Programming instructions

Source Components
Multisim Component Reference Guide 1-16 ni.com
1.20.1 PWL Source Input Text File Specification
This file must contain a list of time and voltage or current points. Each line of the file
represents one point. The format is:
Time <space(s)> Voltage or Time <space(s)> Current
You can leave any amount of space between the Time and Voltage/Current fields. Here is an
example of an ideally formatted input file:
Please note the following special considerations:
• If the earliest input point is not at time 0.0, then the PWL source gives the output of the
earliest time point from time 0.0 to that earliest time.
• After the latest input point, the PWL source gives the output of the latest time point in the
file from that latest time until the simulation ends.
• Between input points, the PWL source uses linear interpolation to generate output.
• The PWL source can handle unsorted data. It sorts the points by time before the simulation
starts.
00
2.88e-06 0.0181273
5.76e-06 0.0363142
1e-05 0.063185
1.848e-05 0.117198
If the PWL source encounters... It will...
non-whitespace at beginning of line ignore the line
non-numeric data following correctly formatted
data
accept data, ignore non-
numeric data
non-whitespace between Time and Voltage/
Current
ignore the line
whitespace preceding correctly formatted data accept data, ignore
whitespace
ComponentRef.book Page 16 Thursday, December 7, 2006 10:12 AM