Minutes20161021

• venue: google hangouts
• present: @jmizrahi @gkasprow @sbourdeauducq @dhslichter @jbqubit
• minutes: @jbqubit
• date: 10/22/2016

Review funding

@jbqubit summarizes progress on funding topics in #17

• m-labs contract start date was 10/18 for AWG Demo, Synchronized AWG demo, Ultrascale port, basic board support for Sayma and Metlino -- depends on DRTIO
• Oxford funding of DRTIO will be "filled in a week or so"; this is holding up the Synchronized AWG demo
• @jbqubit is testing JESD204B and AD9154 demo delivered by m-labs as reported on mailing list

Discussion

#8 analog mezzanine interface discussed.

#22

Discussed status. Schematics are complete.

#21

When operating Sayma ARM+RTM on benchtop use the following.

• communication with Core Device (MCH)
  • AMC backplane Port 4 uses transceivers to communicate with Core Device
  • a SATA connector on the AMC backplane is also connected to Port 4 (passive)
  • in stand-alone configuration use a to SATA to SFP adapter to connect ARTIQ Master with board
  • no change in gateware is needed
• power with +12V ATX power supply (common in PCs)
  • @gkasprow is this the 4-pin connector in the upper right-hand corner? link

Chassis:

• @gkasprow RTM RF backplane part number for 6-slot chassis
• @gkasprow RTM RF backplane part number for 12-slot chassis

#27

@sbouhabib raises an important consideration. Path from RTM clock generation slot to the Sayma RTM analog mezzanine traverses many steps. Many transitions...

• RTM clock generation module
• connector to RF backplane
• connector to Sayma RTM motherboard
• connector to Sayma RTM clock mezzanine @sbouhabib What did you find?

Narrow-band 100 MHz distribution directly to the Sayma RTM clock mezzanine avoids these difficulties. Low phase noise narrow band distribution amplifiers are available.

• SDI HPDA-100RM-A operates at 100 MHz, 1:5 $3k/ea ; 1:10 version also available link
• Wenzel Associates makes a variant of the LNDA-3 at 100 MHz, 1:3k $538/ea [link]