Richard Fil Ed Daniel

All VCOs and FDDs were equipped with the piggy-back board, which implements a relay to the power off the 1-GHz VCO, the RF dividers and the RF amplifiers. This required updated slow controls code and screens. There is a new button on the medm screen that turns on and off these RF parts. This replaces the excitation enable button which is now only available in hardware. So, there is still a readback of the state of the excitation switch. There are also new readbacks of the power state for VCO and FDD sections (corresponds to the two front panel power switches).

All VCO/FDD chassis have been upgraded in place with the exception of the squeezer VCO (s/n S1200565) which has been replaced with the spare (s/n S1700242).