prsctrl.data.functions.dIX

dIX(lR, slR, theta, stheta, dI_offset, sdI_offset)

Calculate the in-phase (X) signal component

delta I_X = delta R * cos(theta) - delta U_offset

Currently, the error of the offset is not included in the error of delta I_X.

Parameters:

• lR – R from lock-in

• slR – standard error of R from lock-in

• theta – offset-corrected theta from lock-in

• stheta – standard error of offset-corrected theta from lock-in

• dI_offset – R-offset from lock-in

• sdI_offset – standard error of R-offset from lock-in

Returns:

delta I_X