Tektronix 576 Curve Tracer Camera Hood

The Tektronix 576 curve tracer remains a popular workhorse in electronics labs today even though the last one was manufactured in 1990.

Originally, a Polaroid camera with a special fixture was used to take photos of the CRT screen. Remarkably, those Polaroid cameras continued to be used for decades after the invention of the digital camera.

Now, most people snap a picture of the screen using their mobile phone, but the results are disappointing. The photos show artifacts from the room lig