WP12248 OMC0 double duotone frequency

Erik, EJ, Jonathan, Dave:

The duotone frequency generated by the LIGO Timing Card in h1omc0's IO Chassis was increased from (960, 961)Hz to (1920, 1921)Hz

The available frequencies are hard-coded in the FPGA code on the timing card. The IOP model can request one of these frequencies, configued by the following line in the CDS params block:

duotone_frequency=1920

All models on h1omc0 were restarted with the new iop model:

Tue04Feb2025
LOC TIME HOSTNAME     MODEL/REBOOT
12:24:55 h1omc0       h1iopomc0   
12:25:09 h1omc0       h1omc       
12:25:23 h1omc0       h1omcpi     
 

An identical change was made at LLO on l1lsc0's Timing Card.