Here's a handy tip for those of us who use a Tektronix 475 - although this tip may apply to other 'scopes, depending on their design - as you'll discover . . .
The vertical channel 2 of the 475 has its output, suitably amplified and brought out at the back panel. By connecting a frequency counter to this output, you can thus not only see the waveform but you can also accurately measure its frequency. This method is a lot easier - and more accurate - than deducing the freq. of the input signal from the timebase setting. Plus, if the signal from the item under test is of insufficient magnitude to drive the counter direct, the CH.2 vert. amp. buffers and amplifies it for you. With a 10X probe for the 'scope, this technique makes setting up the oscillator in a superhet radio for correct tracking, etc. very easy, especially on the higher short-wave freqs., (assuming an IF of 465 kc/s) where it's easy to get the oscillator on the 'wrong side'.
Al.
(Post-edited by Al., 27 June: grammatical errors.)
The vertical channel 2 of the 475 has its output, suitably amplified and brought out at the back panel. By connecting a frequency counter to this output, you can thus not only see the waveform but you can also accurately measure its frequency. This method is a lot easier - and more accurate - than deducing the freq. of the input signal from the timebase setting. Plus, if the signal from the item under test is of insufficient magnitude to drive the counter direct, the CH.2 vert. amp. buffers and amplifies it for you. With a 10X probe for the 'scope, this technique makes setting up the oscillator in a superhet radio for correct tracking, etc. very easy, especially on the higher short-wave freqs., (assuming an IF of 465 kc/s) where it's easy to get the oscillator on the 'wrong side'.
Al.
(Post-edited by Al., 27 June: grammatical errors.)
