High Performance MTCA.4 White Rabbit Receiver issueshttps://ohwr.org/project/ertm15-llrf-wr/issues2021-10-13T12:53:59Zhttps://ohwr.org/project/ertm15-llrf-wr/issues/76Include heatsinks for RF part2021-10-13T12:53:59ZErik van der BijInclude heatsinks for RF partOn current production (2021) hand soldered. Needed because of poor cooling in MTCA crate.
(info from TW)https://ohwr.org/project/ertm15-llrf-wr/issues/75eRTM15: replace aluminum capacitor C177 with a higher-lifetime part2021-01-26T16:01:28ZChristos GentsoseRTM15: replace aluminum capacitor C177 with a higher-lifetime partLifetime for EEUFC1V221L is [2000h](https://industrial.panasonic.com/ww/products/capacitors/aluminum-capacitors/aluminum-cap-lead/models/EEUFC1V221L) at 105°C, which would translate to roughly 3.5 years at 65°C. Swap it for a part rated for 5000h (like EEU-FC1V221LB from the [same series](https://industrial.panasonic.com/cdbs/www-data/pdf/RDF0000/ast-ind-152839.pdf), would give us 9 years at 65°C) or 10000h (like EEU-EB1V221).https://ohwr.org/project/ertm15-llrf-wr/issues/74MMC status/fault LEDs wrongly soldered2021-01-14T18:12:36ZTomasz WlostowskiMMC status/fault LEDs wrongly solderedLEDs soldered in reverse on certain boards. Resolder all, make sure it's clear in the docs (it seems so). Change the right angle LED to an easier-solderable package (boards seem to have been manually reworked by the manufacturer)https://ohwr.org/project/ertm15-llrf-wr/issues/73eRTM15: Unconnected Vcc pin in IC112021-01-14T14:28:22ZTomasz WlostowskieRTM15: Unconnected Vcc pin in IC11Sad but true...https://ohwr.org/project/ertm15-llrf-wr/issues/72Change inductor type2020-10-20T09:35:17ZMattia RizziChange inductor typeL16 and L17 (22uH) should be replaced with 10uH XAL5050 inductors.
Footprint is compatible.EDA-03850-V2Tomasz WlostowskiTomasz Wlostowskihttps://ohwr.org/project/ertm15-llrf-wr/issues/71Decrease R145 value to compensate power plane drop on P3V3A2020-10-20T09:32:55ZMattia RizziDecrease R145 value to compensate power plane drop on P3V3AP3V3A voltage regulator has a narrow power plane to P3V6. Under full load, a drop of 70 mV has been measured.
Decrease R145 value (setpoint of LMZ31704 dc/dc) from 280R 0.1% (equivalent to 3.65V before LC filter, or 3.52V after LC filter) to 270R 0.1% (3.77V before filter).EDA-03850-V2Tomasz WlostowskiTomasz Wlostowskihttps://ohwr.org/project/ertm15-llrf-wr/issues/7010 MHz DFF clock, missing DC level2020-04-14T10:22:20ZMattia Rizzi10 MHz DFF clock, missing DC levelDFF requires DC connection for the input clock (no internal bias)
Replace 100nf capacitor C100 and C101 with 0R resistorsEDA-03850-V2https://ohwr.org/project/ertm15-llrf-wr/issues/36eRTM14/15: include mechanics in the BOM2019-11-04T16:11:49ZTomasz WlostowskieRTM14/15: include mechanics in the BOMAsk DEM to include spacers and screws (for board 'sandwiching' and securing the b2b connectors).EDA-03849-V2