Online telecon notes for July 3, 2002.

Attending:

• Zhigang Wang (UCSC/TKR)
• Connie Houchens (GSFC/ACD)
• Jim La (GSFC/ACD)
• Byron Leas (NRL/CAL)
• Dan Wood (NRL/CAL)
• Mike Huffer (SLAC/ELX)
• Larry Wai (SLAC/I&T-IFCT)
• Alicia Kavelaars (SLAC/I&T-SVAC)
• Dave Lung (SLAC/IOC)
• Selim Tuvi (SLAC/I&T-Online)
• Ric Claus (SLAC/I&T-Online), minutes author

• Core Online work has been mostly TKR support and commissioning of TKR SCL interface
• May have to password protect Online release update downloads in conjunction with ITAR and/or license restrictions
• Password restrictions on the I&T/Online website were recently removed after having been inadvertently applied
• Update from Electronics (Mike)
• TEM document is published
• Power supply, high voltage control in GTIC, in addition to Low Rate Science counters
• AEM progress stopped due to Mark Freytag working on CAL front end
• Mark will be about 1 month late on AEM
• Current COMM boards will be replaced by the LAT Communications Board (LCB)
• LCB will be very flight-like in functionality
• Replaces two VME COMM boards for TEM systems, one VME COMM board for AEM systems
• EM version implemented in double wide PMC format for mounting on the SBC
• Flight version will be in cPCI format
• EM systems will have a VME “Transition board” to solve cabling problem
• Acts as Power Distribution Unit (PDU)
• A power supply assembly will mimic the spacecraft power supply
• Emphasis on solution being compatible with VME based test stands
• EM test stands will not have to be converted to cPCI
• LCB will be software compatible with current VME COMM board from the SCL viewpoint
• Memo on LCB use is in preparation
• Byron asked whether low level debugging will be available
• Yes, on same level that it is for the COMM boards
• Jim asked whether the solution is compatible with ACD’s environmental test, which requires the assembly operate in thermal-vac
• Good point. It’s being handled by using power supplies that are capable of being conductively cooled
• TEM2 status
• Layout still not done. Leonid on vacation.
• The four existing TEMs will be thrown out
• Byron: what is difference between TEM and TEM2?
• Cabling and the connectors
• GTIC
• Note that the TEM document describes the TEM2 GTIC, not the TEM one
• Jim: ACD requests a second VME crate
• Mike to forward request to Gunther
• Core Online status (Selim)
• Hippo
• Problems with Windows port solved
• More or less ready
• Need to implement circular buffer for strip charts
• Uses the Boost package to interact with Python
• Python
• Will upgrade CallDll interface to SCL with Boost version
• TKR
• Received TKR hardware from Curt
• Have register command/response path working
• Have event data taking working
• Zhigang is interested in getting started with a test stand system
• Expected to visit SLAC yesterday to work with Online and Dave Nelson and take a system back to Santa Cruz
• Postponed to next week due to Dave being on vacation
• MS Access connection to/from SCL (Alicia)
• Added rest of the CAL record types to the Access database schema
• Would like some time from Online to review progress
• Byron: Can SCL database contents be uploaded to Access?
• Not yet
• Important for generating test reports
• Byron sent Online an example of a model to follow
• CAL progress (Byron)
• Working on the CAL check-out register script
• Playing with various triggers and trying to understand some anomalies
• ACD progress (Connie)
• Tested event data taking; need guidance on interpreting the results
• Got LabVIEW running after a shortcut glitch
• Working with SCL constraints for GARC
• Got it to work on the NT RTE, but not on the VxWorks one (times out)
• Ric requests example so that we might reproduce the problem at SLAC
• Request for feedback on system usage, etc. Are requirements being met? (Ric)
• Byron: Other than performance issue, mostly satisfied
• Performance improvement worked out – will deploy in new release shortly
• Byron: Need a message logging facility
• Becomes critical path soon
• Will work with stubs for a while and hope that changing to the official method will not be to difficult
• Ric apologized for not being able to make progress on this last week
• Byron: Configuration difficult, XML solves that problem for them
• Need to be able to enable/disable elements at the chip, if not the register level to accommodate hardware with different levels of readiness
• Ric trying to understand the requirement and why what we provided through SCL isn’t satisfactory
• Some designing on the fly suggested that something might be workable, but better understanding is needed