An upper bound on the real-time duration of a clock tick. This is a value D such that if t1 and t2 are any real times such that t1 < t2 and Clockt1 = Clockt2 then t2 − t1 <= D.
A: One microsecond.
An upper bound on the drift rate of Clock with respect to real time. This is a real number D such that
E*(1-D) <= (Clockt+E − Clockt) <= E*(1+D) provided that: Clockt + E*(1+D) <= Time_Last.
where Clockt is the value of Clock at time t, and E is a real time duration not less than 24 hours. The value of E used for this metric shall be reported.
A: This value is determined by the target hardware.
An upper bound on the execution time of a call to the Clock function, in processor clock cycles.
A: The Clock function execute in less than 2 microseconds at 10MHz.