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<james.schatzman@...> wrote: What would be your idea - create a unit controlled via USB and have a PC as the interface? Like this sort of

Ran across these guys while designing a gas analyzer. They make all kinds of 0-Rings. http://www.applerubber.com/ Karl

wrote: Could you point out any examples of DSOs that do this? All of the modern ones I am familiar with rely on high real time sample rates and post processing to prevent aliasing if the

Dave Jones on eevblog reckons you need a sample rate of 10 times the maximum frequency you want to display in single shot mode. Can't say I disagree with him on that. So a sample rate of 40MS/s can

Thanks for the information Steve. Hopefully mine will have the 3.6 volt battery seeing as how it has the newer serial number prefix. How old do you figure your battery is to still have that voltage

Speaking of old scopes, the first digital scope I got circa 1986 was a Tek with a sample rate around 20 or 50 Msps, bandwidth 100 or 200 MHz. For repetitive signals it dithered the sample clock to

I've got an attenuator for an 8672A that suffers from failed O-rings. In this case it appears someone used something nasty to try to clean the spring contacts and attenuator pads and whatever was

Joe and all, I just had a quick look inside my 3457A again. Mine has the 3.0 volt lithium battery, SAFT LX-1634. Obsolete at Agilent, as is the newer battery. Google was no help either. Mine

Hi Peter, As I said, "any competently designed DSO". An analog scope gives you the full vertical bandwidth regardless of the timebase setting. A competently designed DSO should also. You can be a

I hadn't thought of that. I will swab things down with some De-oxit to help clean things up. Peter

But it's not just filtering above the Nyquist. There are other ways a sampling digital scope can give you a wrong picture of reality. If all of these scopes ran their digitizers constantly at full

Well, that's why I have to have so many different scopes ;-)

Hi Peter, Sometimes, on an instrument that has been in storage for a long while, corrosion on the input BNC/N connector can cause for a round of strange readings... non-linear junctions, and all

If by "trust" you mean see things faster than the Nyquist limit, I fully agree. However, any competently designed DSO won't allow signals faster than the Nyquist limit into the sampling

Try looking for abnormalities on a LORAN-A pulse, for example... a few 10s of uS of 2 MHz every few 10s of mS, or a disk drive data stream abnormality. -John =================

So I'm finally getting to unpack all my gear and set up a lab again. As part of setting up my bench I am doing basic functionality checks on the instruments I intend to use. One is a

I am no fan of Sears because tgey really screwed me over on a socket set, but they do sell a pair of screwdriver sets that use hex bits. There are two bit sets and a common handle, totalling 64 bits,

You can play with sampling specs, but 40MS/sec gives a Nyquist limit of 20 MHz. IMO, you simply cannot trust what you see on the screen of a sampling scope. -John ===========

All- Hypothetically, would it be plausible to build a VNA with custom synthesizer/detectors and the 85047A test set? There seems to be plenty of room inside the box to add the other components.