Hello ROACH2 users I thought I'd share some out-the-wall power measurements of a shipping model ROACH2, including fans etc:
Standby (plugged in the wall, but not powered up): 7W (17VA) Idle (powered on, PPC booted, but FPGA not programmed): 52W (84VA) FPGA programmed with a ridiculously lightly loaded design (software register and counter 100MHz): 57W (this depends heavily on your boffile; I don't have a heavily loaded design compiled for R2 yet) The single ROACH2 that I was measuring had a rather poor power factor of between 0.59 and 0.62, depending on the loading. This might motivate for PF-correcting PSUs for larger installations. ADDONS: ======= SFP+ mezzanine card: 5.5W per card, with no modules plugged in 5.5W per card, driving four copper SFP direct attach cables 9.5W per card, driving four 10GBASE-LR long-range optical modules MeerKAT ADC (10bit, 1.8GSa/s): 15W each Jason
