Patent ID: 7321837

Claim:
A method for calibrating a plurality of clocks wherein at least one of the clocks is associated with a medical device system, the plurality of clocks comprising a first clock and a second clock, the method comprising: (a) reading a first current time from the second clock; (b) obtaining a reference time; (c) subtracting the current time from a reference time in order to determine a first drift time; (d) storing the first drift time into a memory; (e) notifying a user to calibrate the first and second clocks; (f) receiving a selected time, the selected time being different than the reference time; (g) receiving an indication that the selected time approximately equals the reference time; (h) obtaining a second current time from the second clock; (i) subtracting the second current time from the selected time in order to determine a second drift time; and (j) storing the second drift time into a memory.