Quote:
Originally Posted by Electronic M
What is the max frequency of your scope and what frequency are you trying to see. If you've got a 5MHz scope and a 21MHz minimum generator the scope isn't going to be able to measure it's frequency full stop.
A digital scope's frequency counter isn't going to be able measure a swept frequency either as it expects a constant frequency. The markers on a sweep generator or the output of a generator designed for AM radio if within the frequency range of a scope should be measurable however if it has significant harmonic content that makes the output non-sinusoidal it will effect (confuse) the frequency counter and while manual measurement is possible it can be confusing.
This may sound wacky but on my non-swept tube generators anything adjustible under 30MHz I set the desired frequency on my Sony ICF-7600GR shortwave reciever which covers 150KHz to 30MHz (it also does Japanese and US FM bands) and dial the generator until I hear the generator then I reduce generator output coupling till I barely hear it then tune the generator again...
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Hi Tom...so this newfangled Fnirsi digital scope won't be able to help me align these TVs with this generator? I have a 60MHz Tektronix 2213A analog scope. Should it work on that? There are pictures online of individuals measuring the EICO 369 RF output (just the RF output...no sweeping or markers) with new scopes like Rigol equipment with perfect waveforms.