MARK command

Syntax

MArk

Purpose

Remember circuit voltages and currents.

Comments

After the mark command, the transient and fourier analysis will continue from the values that were kept by the mark command, instead of progressing every time.

This allows reruns from the same starting point, which may be at any time, not necessarily 0.

Examples

transient 0 1 .01

A transient analysis starting at zero, running until 1 second, with step size .01 seconds. After this run, the clock is at 1 second.

mark

Remember the time, voltages, currents, etc.

transient

Another transient analysis. It continues from 1 second, to 2 seconds. (It spans 1 second, as before.) This command was not affected by the mark command.

transient

This will do exactly the same as the last one. From 1 second to 2 seconds. If it were not for mark, it would have started from 2 seconds.

transient 1.5 .001

Try again with smaller steps. Again, it starts at 1 second.

unmark

Release the effect of mark.

transient

Exactly the same as the last time, as if we didn't unmark. (1 to 1.5 seconds.)

transient

This one continues from where the last one left off: at 1.5 seconds. From now on, time will move forward.