开云体育

I have sitting next to eachother a 34401A, a 3457A and a Keithley 2000, and because of readability I use the 34401A as my daily meter. My 2cts

Majority of working 34401A units usually sell for $160-$290 which is really not greatly more expensive than 3457 That's why I decided to keep mine and not sell it! yes, some people also paid >$350 for

I also have the 3457 and it works great. No serial port, at least on mine - HPIB - but I prefer that. Mark

I recmmend the HP 3457. Good voltmeter and relatively inexpensive - less expensive to ship (lighter) - and more reliable than the 3456. Cheers! Quoting Paul Amaranth <paul@...>:

The 3456a is probably the best deal you can find. I haven't ever had a problem with mine and it's 6.5 digits. It's not really hard to find them under $100 in working condition (I paid $75 for mine and

Hi All, ? I am wondering what sort of DVM the collective wisdom here might suggest for precision work. ? I am working on a project for work that involves designing a precision voltage controlled

Greetings all, I need to make some room in my lab again (happens too often) , so I have the following equipment for sale: * HP 8566B Spectrum Analyzer with interface cables - $500 * HP 8902A Measuring

Not mine, but I thought someone might be interested https://indianapolis.craigslist.org/ele/7097424406.html Wally KC9INK

I have both of those models as well that I purchased very inexpensively at an estate sale a few years ago and this conversation has prompted me to drag those out and see the operational status of

Not that it means anything but I do see a neon glow from the photo cells and it appears to be glowing bright. It looks as if someone has worked on this thing at some point because wire positions are

Hi Andreas, There is two different Non-volatile/zero-power ram chips in the module. Both have their own internal backup battery. So the battery in one of them is probably bad. I would replace both, as

Hi Matthew, the self test menue has an explicit function that tests RAM and it runs thru without error messages. The problems seem to occur in the nonvolatile memory of the HP54657A module. The

Dave, This looks way better, and might now work, but if it was mine I would clean on it some more. Looking at your hi res photo, there is still some crud around the anode of CR8, around the pin 1 and

Hi Kurt, Thanks for great suggestions. I tried the following on the board and am ready to replace capacitor and start testing. 1) Isopropyl Alcohol and Q tip. Mixed results. 2) Xylene (goof off) is

I've seen reports of bad trimpots on the XY board causing display issues on the 8753A/B. However I had a B with CRT issues and didn't find any bad pots. It did respond well to CRT rejuvenation and I

In the future, clean the boards with 100% alcohol and blow dry with compressed air. Best to wash off with de-ionized water but the alcohol alone will work.? Do a final rinse with the alcohol after

I could help you with that.? Can you tell me the problem?? Is it just the oscillator or the receiver/analyzer or do you not know? George Hnatiuk EMAIL:? ghnatiuk@...

Dave, I do quite a bit of work on IFR service monitors, and have seen this problem many times, both with tantalum and aluminum electrolytics.? I use alcohol and toluene as solvents, and find that I

I'm sorry Michael, I misremembered. Before I looked in the manual, I remembered lamps, of some sort, and CdS photoresistors, and it registered as a choppers. It is actually a Wien Bridge. Three of the

Collective wisdom, y'all. Stay safe...now that Jzonsson de Peffel also got ill, I am starting to worry a bit. To me, he appeared as the pinnacle of a healthy happy strong man... With best regards Tam