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Re: 561B Recapping
If it aint broke don't fix it!!!Running several 561As & 565 in original condition with NO issues.That is the norm for 500 series gear.Bernie Schroder
If it aint broke don't fix it!!!Running several 561As & 565 in original condition with NO issues.That is the norm for 500 series gear.Bernie Schroder
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By
widgethunter <tubesnthings@...>
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#160168
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Re: 3.5mm connector for SD24 sampling head...
How extensive is the damage? If it's just the thread, a fine triangular needle file will fix that.
If the side has been pushed in so it is no longer round, but not too badly damaged, it's a bit more
How extensive is the damage? If it's just the thread, a fine triangular needle file will fix that.
If the side has been pushed in so it is no longer round, but not too badly damaged, it's a bit more
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By
Reginald Beardsley
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#160167
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Re: From 2014: Tektronix Announces Winner of Europe’s Oldest Working Oscilloscope Contest
That D suffix indicates Delay line, not Distributed amplifier. (So you could view the edge that triggered the sweep.) Tek's first distributed-amp scope was Type 517.
Dave Wise
That D suffix indicates Delay line, not Distributed amplifier. (So you could view the edge that triggered the sweep.) Tek's first distributed-amp scope was Type 517.
Dave Wise
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By
Dave Wise
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#160166
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Re: 11801 NVRAM
Albert,
The signal is 20 mVpp, so that is the full ramp in the image. I just posted more in response to Bob Koller.
My calculation of the frequencies required is not correct. Not sure what I got
Albert,
The signal is 20 mVpp, so that is the full ramp in the image. I just posted more in response to Bob Koller.
My calculation of the frequencies required is not correct. Not sure what I got
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By
Reginald Beardsley
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#160165
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Re: PM for a working Tek 577 with D1 storage Curve Tracer
Kevin,
My 577 had been sitting for some time in storage. It had some balky switches. I have found that cleaning those switches with non-working latches will bring them back to proper function.
Kevin,
My 577 had been sitting for some time in storage. It had some balky switches. I have found that cleaning those switches with non-working latches will bring them back to proper function.
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By
Mlynch001
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#160164
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Re: 11801 NVRAM
These patents may provide some information, Google will get you there:
US4755742, US4678345A, US 4727340A
These patents may provide some information, Google will get you there:
US4755742, US4678345A, US 4727340A
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By
Bob Koller <testtech@...>
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#160163
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Re: 11801 NVRAM
Your 11801 version and date match my recollection.
I've been pondering how they generate signals at differential increments of 10 femtoseconds. At 1024 points and 1 ps/div I'm seeing a sequence of 4
Your 11801 version and date match my recollection.
I've been pondering how they generate signals at differential increments of 10 femtoseconds. At 1024 points and 1 ps/div I'm seeing a sequence of 4
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By
Reginald Beardsley
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#160162
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Re: 11801 NVRAM
Hi Reg,
I try to understand what's going on but don't see it. What is wrong in the following reasoning?
The trigger and ramp periods are equal to and almost equal to 10 us, with a difference of 10^-6
Hi Reg,
I try to understand what's going on but don't see it. What is wrong in the following reasoning?
The trigger and ramp periods are equal to and almost equal to 10 us, with a difference of 10^-6
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By
Albert Otten
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#160161
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Re: 11801 NVRAM
Regarding TB board EPROM:
My 11801B has 1993 and 1994 dated FW v 4.01 and 4.03 respectively.
I have an 11801 TB board from a parts unit with FW date 1991, v10.11
These two sets of FW have very
Regarding TB board EPROM:
My 11801B has 1993 and 1994 dated FW v 4.01 and 4.03 respectively.
I have an 11801 TB board from a parts unit with FW date 1991, v10.11
These two sets of FW have very
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By
Bob Koller <testtech@...>
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#160160
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Re: 11801 NVRAM
My scope is an 11801. That should be visible in the screen photo I posted. Based on the dates on parts it is 1989 production. It is enough different from the 11801C that it was obvious from the
My scope is an 11801. That should be visible in the screen photo I posted. Based on the dates on parts it is 1989 production. It is enough different from the 11801C that it was obvious from the
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By
Reginald Beardsley
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#160159
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Re: WTB: 214, 224 handheld scopes and accessories for others
Hi, I have a lilttle collection of these scopes too, two 221, two 213, two 214, one 222, and a THS730, and a Fluke97.
I have experience fixing power supplies from 221 and
Hi, I have a lilttle collection of these scopes too, two 221, two 213, two 214, one 222, and a THS730, and a Fluke97.
I have experience fixing power supplies from 221 and
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By
Miguel Work
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#160158
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Re: PM for a working Tek 577 with D1 storage Curve Tracer
Generally speaking, there are no must do's for the 577.
They are very reliable.
Well, perhaps a few, if you have the storage version:
1) learn how to use it without burning the storage mesh
when
Generally speaking, there are no must do's for the 577.
They are very reliable.
Well, perhaps a few, if you have the storage version:
1) learn how to use it without burning the storage mesh
when
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By
Chuck Harris <cfharris@...>
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#160157
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Re: OFF TOPIC- Fluke handhelds
There is “fluke-dmm@groups.io”.
There is also a Yahoo fluke group. I don’t know the name of it offhand.
DaveD
Sent from a small flat thingy
There is “fluke-dmm@groups.io”.
There is also a Yahoo fluke group. I don’t know the name of it offhand.
DaveD
Sent from a small flat thingy
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By
Dave Daniel
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#160156
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Re: OFF TOPIC- Fluke handhelds
Check out the Fluke-DMM group here.
Check out the Fluke-DMM group here.
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By
Kevin Oconnor
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#160155
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PM for a working Tek 577 with D1 storage Curve Tracer
There has been frequent postings on various repairs for broken 577 CTs. However, mine is working ok, given its age and typical senior citizen arthritis issues.
I don’t want to fix what ain’t
There has been frequent postings on various repairs for broken 577 CTs. However, mine is working ok, given its age and typical senior citizen arthritis issues.
I don’t want to fix what ain’t
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By
Kevin Oconnor
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#160154
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3.5mm connector for SD24 sampling head...
Hi,
I have an SD24 sampling head that is otherwise ok, but has a
3.5mm connector that was banged into a wall by the previous
owner. The connector leading edge is peened over a little bit.
Finding a
Hi,
I have an SD24 sampling head that is otherwise ok, but has a
3.5mm connector that was banged into a wall by the previous
owner. The connector leading edge is peened over a little bit.
Finding a
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By
Chuck Harris <cfharris@...>
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#160153
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want to buy 4S3
Hi everyone , I would like to buy or maybe trade for a 4S3 plug-in . I dont mind if it is non-functional or even if it has no probes with it , it is the one part of my 661 system that I have not been
Hi everyone , I would like to buy or maybe trade for a 4S3 plug-in . I dont mind if it is non-functional or even if it has no probes with it , it is the one part of my 661 system that I have not been
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By
Brian
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#160152
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OFF TOPIC- Fluke handhelds
I am also interested in project Fluke "Scopemeter" hand helds. If anyone has a project or two for sale, please let me know. If anyone knows of a group similar to this one but devoted to Fluke, please
I am also interested in project Fluke "Scopemeter" hand helds. If anyone has a project or two for sale, please let me know. If anyone knows of a group similar to this one but devoted to Fluke, please
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By
greenboxmaven
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#160151
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WTB: 214, 224 handheld scopes and accessories for others
Thanks to responses from others on this list, I now have a few Tektronix hand held scope projects, and looking for a few more. I would like to add a 214 and 224 to my collection. I am also looking
Thanks to responses from others on this list, I now have a few Tektronix hand held scope projects, and looking for a few more. I would like to add a 214 and 224 to my collection. I am also looking
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By
greenboxmaven
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#160150
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Re: Tek 576 Curve Tracer HV Transformer winding
My wife is not that hard to get along with. She knew what was going on and was letting me know that the core was probably ready to attempt to separate. All she wanted to know after that was “did
My wife is not that hard to get along with. She knew what was going on and was letting me know that the core was probably ready to attempt to separate. All she wanted to know after that was “did
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By
Mlynch001
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#160149
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