I experienced the following problem using a lossy transmission line. Even though the simulation (.op) can proceed, a non fatal error is occuring all the time: Unknown parameter "td". As I read in the online help Td is not a parameter of a lossy transmission line. So I wonder wy this problem is occuring.


Also, I haven't f find in the help a clear procedure explaining where to insert the value of the parameters of a complex model like a transmission line. After a few try, I have created a spice directive like the folowing : " model neg_terre_1 LTRA(R=9.6µ G=122µ L=0 C=0 len=10000) " and it worked.


Finnally, I want to extract the numbers appearing at the end of the .raw file. Can you tell me the format of this string?

Thanking you in advance for your reply


Michel Allaire ing.

SSTM
Société de Transport de Montréal
Soutien opérationnel


Courriel : michel.allaire@...
Téléphone : (514) 280-6335
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Michel,

I experienced the following problem using a lossy
transmission line. Even though the simulation (.op)
can proceed, a non fatal error is occuring all the
time: Unknown parameter "td". As I read in the
online help Td is not a parameter of a lossy
transmission line. So I wonder wy this problem is
occuring.

I think this as a problem in the definition of the
lossy T-line symbol. Try updating to 2.00c and
possibly redrafting the schematic.

Also, I haven't f find in the help a clear procedure
explaining where to insert the value of the
parameters of a complex model like a transmission
line. After a few try, I have created a spice
directive like the folowing : " model neg_terre_1
LTRA(R=9.6 G=122 L=0 C=0 len=10000) " and it
worked.

Congratuations. Yes, this is an aspect of the help
documentation that still needs improvement.

Finnally, I want to extract the numbers appearing at
the end of the .raw file. Can you tell me the format
of this string?

Helmut Sennewald wrote a utility to extract this
data. I think a released version is availible in
this group's files.

Best Regards,

--Mike

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