Here are some instructions to ramp up the HEPI and the ISI
1- SUS must be damped (SUS watchdogs are connected to ISI)
2- ISI must be ONLY damped (using the "Command window")
3- Ramp up the feedforward using a gain of 1 in X, Y, Z. No feedforward in the other directions
4- HEPI can be controlled in position or with a IPS-L4C blend
1- Position control uses the IPS only. In BLND block, FM2 filter must be engaged for position control
2- There are 3 sets of Isolation filters in the ISO Block (Level 1 are the filters dedicated for the IPS-L4C blend, Level 2 are filters for position control with UGF at 100mHz, Level 3 are filters for position control with UGF at 5Hz). USE Level 2 or level 3 for now
5- Ramping up the ISI
1- Super sensor of stage 1 must use L4Cs when ramping up (T240 might saturate due to DC position offsets) Press 750mHz
2- Super sensor of stage 2 can be ramped with GS13 blended at 250mHz
3- Go to command and press Isolate Level 3 (40Hz UGF on stage 1, 32Hz UGF on stage 2)
4- Wait few seconds (till the T240s input values are less than 2000counts)
5- Lower the Blend frequency on stage 1 and introduce the T240s in the blend. Press T250mHz in all DOFs. Additional filters (T100mHz and T100mHz_0.44) can also be used to get some isolation at 0.44Hz (QUAD first pitch mode)
6- HEPI offloading. In ISC Mon. Turn on control in Y
7- Sensor correction (tricky during the day due to install activities)
1- Ramp up the sensor correction on stage 1 (Turn on the output switch and ramp up the gain to 1 in the GND bank)
2- Ramp up the sensor correction on stage 2 (Turn on the output switch and ramp up the gain to 1)
This applies for the three BSC-ISIs (except HEPI on BSC1 )