Table 1.

Overview of the simulation studies completed to test the robustness of the on-line digital lifetime measurement.

	Simulated phase delay (ns)
Frequency (MHz)	0	0.5	1	2	4	6	8	10	12	16	20	25
2.5	Measured the phase delays at 2, 6, and 15, µs pulse widths using 4, 10, and 12 modulation cycles for each respective pulse width.
5	Measured the phase delays at 2, 6, and 15 µs pulse widths using 5, 15, and 20 modulation cycles respectively.
10	Measured the phase delays at 2, 4, 6, 10, and 15 µs pulse widths and at 10, 20, and 30 modulation cycles for each pulse width.
16.667	Measured the phase delays at 2, 6, and 15 µs pulse widths using 5, 20, and 30 modulation cycles, respectively.