another try to fix ascii in TRL example.jesus.!!
"\n",
"Described in [1] by Roger Marks, switch-terms account for the fact that the 8-term (aka error-box ) model is overly simplified. The two error networks change slightly depending on which port is being excited. This is due to the internal switch within the VNA. The change in reflection coefficient at the VNA's internal switch is known as a *switch term*, it can be directed measured and removed.\n",
"\n",
+ "* [1] R.B. Marks, \"Formulations of the Basic Vector Network Analyzer Error Model including Switch-Terms,\" in ARFTG Conference Digest-Fall, 50th, 1997, vol. 32, pp. 115-126\n",
+ "\n",
"### How do I get them ?\n",
"\n",
"To measure the switch terms manually, you can define custom traces as ratio's of receivers and save the data to touchstone files. Assume ports are labeled 1 and 2, and incident waves are a's and reflected waves are b's. Then, the *forward* switch term is set up as a trace as `a2/b2` with source port 1, while the *reverse* switch term is `a1/b1` with source port 2. See the image below for an example of setting this up on a PNA. \n",
"outputs": [],
"source": [
"from IPython.display import Image \n",
- "#Image('switch_term_dialog.jpg',width=800)"
+ "Image('switch_term_dialog.png',width=800)"
]
},
{
