P6610 physical measurement amplifier
In my collection of probes, I have a P6610 physical measurement amplifier and three P6610 pressure transducers. I don't have any documentation and a search of the usual sources has come up empty. Wondering if anyone here knows anything about this probe or, better yet, has some documentation they would be willing to share.
Thanks - Bill
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Re: Old (mostly) Tek Scopes for Sale in Schenectady
Do I see a 27xx spectrum analyzer? Expensive for parts but for dirt cheap project maybe.....
The rest is landfill.
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I am here as well. On Sat, Mar 8, 2025, 4:38 AM David C. Partridge via groups.io <david.partridge@...> wrote: AFAICT I am now the only active moderator. I think we need some more
moderators.
Cheers, David
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Re: Old (mostly) Tek Scopes for Sale in Schenectady
On Tuesday 04 March 2025 11:43:29 am taitny via groups.io wrote: The Edison Tech Center is clearing out it's collection of old scopes and test equipment.
If interested, check out Some of us don't do facebook... From what I can see, it looks like they want to get rid of that stuff as one whole lot. :-( -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
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AFAICT I am now the only active moderator. I think we need some more
moderators.
Cheers, David
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I recently upgraded my TDS3012 by ethernet, there is an page on the scope's web interface to input commands.
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Old (mostly) Tek Scopes for Sale in Schenectady
The Edison Tech Center is clearing out it's collection of old scopes and test equipment.
If interested, check out
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tektronix 577 curve tracer polarity positioning fail
Hi,
the spot is always coming vertically outside the screen, when I change the polarity (about one graticule outside).
I have tested the VertPos Adj pot but it is not enough to get the points back in the correct vertical position. any suggestions?
thank you,
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You know how sometimes the Universe just sends you signals, perhaps to remind you that you are on the right path?
Well, this morning I received a phone call from the man who often supplies test equipment. He has a friend who buys up the assets of failed companies and when test stuff appears, I generally get a call. They just want rid of it and often pretty much give it away. I've bought too much to remember, however two items which spring to mind are spectrum analyzers, a HP 8569B for (the equivalent in Brazil) less than 20 Dollars and a Tek 492 for 35 Dollars. Both with failed PSU's and both fully functional following simple repairs. Insane! Although I mustn't forget the 'dead' (yet calibrated) Fluke 289 for 40 Dollars which only had a bad battery connection and is now my most accurate DMM.
Anyways, I digress... This morning, he rings me up to offer me two scopes for 50 Dollars. Would you believe it that one was a 2430A!?!? Lol
The other was/is a TAS 465 which he said was missing a board, but looking at the manual and a teardown, it appears to be complete. The problem being that it only displays a stationary 'dot' in the middle of the display.
So, opening up the new 2430A, revealed that on the top board, two tantalums had totally burned up, ironically including the 2.7?F one mentioned earlier in this thread..
Seemed reasonable to just switch the board from my blurry 2430A and sure enough the 'new' scope came to life, displaying the diagnostic menu et al.
Unsurprisingly it has various 'FAILS' however, it now gives the opportunity to switch boards and Hybrids in order to hone in on any problems.
The TAS 465 shall have to wait.
Addendum... The TAS 465 (which had been left plugged in but off) just went pffffftah! and dumped out a whole load of smoke. Guess I now know where to start.. :)
James
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Re: Tek 2236 Control Button Error
Check harmonica connectors from panel to other boards possible to reseat.
Jon
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Tek 2236 Control Button Error
Recently my Tek 2236 began giving a "Control Button Error" message, occasionally at first and now more regularly. Exercising the buttons does not seem to clear this. I ran the CTM diagnostic and everything passes except reading the 1X/10X CH1 sense ring, always indicating "P0" even when the ring is grounded (I don't know if it ever did sense correctly, as I generally used non-encoding probes anyway). In the diagnostic, it reliably reads the positions of all other switches, in particular indicating the push button positions solidly, no glitches seen in the 1/0 transitions in the diagnostic display.
Sometimes with no input I get the "OUCH" message on CH1 volts (even with the input set to ground). Otherwise, all of the CRT display functions appear unaffected.
When the CTM is working, everything works in the alphanumeric display, when not, I get the scrolling "Control Button Error" message, nothing works in any button configuration.
Anyone have any thoughts on this?
I have several Tek scopes, analog, full digital, storage (for a 5L4N) and a 4 channel. However the 2236 is my favorite for general bench work. I miss the built-in frequency counter...
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Hello, The truth is that I took a while to post because I didn’t have the money to buy the spare parts. I had to work extra hours for two months to afford them. I'm sorry.
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In fact Mark, I actually have here a HV board with a blown transformer so I can grab the resistors from that . If for nothing else other than to see what happens?
Thanks again
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Thank you Mark.
I'll look into that and let you know how it goes..
James
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Tektronix 2712 Amplitude Normalization Fail
Hello I have a 2712 that i picked up “parts only” on eBay. I replaced the two button cells and it works well aside from failing two Amplitude Normalizations.
BW Filter Ampltd (Lin) FAIL
Preamp & Det Gain FAIL
Wondering if anyone can point me in the right direction so I can fix it.
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James,
Likely the resistors to the C and B of Q145, Q152 and Q269 collector only are bad. The originals are stressed. Use 1W types. These are the same problem in the 24x5/7 series. Even if they test alright, they could be bad in operation. Get resistors physically larger to take the higher voltage drop. Ones about 10mm long work fine. Mouser has a wait of 12 weeks for 442,000 ohm resistors. A pair of 1/2W 221,000 ohm resistors in series will work.
Mark
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But this scope has a display (now).
Just ridiculously blurry
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Re: [HP-Agilent-Keysight-equipment] I need a new/used lab computer
Looks like he needs a PCI slot for gpib card. Would have to go to USB to GPIB if he went w a laptop.
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On Mar 6, 2025, at 15:27, Harke Smits via groups.io <yrrah@...> wrote:
?Jim,
Do you have anyone in your environment with a not too old laptop? Get it for a box of cigars, install an SSD and Linux Mint. You're back in business!
Best 73 de Harke
On 6-3-2025 21:24, Jim Ford via groups.io wrote:
My garage lab computer went kaput recently, and I need to get another one to control my instruments via GPIB and USB. I had a tower running Windows 7, although it was originally my wife’s computer running (ick!) Windows Vista. Sooooo slow! Anyway, I don’t need anything fancy, just a PCI slot for the GPIB card, Ethernet jack for Internet connection, and at least 4 USB jacks (kbd, mouse, USB microscope, GPSDO). Mini tower or thin client would be great. Anybody have a PC they don’t need? Thanks in advance.
Jim Ford
Laguna Hills, California, USA
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Re: I need a new/used lab computer
Well, I was hoping to get something quickly to do some experiments with the PS5004 power supply plug-ins I just bought recently. Rather painful to adjust a 20 V supply in 500 uV increments! But you are more than welcome to stop by my house. I will be on vacation from Th 3/13/25 to F 3/21/25, but a visit after that would be great. I’m right off the 5 San Diego freeway.
Thanks!
Jim
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On Mar 6, 2025, at 12:59?PM, Tom Lee via groups.io <tomlee@...> wrote:
?If you can wait a month or so, I may be able to hand-deliver it to you on my way to visit family in San Diego.
Tom
Sent from an iThing; please forgive the typos and brevity
On Mar 6, 2025, at 12:44, Jim Ford via groups.io <james.ford@...> wrote:
?Thanks, Renee. LMK. Shipping should be reasonable down here to So Cal. Jim
On Mar 6, 2025, at 12:43?PM, JAMES FORD <james.ford@...> wrote: ?Maybe. I don’t find any PCs in ewaste at work, probably because of proprietary information on the hdds. I will ask around. Thanks. Jim
Sent from my iPhone
On Mar 6, 2025, at 12:24?PM, Jim Ford via groups.io <james.ford@...> wrote: ?My garage lab computer went kaput recently, and I need to get another one to control my instruments via GPIB and USB. I had a tower running Windows 7, although it was originally my wife’s computer running (ick!) Windows Vista. Sooooo slow! Anyway, I don’t need anything fancy, just a PCI slot for the GPIB card, Ethernet jack for Internet connection, and at least 4 USB jacks (kbd, mouse, USB microscope, GPSDO). Mini tower or thin client would be great. Anybody have a PC they don’t need? Thanks in advance.
Jim Ford
Laguna Hills, California, USA
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Re: 2465A start-up problem
George,
Where is it on the spec sheet that is says 350 V NOT 500V? ,
Mark
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bill K7WXW
David C. Partridge
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