel), max 114k Attachments 11-12.

12:34 Detector powered down to bring to safe state to check HDMI cables of aida02 and aida03.

15:06 Reseated aida02 and aida03. No more FPGA timestamp error. See attachment 13-14.

      Rates and histograms look good for pulser walk through. Test + and test - connected. Currently, Attachment 16-17.
      Temp OK Attachment 15. Bias OK Attachment 18.

      Data links aida02 and aida08 missing (?)

16:30 All slow comparator thresholds set to 0x64 for alpha background run during platform freeze.

      Initial rates and histograms attachment 19 - 20. aida04 noisy in ASIC 1.

      Temps OK. Attachment 21.
      MBS disc and tape setup in atttachment 22-23.

9:40 started up AIDA. TEMP OK. Noise condition same as Saturday. Attachments 1-3.

9:56 BB7 premaps connected but not powered. Attahcment 4.

10:20 BB7 Preamps powered. Attachment 5.

Noise increased marginally, but still 10/16 <20kHz, max 130k.

15.15  per FEE64 Rate spectra - attachment 6

             ADC data item stats - attachment 7

           increased noise observed - 6/16 < 20k, max 300k 

17.10  per FEE64 1.8.W spectra - 20us FSR - attachments 8-9

            per FEE64 Rate spectra - attachment 10

             ADC data item stats - attachment 11

           increased noise observed - 7/16 < 20k, max 180k 

20.30  per FEE64 Rate spectra - attachment 12

             ADC data item stats - attachment 13

           status quo ante - 10/16 < 20k, max 130k 

          FEE64 power OFF

          DSSSD bias OFF

15:04 bPlast was left powered over night. Powering up to check noise conditions - also to check shifting of Germanium baseline (no change observed).

          TEMP OK.

          Noise condition the same as yesterday when platform was moved in. Noise in aida01 and aida09 due to single channel failures (?). Attachments 1-3.

          9/16 <20kHz, max 176k

15:30 Changed drainwires ground from 4V (Ch3) -> 29.5V (Ch4) out on R&SMP4040 PSU. Attachments 4-5.

          No change in noise observed.

          9/16 <20kHz, max 187k

15:49 Connected PN 300 ground to R&SMP4040 4V (Ch3) output. Noise decreased in many channels aida09 does not have a noisy channel anymore (??). Attachments 6-7.

          10/16 <20kHz, max 158k.

Current bPlast grounding scheme in attachments 8-9.

15:00 Platform in, biasing detector. Temp OK Attachment 1. test - Pulser OFF.

           Rates somewhat worse than last night - probable contact on grounding of snout. Attachment 3.

           Histograms okay, some FEE64s now have hot channels. Attachment 2.

           9/16 aidas < 20kHz - max rate 162k

18:06 - powering down detector for the weekend. Overall system is fine, some channels (hot channels) definitely picked up noise, but condition is overall stable over three hours. See atachments 4-5.

TO-DO (kicking the can down the road):

- Some work to do on noise, but we might have to accept the situation as it currently is.

- Implement bPlast trigger scheme. Set bPlast thresholds, get bPlast current draw undercontrol - observe AIDA noise.

- Try different grounding configuration:

    - Grounding drain wires to frame. Observe AIDA conditions.

    - Reconnect 4V out to R&SRMP4040 common ground with PN 300 PSU as well. Observe AIDA conditions.