Hi,
A colleague of mine got a Tektronix TG2000 from eBay. Unfortunately the battery was dead and after replacement we realised that the video patterns were gone.
We managed to get some of the PAL pattern from the Tektronix website but not the NTSC ones.
We asked Tektronix but no luck so far.
Maybe someone on the forum have some of these *.drl files on a floppy disk.
I don't know if it is relevant but we use it in analog output (AVG1).