Re: 453 calibrator
People misinterpret things all of the time.toggle quoted messageShow quoted text
And people use their test equipment wrongly quite a lot.
I am not saying that is happening here, but it feels like
it might be.
If BA is truly at ground, then his scope is wired incorrectly.
Maybe someone measured BA to ground, found it wasn't, then
misinterpreting the schematic, added a jumper between BA and BB.
Maybe the coax has been subject to the soldering iron too many
times, and the center insulation is now shorted to the ground
The only reason BB is at ground is to ground the shield on the
coax. Purely a noise reduction issue.
Mike Merigliano wrote:
Why would either BA or BB be a dead short (at ground) to Q1274's emitter? There is a