Electronic PCB Card Cloning Databus Delay

Apply the databus delay parameter model doesn’t need a special simulated analysis to precisely analyze the circuit action. Through the practice has approved that if the delay element of lump parameter inside the Electronic PCB Card Cloning, then the physical practice could be quite close to the theoretical analyzed simulation.

Accompany with increasing signal variation (the shorten of signal upward time and downward time), PCBA Cloning can turn each one of the layout segment from ideal track to complex transmitting line. At this moment, signal connection delay can’t use the lump parameter model way to build the driver output. At this time, the same driver signal can drive a complicate Electronic pcb card connection, so each one of the receivers which have been connected electrically will receive different signal. Not only the signal delay from the Electronic circuit board cloning connection must be splited into individual signal delay, but also need to take careful consideration about the interactive affection among these transmission line on each one of the Electronic pcb card connection segment from cloning. Due to the existence of high speed transferring, it will make the PWB Replication  quite difficult to predict the signal on the PCB connection relation, as a result of that, we need to analyze the signal track to ensure each one of the receiver can review the actual delay on the input terminal signal.

From the practical experience of PCB board copying, once the transmission line’s length exceed the one sixth effective length from lifting time length of driver or dropping time length, the effect of transmission line will be presented. For example, presume the lifting time on the component is 1ns, and the transmitting speed of signal on the PCB connected line obtain is 2NS per feet, then as long as its connected line length exceed one inch, the transmission line effect will present as well as the potential high speed circuit problem will come out to light. Obviously, the chance of circuit tracks on the PCB are all shorter than 1inch is very rare. Base upon this knowledge, we will encounter some high speed issues when apply the component with 1NS lifting time cycle.