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