Re: 453 calibrator
The signal is not shorted to ground -- it goes through a 2.19K resistor in series first, so there is no short. My Tek 453 has a calibrator signal, at specification. My ohmeter and voltmeter check measurements between/around Q1274, point BA, R1274, and point BB match what is on the schematic.toggle quoted messageShow quoted text
Maybe I am missing something.
On 5/9/2018 10:19 AM, Jeff Urban wrote:
On Wed, May 9, 2018 at 08:13 am, Mike Merigliano wrote:There is no error here; BB is a ground point, and the emitter of Q1274 goes toThen there can be no output at the calibrator terminal unless the whole thing floats and has a separately isolated power supply. The signal would forever be shorted to ground.