electronic component tester

necropost: I broke this out to play with my oscilloscope to see if I could get some wave forms up. After looking forever for some instructions on how to do this, I figured it out. There is a 2 pin socket at the top right under the display. The top pin is GND, the bottom pin is the frequency measuring input. So if you tie that bottom pin to the probe test point of an O-scope, youll get a 1KHz reading on EZM328 frequency counter as that is what's output on the probe test point, perfect! solder on a BNC and you got a probe socket. The Frequency Generator function allows you to generate a 52v peak to peak frequency that is output on pin 2 of 3 pin test port, or position 2/pad 2 of ZIF/test pad, and the ground point of top pin GND (or pin3/pad3/socket3).. Hey, it works! It will even do a variable PWM pulse using same pin 2+pin3(GND) hookup. Pretty cool for a $12 kit. The newer kits have a color display.

instructions here for most models
http://www.n5dux.com/ham/files/pdf/M12864 Transistor Tester Instructions.pdf