WP12562
Jonathan, Erik, EJ, Jeff, Ryan, Fil, Dave:
As part of the h1susb123 crash investigation, after power cycling the computer and IO Chassis the next thing to do was to replace the 2nd 18bit-DAC card which was no longer visible on the bus.
During the 08:30 vent meeting it was discussed which option we should pursue: replace the suspect 18bit-DAC with another 18bit-DAC, replace this one card with a 20bit-DAC, replace all six 18bit-DACs with 20bit-DACs. The third option was chosen.
Hardware:
Keep the exisiting two 20bit-DACs, replace the six 18bit-DACs with 20bit-DACs. Put aside the second 18bit-DAC as a suspect card, put the other five cards into the O4 spare pool.
| Adnaco-slot | A3-4 | A3-3 | A3-2 | A3-1 | A2-4 | A2-3 | A2-2 | A2-1 | A1-4 | A1-3 | A1-2 | A1-1 | ||
| was | 20bit DAC-1 | 18bit 101208-60 | 18bit 101208-09 | 18bit 110425-20 | 18bit 110425-48 | 20bit DAC_0 | 18bit 110425-23 | ADC-1 | 18bit 110425-32 | ADC-0 | timing | |||
| is now | 20bit DAC | 20bit 220218-29 | 20bit 210303-49 | 20bit 210303-35 | 20bit 210303-22 | 20bit DAC | 20bit 210303-57 | ADC-1 | 20bit 220218-08 | ADC-0 | timing |
Sofware:
h1iopsusb123:
replace the DAC area with eight 20bit-DACs from CDS_PARTS, card numbers 0-7. The SWWD system already DACKILLs all eight DACs (card_num 0-7) irregardless of which suspension trips, so no change needed.
No change to INI file.
h1susitmx, h1susetmx, h1susbs, h1susitmpi:
See Jeff's alog for model changes. DAC part naming was chosen such that there were no changes to INI files.
Wed21May2025
LOC TIME HOSTNAME MODEL/REBOOT
07:29:37 h1susb123 ***REBOOT*** <<< try power cycle computer
07:32:01 h1susb123 h1iopsusb123
07:51:06 h1susb123 ***REBOOT*** <<< try power cycle computer and IO Chassis
07:53:30 h1susb123 h1iopsusb123
09:53:47 h1susb123 ***REBOOT*** <<< replace all 18bit-DACs with 20bit-DACs
09:56:18 h1susb123 h1iopsusb123
09:56:31 h1susb123 h1susitmy
09:56:44 h1susb123 h1susbs
09:56:57 h1susb123 h1susitmx
09:57:10 h1susb123 h1susitmpi