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Re: HP 334A Balance Pots
I'd considered doing that as well but I've read horror-stories where some "cleaners" have dissolved the carbon track rather unexpectedly. Thanks, Barry - N4BUQ
By n4buq · #104743 ·
Re: 4195A question
On that note, I have calibration and verification software for many, many different instruments that I got from a calibration house that shut down. It will be awhile before I will be able to image the
By Dave McGuire · #104742 ·
Re: HP 334A Balance Pots
I wondered about doing something similar and have experienced what you're describing as well. Even though they're W-W, I also wondered if a ten-turn pot would work well and may give it a try (outside
By n4buq · #104741 ·
Re: 4195A question
Tobias - I'd like to correspond off line about how you did the translation. I'd like to do the same for the 8340 and some other equipment I have. As I said, I have an 9000/300 system and a good hpib
By Bruce · #104740 ·
Re: HP 334A Balance Pots
?My 332A's COARSE pot did not respond adequately to cleaning. I replaced it. I do not like concentric controls in this application - it's too easy for FINE motion to nudge COARSE slightly. I drilled a
By Dave Wise · #104739 ·
Re: 4195A question
I would really like to get a copy of both the original version and your reimplementation, if you're willing to share them. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
By Dave McGuire · #104738 ·
Re: 4195A question
Excellent, I have a Prologix adapter, use it all the time. I'd welcome a copy of your PY prog. You can privately email me: hp at quackers dot net. Again, thanks.
By Bill E · #104737 ·
Re: 4195A question
Would you be willing to share the software (both versions)? I'm building an HP 9000/300 system and a GPIB analyzer as a platform to translate HP verification SW to more modern languages. This would be
By Bruce · #104736 ·
Re: 4195A question
Bill, I have the cal. software ( HP BASIC). As you said, it needs a lot of specific HP gear, but I re-wrote it in Python so it can be run on a modern PC with Prologix GPIB USB adaptors. And it is
By Tobias Pluess · #104735 ·
Re: Racks for older equipment
Yes, the "real" ones for restaurant use are NSF-rated and very, very sturdy. With lots of restaurants unfortunately going tits-up nowadays due to covid19 shutdowns, there will be a flood of commercial
By Dave McGuire · #104734 ·
Re: HP 334A Balance Pots
I have had some luck by prying the covers off for cleaning and then crimping the tabs back. Can't be done where the pots are stacked. AB were the best of the bunch are a pain to clean. Ohmite sold
By Richard Knoppow · #104733 ·
Re: 5343A troubles
On 4/10/20 1:48 PM, Daniel Sheen wrote: > I have a rather bizarre problem with a 5343A counter. Observed symptoms > are that the high frequency input works reliably up to about 250MHz, > reads garbage
By Dave McGuire · #104732 ·
Re: Racks for older equipment
These are also called Metro racks and are used extensively in restaruants. Check your local craigslist and auction sites. The commercial ones can handle 800 lbs per shelf(!) I've found a couple of the
By Paul Amaranth · #104731 ·
Re: Racks for older equipment
I have a whole bunch of these shelving units in my house, some for books, some used as lab benchtop shelving and some used for random stuff. One can even buy plastic mats of various sizes and colors
By Dave Daniel · #104730 ·
Re: HP 334A Balance Pots
Barry, I have one of these instruments, but it is too buried to easily allow inspection to determine what type of pots were used.? If the values are above 1k, they are probably not wire-wound.? If
By ebrucehunter · #104729 ·
Re: Craigslist HP 8566B Indianapolis
Hmmm...it took me something like eight years to find a working 8566B pair, with cables, at a reasonable (meaning what I could afford) price ($1100). That was maybe five years ago, and I¡¯ve paid
By Dave Daniel · #104728 ·
Re: Racks for older equipment
OOPS I think the Trinity shelves/cart things are back https://www.costco.com/trinity-ecostorage-3-tier-40.5%e2%80%9d-x-18%e2%80%9d-x-36%e2%80%9d-cart%2c-chrome.product.11469945.html Is this what is
By Wallace Gasiewicz · #104727 ·
5343A troubles
Hi all, I have a rather bizarre problem with a 5343A counter. Observed symptoms are that the high frequency input works reliably up to about 250MHz, reads garbage from around 250MHz-800MHz, and then
By Daniel Sheen · #104726 ·
Re: Racks for older equipment
Thanks for the input by all of you. OK I take it that rolling wire racks are a good idea, I wanted to order one or two carts from COSTCO but apparently the lower ones are not available even from the
By Wallace Gasiewicz · #104725 ·
Re: 4195A question
Hello, I would try chucking in 150USD, going up to 250 if SHTF. These units cost a rabbis ransom normally, if you do not - like I did - get them for a good price. Tam --- With best regards Tam HANNA
By Tam Hanna · #104724 ·
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