beginning to see the issue.
“caring is not enough” did not forget anything…..it is so simple. just buy the book and get your peace of mind right back where it should be. get it right at the end of life! cable on the test port. the thinking was if you don't use a cable, your phase match is 1/2 meter; if you use one on port 1 and one on port 2, still 1/2 meter, just in the opposite direction.
for the most part, this is a small error too. 