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Re: Tek 335 Rear Feet
Thanks for the tip. I also found it at eplastics.com for half the cost and in lengths less than 5 feet (I only need a small length). Don't know about shipping yet, but no doubt it'll be more than
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Thanks for the tip. I also found it at eplastics.com for half the cost and in lengths less than 5 feet (I only need a small length). Don't know about shipping yet, but no doubt it'll be more than
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By
J Hite
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#112263
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Re: TEK 2465 with screen issues.
Yeah, that's the idea.
I'd be very surprised if EAROM failure manifested this way. I'd expect the scope to fail POST with 04-level errors, as there's checksumming over the EAROM contents.
In your
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Yeah, that's the idea.
I'd be very surprised if EAROM failure manifested this way. I'd expect the scope to fail POST with 04-level errors, as there's checksumming over the EAROM contents.
In your
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By
Siggi
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#112262
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Re: TEK 2465 with screen issues.
Hi sadosp Try again and look closely; are the characters you turned on with ch 3,4 positioned exactly over the dots?
I think tinkerer suggested this test as a diagnostic, not a repair, reset or
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Hi sadosp Try again and look closely; are the characters you turned on with ch 3,4 positioned exactly over the dots?
I think tinkerer suggested this test as a diagnostic, not a repair, reset or
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By
Chris Kenny
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#112261
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Re: TEK 2465 with screen issues.
Hi Tom. Just see your message. I will try it, and respond back here.
Panos.
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Hi Tom. Just see your message. I will try it, and respond back here.
Panos.
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By
Panos
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#112260
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Re: Tek HV transformers and potting compounds, Nice thermal IR picture of a 576 EHT
Yes nice. Grrr... I have an IR thermometer but now I also need an IR camera!
Albert
=====
Nice thermal IR picture of a 576 EHT in message 15:
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Yes nice. Grrr... I have an IR thermometer but now I also need an IR camera!
Albert
=====
Nice thermal IR picture of a 576 EHT in message 15:
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By
Albert Otten
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#112259
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Re: TEK 2465 with screen issues.
Hi tinkerer. I try what you suggest, and the result was to see the characters for each channel etc. But when turn the channels back, character disappear and dot return back on its position.
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Hi tinkerer. I try what you suggest, and the result was to see the characters for each channel etc. But when turn the channels back, character disappear and dot return back on its position.
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By
Panos
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#112258
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Re: TEK 2465 with screen issues.
Hi Panos,
Before you do anything else, read up in the maintenance section about the Cycle error clear (exerciser 03) process. In my manual, it starts on page 6-16. You will need to place the
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Hi Panos,
Before you do anything else, read up in the maintenance section about the Cycle error clear (exerciser 03) process. In my manual, it starts on page 6-16. You will need to place the
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By
Tom Miller
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#112257
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Re: TEK 2465 with screen issues.
I'd still bet on the readout board.
I count 32 characters and dots across the screen, which corresponds to the number of character positions in the readout machinery. Maybe your character RAM is
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I'd still bet on the readout board.
I count 32 characters and dots across the screen, which corresponds to the number of character positions in the readout machinery. Maybe your character RAM is
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By
Siggi
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#112256
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Re: Tek HV transformers and potting compounds, Nice thermal IR picture of a 576 EHT
Albert
Thanks for the key words, I thought I had searched and found all the HV/EHT
pages, but had missed the
Nice thermal IR picture of a 576 EHT in message
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Albert
Thanks for the key words, I thought I had searched and found all the HV/EHT
pages, but had missed the
Nice thermal IR picture of a 576 EHT in message
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By
ykochcal
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#112255
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Re: Tek HV transformers and potting compounds
I believe one recent discussion occurred about two months ago regarding
the transformers in the 310 series scopes. Do a search on "310
transformer" and the series of emails will pop up. I'm sure
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I believe one recent discussion occurred about two months ago regarding
the transformers in the 310 series scopes. Do a search on "310
transformer" and the series of emails will pop up. I'm sure
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By
Mike Dinolfo
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#112254
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Re: Tek HV transformers and potting compounds
Why don't you do a search at this website? For instance "HV transformer potting 576" helps immediately.
Albert
---In TekScopes@..., <John@...> wrote :
Sorry to ask what might be an
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Why don't you do a search at this website? For instance "HV transformer potting 576" helps immediately.
Albert
---In TekScopes@..., <John@...> wrote :
Sorry to ask what might be an
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By
Albert Otten
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#112253
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Tek HV transformers and potting compounds
Sorry to ask what might be an "old" question, but do I recall seeing extensive discussions here a while back on failures of HV transformers, and the compound either being culpable, or just making
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Sorry to ask what might be an "old" question, but do I recall seeing extensive discussions here a while back on failures of HV transformers, and the compound either being culpable, or just making
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By
John
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#112252
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Re: TEK 2465 with screen issues.
The calibration procedure is tricky but if you think the problem is with the
EAROM, I have seen the ER1400 for sale on Ebay for reasonable prices.
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The calibration procedure is tricky but if you think the problem is with the
EAROM, I have seen the ER1400 for sale on Ebay for reasonable prices.
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By
David Hess
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#112251
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Re: what exactly is a de-skew test fixture used for?
Deskew is also needed for fast differential probes.The signal is applied to both inputs of the probe, which can then be adjusted for a Zero output.A fixture may have been provided with some of them,
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Deskew is also needed for fast differential probes.The signal is applied to both inputs of the probe, which can then be adjusted for a Zero output.A fixture may have been provided with some of them,
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By
HankC, Boston, WA1HOS
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#112250
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Re: Tek 335 Rear Feet
Delrin, and several other plastics, can be ordered in rods, bars,
sheets, tubes, etc from mcmaster.com.
[Non-text portions of this message have been removed]
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Delrin, and several other plastics, can be ordered in rods, bars,
sheets, tubes, etc from mcmaster.com.
[Non-text portions of this message have been removed]
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By
Mike Dinolfo
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#112249
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Re: Tek 335 Rear Feet
Any idea where Delrin might be available in small quantities? I figure I'd need a "stick" of it, maybe 1" x 1" x 5-6" long.
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Any idea where Delrin might be available in small quantities? I figure I'd need a "stick" of it, maybe 1" x 1" x 5-6" long.
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By
J Hite
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#112248
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Re: Tek 335 Rear Feet
I don't own a 3D printer, but that does sound enticing assuming there is base material available similar to rubber (I'd guess durometer 60 or so). Maybe the person you mention could make 335
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I don't own a 3D printer, but that does sound enticing assuming there is base material available similar to rubber (I'd guess durometer 60 or so). Maybe the person you mention could make 335
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By
J Hite
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#112247
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Re: TEK 2465 with screen issues.
Garry wrote....
Yes indeed! :-)
Tinkerer138 wrote...
No I didn't. I believe cause oscilloscope have lost some of its calibration data. Worse yet, maybe the EAROM ic has reached the end of his
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Garry wrote....
Yes indeed! :-)
Tinkerer138 wrote...
No I didn't. I believe cause oscilloscope have lost some of its calibration data. Worse yet, maybe the EAROM ic has reached the end of his
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By
Panos
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#112246
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Re: Tek 335 Rear Feet
I know what you mean about the material breaking all to pieces... I've had several do that. The stuff doesn't bond well to glue either. I have one that has a big piece broken off of it and I've
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I know what you mean about the material breaking all to pieces... I've had several do that. The stuff doesn't bond well to glue either. I have one that has a big piece broken off of it and I've
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By
ae5i@...
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#112245
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Re: TEK 2465 with screen issues.
Many times I have repaired very valuable test instruments that were
completely disabled by a single bad solder joint. The component lead would
be making a physical contact at the time of manufacture
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Many times I have repaired very valuable test instruments that were
completely disabled by a single bad solder joint. The component lead would
be making a physical contact at the time of manufacture
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By
Gary Robert Bosworth
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#112244
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