OK, just received a lab-volt AE 793G the same as leader LBO-522?
Off ebay for £42.
I've only ever used an oscilloscope in a college lab, and only for Hz and TTL so need some advice.
Injected RF at 20Mhz cos it's a 20 Mhz oscilloscope.
At the lowest time devision of 0.2µs and the times 5 out. I'm getting 8 peaks of a sine wave on the screen.
Is it because A) my RF genny is in need of tune.
B) The scope is up the pictures
Or C) that's what it's supposed to read.
Any ideas please?
Assuming your scope has 5 X divisions across the screen.
Set at 0.2µS/div with the Xmulti set a *1,the X sweep would be 1µSec.
With the Xmult at *5 the sweep would be 0.2µSec
The period of a 20MHz sine wave is 0.05µSec.
So would expect to see 4 positive half cycle peaks. ie 4 cycles.
If it was mult *10 it would be 8 cycles
EDIT:
In line with on1aag, IF you have 10 X divisions marked on the scopes graticule, it OK, IF only 5 X divs then its wrong.
How many marked X divisions are there on the graticule .??
200nS and the 5x multiplier depressed gives you 40 nS/div.
10 horizontal divisions are 400 nS.
The period of a 20 MHz signal is 50 nS.
There will be eight periods on the screen.
Looks fine to me.
Yes, we all go thru watching audio on the scope, try watching the video signal on your TV' s A/V socket.
What frequancy for video? This only goes to 20Mhz.
Oh, yeh! And this scope has TV-H and TV-V.
Will that make a difference on video out or is that just for TV internal signals?
Yes, we all go thru watching audio on the scope, try watching the video signal on your TV' s A/V socket.
What frequancy for video? This only goes to 20Mhz.
Oh, yeh! And this scope has TV-H and TV-V.
Will that make a difference on video out or is that just for TV internal signals?
But the TV-H and V helped me to understand the signal better. They are in fact used to pick out the horizontal and vertical sync bits of the composite signal.
But the TV-H and V helped me to understand the signal better. They are in fact used to pick out the horizontal and vertical sync bits of the composite signal.
But the TV-H and V helped me to understand the signal better. They are in fact used to pick out the horizontal and vertical sync bits of the composite signal.