Re: Tek 317 odd trace behavior after warm-up
No specific experience with a 317, but did you replace electrolytics as well? Its old enough to give it consideration. Id also check power supplies (voltage and ripple) while its ¡°bad¡± Bad caps
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David Holland
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#145664
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Re: FYI: 017-0077-01 VP-2 Voltage Pickoff
I'm almost the same: I didn't need one, but I snapped one up at that price!
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Snappy
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#145663
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Re: Another New Guy
Hi Benjamin, So you want to relearn electronics but don't want to fix the 475 to learn ? That is confusing. 1) If you go through the 475 S/M from page-1 to last page , you will find the problem and
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Jon Batters
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#145662
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Re: 485 main vertical gain
Only took me 4 hours to figure out what they wanted. Funny stuff. I was bored anyway.
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Brendan
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#145661
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Re: 485 main vertical gain
Hey Lop Pol, I don't have the manual of the 485 (besides the page you posted), but it seems you guessed it, apparently it's calling for measuring the voltage between the 2 points... This is what's
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Fabio Trevisan
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#145660
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Edited
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Lot of 75 Tek transistors for sale in Brazil - No afiliation
Hello Group, I was browsing the local auction site from Brazil (not evil bay... but just as evil) and just saw this item:
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Fabio Trevisan
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#145659
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Re: 485 main vertical gain
Well I think when they said connect to the TP they meant it. Connect to both at the same time. Thats what I did and I think that its right.
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Brendan
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#145658
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Re: 485 main vertical gain
Ok. I'm failing at something here. I set channel 2 to the center graticule. I have 11.800V in my DVM. I turn the position pot for 12V which causes negative deflection. Turning the main gain r629 and
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Brendan
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#145657
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Re: Another New Guy
This is the spot to get some help. After reading threads for a few years, my thoughts on how to help people help you: Get the service manual(Check, good start) Get a good picture of the scope, there
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ykochcal
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#145656
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Re: femtosecond fusion
60fs is a short pulse for sure! Shortest pulse thing I designed (about 15 years ago) was frequency quadrupling 250fs pulses with 30% efficiency. It was not straightforward. 250ps is a pulse of light
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Craig Sawyers <c.sawyers@...>
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#145655
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Re: Tektronix fail
If you are a member of the group, you should see a photos button on the left side when you access the group with the web interface. You can create an album and put your pictures there. Then copy the
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Tom Miller
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#145654
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Re: Back feet for 335 scope
If you have an original foot, I can make a mold and pour plastic feet. I've already done it for some older Yaesu and Kenwood rigs. Vince. -- Michigan VHF Cor
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Vince Vielhaber
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#145653
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Re: Back feet for 335 scope
Hi Bert, That would be great. Even though the foot has the same part number on the 314, it would be good to confirm correct fit on that unit. Let's wait until I get results from Lee - I actually sent
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Jeff Davis <n0dyjeff@...>
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#145652
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Re: Back feet for 335 scope
If you would like another tester, I would be happy to volunteer. I have a 314 and a 335. Thanks, Bert
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Bert Haskins
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#145651
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femtosecond fusion
https://www.nature.com/articles/s41467-018-03445-z For all those GHz digitizer junkies out there...
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John Griessen <john@...>
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#145650
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Re: Tektronix 2445B faille..
Bonjour Patrick, Can you take a picture of the board showing the area of t he resistor? Give us a link to the picture as you cannot attach it to the message. Regards
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Tom Miller
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#145649
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Re: Another New Guy
This is the place to ask. What is your local definition? You didn't say. "I've read some of the service manual and some of the threads on here and people seem to imply that the low voltage power
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John Griessen <john@...>
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#145648
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Re: Tek 7623A (or 7000 series in general) - Poor man's choice to Signal Standardizer
Thanks Harvey, Raymond, Craig, HenkC and Roger for your last contributions (To all others as well, I can't catch up with all the answers). I must say that it's a joy to participate in this group. So
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Fabio Trevisan
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#145647
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Font for Tektronix scope front panels - Re: [TekScopes] Protecting button labels
Since this is a bit of an FAQ, I'm replying to myself in order to change the topic and make it more visible.
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toby@...
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#145646
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Re: Protecting button labels
Yeah, knowing of a harmless lacquer would be excellent info. "Fixative". I doubt this will work. It will probably rub off quickly and may also attract dirt. It's probably only good for paper. --Toby
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toby@...
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#145645
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