Table 2.

Summary of measured warm-up time, ARW, and bias instability under different conditions

Test condition	Phase shift circuit	Warm-up time1 (s)	ARW ( deg/h/rtHz)	Bias instability ( deg/h)
Without ASCS	All pass filter	2000	7.43	4
With ASCS	All pass filter	2	7.38	2.23
With ASCS	Integrator with DC self-cancellation	2	7.31	2.15

¹Note: 10 deg/h bias stability (1σ) is considered the criterion for measuring warm-up time