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Re: 4195A question
Yup, definitely interested. It's a lot of stuff and I'm spread a bit too thin. -Dave
By Dave McGuire · #104751 ·
Re: 4195A question
I'll be doing that too; I have quite a lot of that hardware. I still have to get things set up, get RMB loaded, etc. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
By Dave McGuire · #104750 ·
Re: 4195A question
I could also verify the software for anything requiring HP 9000 / 300 computers Quoting Dave McGuire <mcguire@...>:
By Bruce · #104749 ·
Re: 4195A question
Put me on the list to notify as you get to them. I could help if you are interested in help. Cheers! Quoting Dave McGuire <mcguire@...>:
By Bruce · #104748 ·
Re: HP 334A Balance Pots
I've had pretty good luck prying open variable resistors, but you have to be very careful about breaking off the tabs. Only bend them out as much as is absolutely necessary, and if possible, try to
By Dave McGuire · #104747 ·
Re: 5343A troubles
Have you done a very thorough inspection of the input connector and checked it for any play (looseness)? If loose then check the cable connection on the inside of the input connector for any hardline
By Don Bitters · #104746 ·
Re: HP 334A Balance Pots
Poor choice of cleaning chemicals often results in a bad day. Cleaning chemicals that were formulated specifically for this application tend to be a lot more expensive than those that were not, but we
By Dave McGuire · #104745 ·
Re: HP 334A Balance Pots
I may try prying them open as well so as to be a bit more careful about how I'm cleaning things in there. Thanks, Barry - N4BUQ
By n4buq · #104744 ·
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 ·
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