A few years back Tektronics produced an oscilloscope tester ! It was a small battery operated unit with a 9 volt PP3 battery on one side of a PCB. Does anyone have a circuit or information about this ? Thanks.
in my job fixing internet connections (here in the UK) I constantly collide with bad adsl signals and dodgy home telephone wiring and I need a device that tests the presence/level/quality of the adsl signal on the line - something I can plug into the BT socket and get an accurate ...