Continuing the coil balancing work that Jeff and Arnauld did yesterday. I have done here M2 stage of SR2 this was not done yesterday.

1.- Verifyed that all required lock-in processing filters were ON.
2.- Locking output channels are on the same range.
3.- 	3.1.- Set SR2 M2 Control State Request to -2 so that I can do the next step. NOTE: Remember to switch it back to 1!!!!
	3.2.- Turned off all compensation filters in COILOUTF.
4.- Both Oscillators on  NOTE: Remember to turn them off by setting AMP=0
5.- LKIN EXC On at stage M2 of SR2 and then set the matrix to achieve proper feedback to magnets for balancing purposes.
6.- Tuning the demo-phase for Y and P by minimizing abs(Q):
	Original Phases: Phase_Y=161.74; Phase_P=164.115
	Tuned Phases: Phase_Y=163.54; Phase_P=166.45
7.- Now fine tuning: After averaging for 100 seconds I get with the above tuned demo-phase:
	
	Channel					Mean		Std
	H1:SUS-SR2_LKIN_P_DEMOD_I_OUTPUT    1104.20497833    0.332317132033
	H1:SUS-SR2_LKIN_P_DEMOD_Q_OUTPUT    0.997568668202    0.428787676432
	H1:SUS-SR2_LKIN_Y_DEMOD_I_OUTPUT    -485.891039524    0.261111721554
	H1:SUS-SR2_LKIN_Y_DEMOD_Q_OUTPUT    0.739719299972    0.498529072505

8.- Perturbed coil balance by 5% in Pitch:

	Channel					Mean		Std
	H1:SUS-SR2_LKIN_P_DEMOD_I_OUTPUT    1156.16758125    0.324685473794
	H1:SUS-SR2_LKIN_P_DEMOD_Q_OUTPUT    1.66253609359    0.314431576323
	H1:SUS-SR2_LKIN_Y_DEMOD_I_OUTPUT    -405.540709152    0.274492558317
	H1:SUS-SR2_LKIN_Y_DEMOD_Q_OUTPUT    -1.65497177806    0.573910162496

9.- Comparing above results as before and after the big pitch perturbation we obtain dPhi_YAW = -1.707, this gives a New YAW Phase = 161.83
10.- After setting the new YAW Phase as per previous calculation we return coil balance gains to +/-1 and then perturbe coil balance by 5% in Yaw, I notice that the output of Q-phase on Yaw did not change with the perturbation as expected:
	Channel					Mean		Std

	H1:SUS-SR2_LKIN_P_DEMOD_I_OUTPUT    944.4481493    0.393270410188
	H1:SUS-SR2_LKIN_P_DEMOD_Q_OUTPUT    -3.35177160591    0.567144372485
	H1:SUS-SR2_LKIN_Y_DEMOD_I_OUTPUT    -509.039515724    0.372769193576
	H1:SUS-SR2_LKIN_Y_DEMOD_Q_OUTPUT    2.36198258422    0.446590390439

	Comparing above results as 'before' and 'after' the big yaw perturbation we obtain dPhi_PITCH = 1.5595, this gives a New PITCH Phase = 168.01

11.- After changing the PITCH demo-phase as above and restoring the COILOUTF gains to +/-1 we capture final numbers:
	Channel					Mean		Std
	H1:SUS-SR2_LKIN_P_DEMOD_I_OUTPUT    1102.94240685    0.378145395519
	H1:SUS-SR2_LKIN_P_DEMOD_Q_OUTPUT    -28.4297279441    0.508022797023
	H1:SUS-SR2_LKIN_Y_DEMOD_I_OUTPUT    -486.409383831    0.347574279778
	H1:SUS-SR2_LKIN_Y_DEMOD_Q_OUTPUT    -1.32919580463    0.186111871061


12.- After careful tuning of the coil balance gains these are the final values:

IMPORTANT: The tunning of the UL coil has no effect at all on the output signals which may indicate that the coil is actually not connected. 
	H1:SUS-SR2_M2_COILOUTF_UL_GAIN 1
	H1:SUS-SR2_M2_COILOUTF_LL_GAIN -1.95
	H1:SUS-SR2_M2_COILOUTF_UR_GAIN -1.26
	H1:SUS-SR2_M2_COILOUTF_LR_GAIN 0.09

13.- During the measurements to quantify the improvement in balance something happened that changed a lot the values of DEMOD_Q_OUTPUT for both Pitch and Yaw. Certainly this affected very negatively the performance measurements. Based on this and on the issue regarding the unresponsive UL coil, I SHALL REDO M2 AGAIN TOMORROW.