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Date
Re: HP 8350B sweeper behavior
The wet Ta caps that I'm familiar with, and like to use, have a glass seal around the pos. lead. This one appears to have a rubber seal, but the odd thing is that the leak appears to have been at the
By Jim Adney · #140462 ·
Re: HP 8350B sweeper behavior
I did a very thorough selection before choosing the cap with the best dimensions ;-) Do you know the magnitude of currents going into the YTO's coil? Since the capacitor is in parallel to the coil,
By Martin · #140461 ·
Re: HP 8350B sweeper behavior
:-) Apparently there is no damage to the traces. I used a glassfibre-brush to get the dirt off. These traces only lead to the test points, so no functional impact. cheers Martin
By Martin · #140460 ·
Re: HP 16500C looking for logic analyser boards that are functional
I just wanted to be clear that when we were talking about the various VIA on the board this is the sort of problem I should be going after? I put red circles next to the things I was planning to go at
By Damien Towning · #140459 ·
Re: HP 8350B sweeper behavior
If finding reasonable wet Ta caps is difficult or outrageous, you can do some experiments with Al types, with proper selection and testing, and acceptance of good but not necessarily perfect original
By Ed Breya · #140458 ·
Re: How do I update HP 3488A manuals in the Wiki?
Does Artek have it? DaveD
By Dave Daniel · #140457 ·
How do I update HP 3488A manuals in the Wiki?
I bought a HP 3488A Switch/Control unit. Our Wiki has a 3499 manual with the 3488 manuals, and I have seen better versions of the manuals. Since I own a unit I thought I¡¯d take ownership of the
By Steve Holland · #140456 ·
Re: HP3400A Nonlinearities
Thank you - if I had took a few to actually think it over that would have been kinda obvious.? Thanks for being patient and answering ;-) Hal
By Harold Foster · #140455 ·
Re: HP 16500C looking for logic analyser boards that are functional
I have two things. The users reference and the programmers guide. From what I can glean in the users reference it should pop up some sort of programing interface via telnet. From the user guide, "?
By Damien Towning · #140454 ·
Re: HP 16500C looking for logic analyser boards that are functional
I think the 16700 and possibly the 16600, which run HPUX on a PA-RISC processor have a telnet client but not the 16500. It does have some open ports but they don't respond to what i've tried (SCPI
By Adrian Godwin · #140453 ·
Re: HP 3400A Upgrade PCBs Available
Which is an LT1012 - I was very surprised to see that they used such a precision amp on purpose - the precision is not needed there other than to possibly not have a negative output; even in the 3400B
By Harold Foster · #140452 ·
Re: HP 8350B sweeper behavior
After all of this, I need to: 1. remove/replace the battery 2. check/replace that cap Mark ________________________________ Sent: Monday, November 20, 2023 1:17 PM To:
By Mark Bielman · #140451 ·
Re: HP 3400A Upgrade PCBs Available
Thank you Hal, those pictures should have all the missing information, I can see they removed a double thickness ground trace from the front and made a much wider trace on the back, it confirms the
By factory · #140450 ·
Re: HP 3400A Upgrade PCBs Available
My board was a revision "D" and I uploaded pictures to the 3400A area of the files section. Hal
By Harold Foster · #140449 ·
Re: HP 8350B sweeper behavior
Just from your description I knew it's a wet-slug Ta type. These were used in certain spots where fairly high capacitance is needed, with low leakage. When it opened up, there went the CW filter
By Ed Breya · #140448 ·
Re: HP 8350B sweeper behavior
Those are very very special caps. They are made to insure that the equipment fails after a number of years. The acid that leaks out will dissolve PC traces. Make sure you clean any residue off. I use
By paulswed · #140447 ·
Re: HP 3400A Upgrade PCBs Available
Below is a partial screengrab showing what the dropbox email from Artek contained, from this you should be able to make out the Agilent front page on the second file, I've sent a message, hopefully
By factory · #140446 ·
Re: HP 3400A Upgrade PCBs Available
Thanks to both Hal & David for info. The 03400-60013 manual covers 03400-66512 Rev A (prefix 2225) & Rev C (prefix 2415). As has been suggested elsewhere, it's most possible the Rev D was only covered
By factory · #140445 ·
Re: HP3400A Nonlinearities
The custom scale compensates for nonlinearity in the meter movement itself, not the instrument the meter is installed in. Dave Wise ________________________________ Sent: Monday, November 20, 2023
By Dave Wise · #140444 ·
Re: HP 8350B sweeper behavior
Hi all, I can hardly believe what I saw when I took out the A6-board. A capacitor with only one leg... what the heck is so special about this one that its so different to all the others - and leaking,
By Martin · #140443 ·