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Setting the thresholds for PaDiWa Amps

Threshold are authomaticaly loaded during DAQ restart or one can sent them to front-end boards using the commands:

0.) login to hadaq@hadesdaq01 or vncviewer hadesdaq01:2 and go to /home/hadaq/trbsoft/hadesdaq/start/

1.) bash startup.script

2.) ../../daqtools/ ThreshPadiwaVeto.db

Finding the threshold value

To find the threshold value one have to do:

1.) in the web browser (any machine in GSI network) open hades33:1234

2.) in the Front-end section clic Threshold settings

3.) select board (5010, 5011, 5012, 5013), chain (0) and channel (0 - 2 - .... - 14 for fast channels and 1 - 3 - ... - 15 for slow channels)

4.) move the corse (or fine) threshold button around 60 mV (fast signal) and around 2890 mV (slow signal) to find the noise (there is 60 mV offset in the threshold setting, so 60 mV threshold equls to zero in reality)

5.) go to higher threshold (as far from the noise as you need), read the hex value and write it to the file ThreshPadiwaVeto.db

Check connection to the Padowa boards

Web browser --> hades33:1234 --> "Front-ends" --> Padiwa --> "Board" --> fe48 --> Temp/Id ... -----> you will see to which TDC the boards are connected.

Current file with threshold: -- OndrejSvoboda - 06 May 2014
Topic attachments
I Attachment Action Size Date Who Comment
ThreshPadiwaVeto.dbdb ThreshPadiwaVeto.db manage 4.1 K 06 Aug 2014 - 15:34 AdrianRost Hodo Thresholds July14
thresholds.txttxt thresholds.txt manage 4.4 K 06 May 2014 - 08:31 OndrejSvoboda Thresholds for PaDiWa Amps and hodoscope
Topic revision: r5 - 19 Aug 2014, LukasChlad
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