Why do I get non zero values for the S11 and S22 parameters of the Coaxial transmission block in the RF Blockset 2.1 (R2007a)?

I am looking at the documentation of the Coaxial Transmission Block and the parameters S11 and S22 are listed as zero.

When I use the visualization tool of the block I see that these parameters have non zero values.

Answer 1

[MathWorks Support Team]

The values take the value of zero when the reference impedance has the value of 50.031708615416946 ohms

In the model dialog this value is by default 50 ohms therefore leading to different values than the ones listed in the doc.