FA125 Data Format Aug 25, 2015

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Location and Time

Room: CC F326 ?

Time: 2pm.

Remote Connection

You can connect using BlueJeans using the meeting number 589 693 655 .       (Click "Expand" to the right for more details -->):

(if problems, call phone in conference room: 757-269-6460 might not be the correct number)

  1. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 589693655.
  2. To join via a Web Browser, go to the page [1] https://bluejeans.com/589693655.
  3. To join via phone, use one of the following numbers and the Conference ID: 589693655
    • US or Canada: +1 408 740 7256 or
    • US or Canada: +1 888 240 2560

More information on connecting to bluejeans is here

Specific instructions for connecting via polycom:

  • Turn polycom on if necessary
  • With the polycom, place a call at 199.48.152.152
  • Press # to enable the polycom keypad, then enter the meeting id: 589693655 and #
  • You may have to unmute the microphone: #*4
  • Turn the computer on if needed

Agenda

  • Previous meeting (Aug 11, 2015)
  • FADC125 Firmware status
  • Driver library status
  • Catch up on format spec changes since last meeting:
    1. Removed combo data types
    2. Renumbered remaining data types (as 5,6,9) and added window raw data (4)
    3. Added combo modes (data types 5 or 6 followed by type 4)
    4. Replaced slot number with NPK in the header for data types 5,6,9
    5. For the CDC, NPK=1
    6. Added table to interpret times & quality codes
    7. Added PL to config parameters

Useful Info

File:FADC125 Format v6.5.pdf

Minutes

Present: Naomi (CMU), Cody, Beni, David (JLab)

  1. FADC125 Firmware status
    1. Cody has started testing the CDC combo mode using a pulser for input, shared the results with Naomi, and has a list of changes resulting from this
      • pedestal ends with sample PED
      • check all NW samples are output
      • add time of sample subset start *10 to LE_time
    2. Also there are changes from the latest format spec (listed below) to implement. He will do this in simulation first.
    3. We decided to keep NE fixed at 20
    4. The restriction NPK=1 will be made in software, so that the firmware is left more flexible for future development, and more similar to the FDC version which will aid maintenance.
    5. If a peak is flat-topped, the maximum amplitude sample should be the first sample at the top.
    6. Cody questioned the need for PL>=NW, he will look to see if this is really necessary
  2. Driver library status
    1. Naomi, Cody and Beni have all started using the software library. Cody used mode 6 to get the CDC combo mode output. The current version is for firmware 2.01 but Bryan also has the next version (for format 6.5) ready.
    2. Naomi requested a function fa125SetCommonTimingThreshold to set the same timing thresholds on all channels on one fadc.
    3. Beni said he found that the first event read out was weird, not in the correct format.
  3. Format spec changes since last meeting (latest version is 6.5):
    1. Removed combo data types
    2. Renumbered remaining data types (as 5,6,9) and added window raw data (4)
    3. Added combo modes (data types 5 or 6 followed by type 4)
    4. Replaced slot number with NPK in the header for data types 5,6,9
    5. For the CDC, NPK=1
    6. Added table to interpret times & quality codes
    7. Added PL to config parameters
  4. All the 'check with Cody' explanatory points marked in the spec were clarified & will be added to the next version. These are all descriptions, with no changes to the format entailed.
  5. Next meeting: 2pm Tues Sept 8th.