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What is source termination?

What is source termination?

Source termination stops waves travelling at the source from reflecting back at the receiver by adding a series resistor that when added to the source resistance equals the characteristic impedance of the transmission line.

What is termination of transmission line?

In electronics, electrical termination is the practice of ending a transmission line with a device that matches the characteristic impedance of the line. Termination prevents signals from reflecting off the end of the transmission line.

What is a termination schedule?

Termination Schedule means the schedule of termination charges set forth in Attachment 7 to the Contract.

What is the value of a load termination?

Load Termination: Add parallel resistor at receiver. Value such that R L // R T = Z 0. If R L is large, then R T = Z 0

How is the load resistance related to termination?

Load termination involves placing a resistor in parallel (between signal and ground) with value such that the parallel combination of the termination resistor and load resistance equals the characteristic impedance of the transmission line. If the load resistance is relatively high, which it is for most digital circuits, then R T = Z 0.

Why is source termination important in a transmission line?

Because of this, source termination is only used when there is only one receiver and that receiver must be located at the end of the trace. If the resistor does not match the impedance of the wire/trace/cable then the voltage divider is not 50%– which results in an imperfect match and the reflection could cause issues.

Which is better source termination or parallel termination?

That resistor should be as close to the receiver as possible, you should also consider Thevenin termination as it uses much less power than the parallel termination. In general (this can vary a bit by application): Source Termination: Lowest power, slowest rise/fall times, single destination only.