One more thing - what if there's X-Y interaction in the deflection amplifiers, due to coupling via the power supplies? Ed
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Re: Tek Blue Paint - the story goes on ... :-)
Dave I have stripped a lot of Tektronix scopes. First, never use oven cleaner. I have used it on motorcycle parts and it is highly corrosive to aluminum. Second, aircraft stripper is not necessary either. I always have used the lightweight paint stripper from the hardware store which has worked just fine. If you want to see pictures of just some of my repaints take a look at my google photos.
John.
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I'd recommend looking at some 7104s, and comparing them to the 2467s. Don't they both use the same CRT type? If the 7104 appears much better with respect to geometry, then it may be worth looking into the details to see if the associated circuits and adjustments differ. Or, maybe the CRT mounting method and environment can explain some differences in the magnetic fields around the CRT.
Ed
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Re: 577 Curve tracer ringing CRT and noisy step generator
Having repaired several of these, apart from PSU problems (low value caps, o/c diodes etc), most problems are with the really bad IC sockets, which in worst case you will need to replace. Other than that the op-amps can be just weird, many faults can be cured by replacements. I had one that had uncurable glitches on the trace and added 0.1uF caps across the power rails right on some of the logic chip power pins, can't remember which, sorry. One had a collector transformer breaking down, eventually burned out, not fun. That was fine until collector volts turned up...........then arcing.
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
On Tue, Mar 12, 2019 at 10:59 PM, Raymond Domp Frank wrote:
I will upload it to TekWiki (another invaluable resource) tonight or tomorrow
so it will be available for all.
Upload to TekWiki is done. Raymond
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Hi Jon,
There is no optical zoom on this camera/phone. The
electronic zoom just reduces the pixel count without
changing the "size" of the finished picture as described
in the meta data. If I thought is was majorly important
I would have brought out my Nikon D3... it isn't.
Everything you need to know can be seen by observing how
the trace weaves in and out of the graticule lines.
There is no Geometry setting that will make the center
line better. It is bowed even more upwards with the
Geometry control in more clockwise positions.
It could be a bad CRT. It doesn't look like the scope has
been hit hard on any surface. I didn't have to straighten
the metal case at all... no dents, no scratches. There is
a slight ding on the left side of the CRT bezel, above the
intensity control.
But, I have no idea of the history of this scope. It clearly
has undergone several repairs, or attempts at repairs. New
attenuators, new U800, new Zaxis hybrid, and new trigger
hybrid, as I recall.
For all I know, the reason the scope shows no signs of being
dropped, is because the previous owner replaced all of the
broken parts (attenuator, CRT, case, bezel...).
-Chuck Harris
Jean-Paul wrote:
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Show quoted text
Chuck: UGH! I understand your frustration. This is the best setting of GEOM = full CCW? The 4 I have are either 100% or just slightly off grid. Only the 2467B is noticable.
Tip on scope photo distortion: The closer you get and the wider the lens, the more distortion, normally barrel, 1-4%.
You can minimize by zooming in 2..4X and thus use equiv of telephoto rather than wide angle.
Jon
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
To all who responded on this topic:
H?kan Hintze (he proves to be an open treasure pit again!) sent me a scan of the 318|338 operator's manual.
I will upload it to TekWiki (another invaluable resource) tonight or tomorrow so it will be available for all.
Thanks to all who responded!
Raymond
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Chuck: UGH! I understand your frustration. This is the best setting of GEOM = full CCW? The 4 I have are either 100% or just slightly off grid. Only the 2467B is noticable.
Tip on scope photo distortion: The closer you get and the wider the lens, the more distortion, normally barrel, 1-4%.
You can minimize by zooming in 2..4X and thus use equiv of telephoto rather than wide angle.
Jon
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Re: Help needed to repair the Telequipment D54 Oscilloscope
Did you ever make any headway on this? ..I've got a 'functional' D54 so maybe ...stare and compare
Jim
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Re: DC508 HELP with PHOTOS option 7
Hi Dennis, Se page 17-3 You need to interconnect 14B, 15B, 16B, 17B, 18B and 18A Best regards Miguel -----Mensaje original----- De: [email protected] [mailto: [email protected]] En nombre de Dennis Tillman W7PF Enviado el: martes, 12 de marzo de 2019 21:30 Para: [email protected]Asunto: Re: [TekScopes] DC508 HELP with PHOTOS option 7 Hi Miguel, Because of your posts about Option 7 I decided to finish hooking up my DC508 Option 7 to my TR502 Tracking Generator. The one thing I am missing is the wiring diagram for the TM503 Main Frame. The interconnect wiring diagram should be on a sheet of paper contained in the Field Modification Kit 040-0789-00. I have jumpers from a different Field Modification Kit so all I need to know is which DC508 rear interconnect contacts go to which TR502 rear interconnect contacts. Can you send me a copy of the sheet with the wiring diagram interconnections from 040-0789-00. Dennis Tillman W7PF
-----Original Message-----
From: Miguel Work
Sent: Wednesday, March 06, 2019 11:54 AM
Hi, I had bought a DC508 option 1 for my TR502 7L14. I need to install
option7, TM503 is option7, manual is very clear, but It will be very
useful a detailed photos from cables and connector. Has some body one
and can post some photos?
Thanks
Regards
Miguel -- Dennis Tillman W7PF TekScopes Moderator
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
On Tue, Mar 12, 2019 at 09:07 PM, Kyle Rhodes wrote:
I¡¯ll check and if so look at how feasible it would be to scan it
Thanks for considering that, Kyle, You probably understood that I'm not looking for the self-evident parts in a user manual but hoping for some nice surprises. It seems likely that the 318 has more tricks than just the simple, self-evident ones. I'd appreciate if you could have a look and maybe just scan the TOC first, where I could see what I'd be interested in because the whole document may be too much to scan. Since I live in the Netherlands, sending a photocopied manual probably would be too expensive, although obviously, I'd reimburse you for any costs. Let's see where your initial effort leads to. Thanks in advance. Kind regards, Raymond
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Re: Tek Blue Paint - the story goes on ... :-)
If you are worried about attacking the aluminum, avoid the use of oven cleaner as posted above. Oven cleaner is based on sodium hydroxide (lye). While it is not problem for cast iron as in a metal lathe, it instantly attacks aluminum, creating explosive hydrogen gas in the process. The aluminum panels in many Tek instruments are not actually painted, but rather clad with vinyl, which can be stripped with several solvents that are slightly less dangerous than methylene chloride, such as MEK. (Which can be nasty stuff - focus on "slightly less" dangerous)
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Re: DC508 HELP with PHOTOS option 7
Hi Miguel,
Because of your posts about Option 7 I decided to finish hooking up my DC508 Option 7 to my TR502 Tracking Generator. The one thing I am missing is the wiring diagram for the TM503 Main Frame.
The interconnect wiring diagram should be on a sheet of paper contained in the Field Modification Kit 040-0789-00. I have jumpers from a different Field Modification Kit so all I need to know is which DC508 rear interconnect contacts go to which TR502 rear interconnect contacts.
Can you send me a copy of the sheet with the wiring diagram interconnections from 040-0789-00.
Dennis Tillman W7PF
toggle quoted message
Show quoted text
-----Original Message-----
From: Miguel Work
Sent: Wednesday, March 06, 2019 11:54 AM
Hi, I had bought a DC508 option 1 for my TR502 7L14. I need to install
option7, TM503 is option7, manual is very clear, but It will be very useful a
detailed photos from cables and connector. Has some body one and can post
some photos?
Thanks
Regards
Miguel -- Dennis Tillman W7PF TekScopes Moderator
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
Hi Raymond,
I have a 318, but don¡¯t recall if there¡¯s a manual in the top zippered pouch. I¡¯ll check and if so look at how feasible it would be to scan it.
Personally, I¡¯ve never looked for a manual, it was intuitive enough to just use for what I needed it for, which is simple analysis of microcontroller circuits.
Thanks,
Kyle
toggle quoted message
Show quoted text
On Mar 12, 2019, at 4:00 PM, Raymond Domp Frank <hewpatek@...> wrote:
On Tue, Mar 12, 2019 at 07:28 PM, Roy Thistle wrote:
What part isn't detailed enough?
And one more point, Roy:
The short answer is: dunno.
It's my experience that often, wading through an operator manual saves time in getting acquainted with a piece of equipment, even if I know how it works and what to use it for. Also, I like having things complete.
I am familiar with the HP 16702A and -B and Tek 1240 and TLA7XX models but somehow, I like the cuteness of the Tek 318 (and 308).
Raymond
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
On Tue, Mar 12, 2019 at 07:28 PM, Roy Thistle wrote:
What part isn't detailed enough?
And one more point, Roy: The short answer is: dunno. It's my experience that often, wading through an operator manual saves time in getting acquainted with a piece of equipment, even if I know how it works and what to use it for. Also, I like having things complete. I am familiar with the HP 16702A and -B and Tek 1240 and TLA7XX models but somehow, I like the cuteness of the Tek 318 (and 308). Raymond
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
On Tue, Mar 12, 2019 at 08:50 PM, Raymond Domp Frank wrote:
a 50 MHz (1 mega-sample) logic analyzer
Hi again Roy, 1 mega-sample? Raymond
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
On Tue, Mar 12, 2019 at 07:28 PM, Roy Thistle wrote:
My question is why: what can one do with a 50 MHz (1 mega-sample) logic
analyzer...that you can't do with a cheap p.c. based one? (Am I missing
something fun?)
Hi Roy, You're frighteningly close to touching on the very reason for groups like this to exist... Raymond
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Re: 577 Curve tracer ringing CRT and noisy step generator
Power supply measurements not bad
+12V measured +11.98DC 0.001AC ripple
-12V measured -11.73DC 0.001AC ripple
+200V measured 211.4VDC 0.386AC ripple
-30V measured -29.97DC 0.001AC ripple
+30V measured +30VDC 0.001AC ripple
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
On Tue, 12 Mar 2019 11:28:15 -0700, you wrote: Hi:
It seems the Army one has a reasonable operator's section (Chapter 4?). What part isn't detailed enough?
My question is why: what can one do with a 50 MHz (1 mega-sample) logic analyzer...that you can't do with a cheap p.c. based one? (Am I missing something fun?) Well, if you regard signature analysis as fun, then you can do that. The 308 was more limited, but if you're looking at vintage electronics that uses signature analysis, that's not a bad thing to have available. The cheap PC based ones make a lot of use of the PC processing power that wasn't available at the time. However, standalone can be good. (I do use logic analyzers, an HP16702B, for instance), but the latest project uses a 10 dollar logic analyzer box, but it's used more for I2C and serial data analysis than logic analysis. Harvey Regards.
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Re: Looking for Sony-Tektronix 318 Logic Analyser Operator's Guide
Hi:
It seems the Army one has a reasonable operator's section (Chapter 4?). What part isn't detailed enough?
My question is why: what can one do with a 50 MHz (1 mega-sample) logic analyzer...that you can't do with a cheap p.c. based one? (Am I missing something fun?)
Regards.
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John Williams
Raymond Domp Frank
Jean-Paul