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Thank you Jean-Paul and JOE. Can you tell me how to set the active probe P6201? In any case I think it is essential to use a DC-block because the 492 does not accept any DC voltage at RF input.. Happy

Hi Barry, please reread message 187015. Albert

Yes - I was thinking it was digital noise coming from the readout character generation circuits. I tried the switch in the GATED position and that does indeed eliminate [almost] all of the gaps in the

I recently rescued a 535A from the scrap heap and/or (audio) tube thieves. I needed t as a parts donor for my 575 and have no intention of restoring the 535A, myself. It served as a mouse hotel (from

There's likely no relationship between the chopping frequency and the sweep speed.? I'd go for random. You're thinking that this behaves like digital, perhaps? Harvey

Hi Harvey, I'll see if that resolves the issue. The way that the blanks move along the trace, it seemed a more random effect than I'd expect when writing to the same locations each time but maybe not.

Do not do anything. There is one beam.? It has to be "borrowed" to write the readouts. There are two ways: 1) Borrow the beam when it's needed.? This chops tiny holes in the trace.? it's going to

Correction: The READOUT switch connects to the -15V rail through R5006, not the +15V rail. Thanks, Barry - N4BUQ

Hi, Yes, they are different. The 2430A is more in line with the 2432 and 2440. The 2430 (not A) even has a different front panel. Check right below the horizontal speed knob, the A version has more

When displaying a sine-wave where several cycles/division are present, when the READOUT is switched on, there is noticeable "noise" (for lack of a better definition) in the trace. It appears as tiny

one of my favourite channels, and this video reminds me why I subscribed ages ago! I'm an audio engineer, so if you want help improving the audio quality, let me know.

Well, count me surprised.. After pulling out R50, R51, R52 and C50 to test them (all well within spec) and reinstalling them, I am now getting the expected 8.8V at pin 6 of U50, and my output is now

Thanks! I'll make sure to send approval requests for reinventing future wheels as well.

Bonjour Attillo, we used P6201 with other scopes but not 492 Beware any FET probably is VERY delicate mechanically and static, overloading sensitive A few nanosecond transiet from statck blows the

I have used a P6201 in swept frequently situations before. The P6201 has separate signal paths for DC/low frequencies and high frequencies. If not perfectly calibrated you can see different gains in

No, not really. The Li-SOCl2 primary cell is good for ten years plus. A Li-Ion rechargeable will hold charge for a few months only. A CR2032 not really suitable - maybe good for a year or so, but 3V

Hi all i have this scope with a dead battery for the cal values etc,its 3.6v normaly,could it be replaced with either a 18650 cell or a cr2032 cell,ie 3.7/4.2v or 3v for the cr2032?

?ann fim., 30. des. 2021 kl. 06:48 skrifa?i <quadzillatech@...>: I only have a 2430, but ISTR the main difference between the two is that the 2430A has automated measurements, whereas the 2430

can anyone tell me the difference between a tek 2430A and a plain 2430,i brought one listed as a 2430A but when it arrived its a 2430 not the A variant,have i been scammed?

If it has an external video output, check that.? If that works, then the display section is probably working, narrowing that down to the? LCD display. For a completely blank display, suspect the