On Tuesday 02dec2025 Marc upgraded the firmware version of the IO Chassis timing cards at both end stations and mid stations. This upgrade was done "in place" using a laptop connected to the JTAG port on the timing card.

The current timing card firmware versions for H1 are:

All are running 0xfe0 except the following which are running 0x635

h1omc0: upgraded some time ago during O4 to move its DUOTONE frequencies from [960/961Hz] to [1920/1921Hz]

h1susey: upgraded Mon 01dec2025 when its timing card was replaced as part of the LIGO-DAC upgrade

Upgraded by Marc Tue 02dec2025:

h1iscex 
h1iscey
h1pemmx
h1pemmy
h1seiex
h1seiey
h1susauxex
h1susauxey
h1susey