Steve O'Connor, Chris G. and I calibrated the ring heater temperature, voltages and current channels in the front-end code. H2:TCS-ITMY_RING_HTR_SEG1_I_MON H2:TCS-ITMY_RING_HTR_SEG2_I_MON Ring Heater Current = 1.221E-2 mA/count (1V into ADC = 40mA = 3276.8 counts) & "deWhiten" filter = dewhitening by pole at 0.4Hz and zeros at 10Hz and 1kHz (+ gain = -1) Filter file: /opt/rtcds/lho/h2/chans/H2TCSITMY.txt H2:TCS-ITMY_RING_HTR_SEG1_V_MON H2:TCS-ITMY_RING_HTR_SEG2_V_MON Voltage over ring heater = 6.1035E-4 V/count (1V into ADC = 2V across Ring heater = 3276.8 counts) & "deWhiten" filter = dewhitening by pole at 0.4Hz and zeros at 10Hz and 1kHz (+ gain = -1) H2:TCS-ITMY_RING_HTR_SEG1_V_MON H2:TCS-ITMY_RING_HTR_SEG2_V_MON Local voltage across output from driver = 6.1035E-4 V/count (1V into ADC = 2V across Ring heater = 3276.8 counts)