Q: I applied delay on the DS1023 10MHZ clock, the value of time delay varying (increase or decrease by 1ns every 10 seconds). The corresponding delayed waveform was observed on an oscilloscope. I discovered that, after delay, the pulse of the 10M CLK may increase in width and then return back to normal. Is this situation normal?
A: This situation is normal. The reason for the wider impulse is due to the change in time you made to the delayed output. The delay will only change the width of the impulse at that very moment when the delay happens, and has no effect on the subsequent cycles. Plainly speaking, you will observe a single CLK pulse becoming wider and then returning to normal.