Julian:
- focus on the stuck frames in the epixHR system
- four prototype XPM boards are in production with new connector (only 1 so far?). Larry will work with Julian (with advice from Matt) to test the boards. One goes to BPM group, another to low-level-RF test stand. Not clear who these are going to (we're not the only customer)
- will implement bucket-hopping fix (with advice from Matt)
Riccardo
- will test when bucket-hopping fix is available
- non-self-locking xpm ports
- longer term: add hsd/wave8 systems to test stand
cpo will try to reproduce the stuck-frames (which we "fix" with xpmmini→lcls2 workaround) with the tixel system that Christos Bakalis is using. Now scheduled for Dec. 12

Meetings

Jan. 5, 2024

(Julian, matt, Riccardo, cpo)

...

Julian:
- provides equalizer parameters
- works on remaining 3 XPM prototypes to make sure they're good
- provides lcls2-pgp-pcie-apps firmware for camlink
Riccardo:
- check the room 208 xpm fiber-loopback with the new equalizer parameters when they are available
- check the bucket hopping fix when it is available
- (lower priority) ideally add hsd/wave8 to the teststand
  - to try to get the data links to be robust to power outages and fiber-unplugs
  - possibility to put it in an existing drp node (if we remove infiniband card) or cpo thinks we may have a spare chassis (setup from Omar might block us)
Matt:
- provides new firmware with above fixes, and programming of equalizer values
Chris:
- work with Christos to get the fixes in the tixel

...

Update from Julian:

hsd-kcu eyescan software needs to be pushed
Julian will merge the eyediag and/or eyescan branches as needed
hsd jesd scan is in progress
XPM order need to clarify if there are one or two orders, and how many pm's does the photon side get? We need 2 for mfx, 2 for txi plus spares. Matt is asking Thuy for this info.
- Update: Matt writes that we own the following hardware: "2 xpm boards are ready (Thuy has them), 2 xpm boards are still being completed by Lupe. We have 10 8 AMC cards (need 2 per carrier). We have 2 passive timing fanouts and 2 network switches (one is in use elsewhere). She lists 2 atca crates with no location - I think those are not yet acquired". Matt says Maybe only have 4 carriers. Julian only has 2 AMC cards, but perhaps those are for the "other order" that isn't LCLS.
ATCA crate vendor still in-progress (need 2 : for mfx (hutch/mezzanine) and 1 for txi)
Matt says there might be a board that can do low-jitter xpm functionality. This would be cool.

Whole xpm->hsd→drp path is done except the JESD links. Needs latest xpm/hsd/drp firmware. New hsd firmware is 0x5000100. Feb. 6 hsd-drp firmware here https://github.com/slaclab/l2si-drp/releases (4.0.4) has this. hsd needs new software since the address map changed (backwardly incompatible) but still in the eyediag branch only. be careful when we merge this branch (do this in July downtime?)
JESD link eye-scan is in-progress (getting close)
- JESD links are over the mezzanine connector (not firefly)
cmp005 datadev_1 eye-scan looks terrible (rix hsd_2, hsd_3, which are known bad). lab3 hsd looks "poor" BER 10**-19, but expect 10**-21 in loopback mode.
- Matt says two parameters in the MGT to try to improve lab3 loopback (exposed in pgp axilite interface): "diff control" "post cursor" (tx params). matt exposed in epics.
- not aware of any QSFP parameters (and we don't have I2C bus hooked up)