As of 24 mar 2018, I will no longer do any updates to the T-check program, I reccomend you try out KE5FX’s GPIB toolkit, as this has a similar program.
Ok, since this blog seems to be about the software I write, and not about RF engineering, altough this may be related.
T-check is an routine by R&S to verify the validity of network analyzer SOLT calibration. This is explained in the R&S application note 1EZ43_0E, covering the math behind the routine as well as the T-checker, an coaxial adapter with an integrated 50 ohm resistor. An simplified method to realize this may be an T adapter with an 50 ohm termination on the 3. port.
The VNA is calibrated and this device is inserted instead of the DUT. The S-parameters are then saved and run through the T-checker program.
The program, as supplied from R&S does only work on 32bit computers. I made an implementation that run on both 64bit and 32bit windows as well as linux, BSD, UNIX, OSX and even Playstation 3 with MONO.
My implementation, named “open T-check” are avaible here
RF and electronics blog LA3PNA 