2.25 MARK command
2.25.1 Syntax
mark
2.25.2 Purpose
Remember circuit voltages and currents.
2.25.3 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.
2.25.4 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.