Workout for scope and hifi.

[ppppenguin]

One of these XY displays passed throuhg my hands some years ago: http://w140.com/tekwiki/wiki/602

I couldn't find a reason to keep it.

In the colour TV world, a vectorscope** is a specialised XY display, with B-Y on the X axis and R-Y on the Y axis. Even now when PAL and NTSC are obsolete, monitoring software still usually offers a vector display.

** Strictly speaking Vectorscope is a Tek trademark but harldy anyone uses the generic "vector monitor".