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Free: collapsible viewing hood and dust cover for 453/4, Tekcamera C12 adapter
keithostertag
I have these items for free for any longtime Tekscope member (you pay shipping):
Part# 016-0083-00 Collapsible viewing hood for Types 453 and 454. One place I see it is on page 443 of the 1970 Tek catalog. Part# 016-0074-01 Instrument cover for Types 453, 454, 491, also in 1970 catalog page 439. Part #016-0226-01 Tekcamera adapter for C12, but I don't know for which scope. All the above in decent condition, but dirty. No tears or other obvious problems. Please don't respond to list- email me. Cheers, Keith Ostertag |
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Re: Replacement to DS1230AB Lithium backed NVRAM
Rob
¿ªÔÆÌåÓý>>>>¡°I cannot understand guys, WHY BOTHER?¡±<<<< ? The key to this one is to understand that¡¡by claiming to save a couple of bucks we can easily justify the repair taking 3 to 5 times as long to implement than is should¡.. thus turning a 1 (maybe 2) beer repair (time wise) into a full six pack minimum. With the added possibility of another 6pack in consultation with an ¡°expert¡± ? Hopefully helpful Rob ? From: TekScopes@... [mailto:TekScopes@...] On Behalf Of Sergey Kubushyn
Sent: Sunday, March 17, 2013 5:56 PM To: TekScopes@... Subject: Re: [TekScopes] Re: Replacement to DS1230AB Lithium backed NVRAM ? ? On Sun, 17 Mar 2013, Gala Dragos wrote: |
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Re: Replacement to DS1230AB Lithium backed NVRAM
On Sun, 17 Mar 2013, Gala Dragos wrote:
I can not understand guys, WHY BOTHER? You can get DS1230 from Mouser for something like $15 (I purchased one a week ago to replace DS1225Y in my 2467B scope.) You will get a real thing that you can just swap in and forget for the next 10 years. And you can transfer the original chip content to the new one easily so you won't have to recalibrate. What are you trying to save here? A buck? Whopping two bucks? Is it worth a trouble and all that work involved? You could add extra logic and a counter to switch between fram chips and increase the mtbf time, or even better make your own NVRAM.--- * * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * * |
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Re: Tektronix 221 Portable Oscilloscope AS IS $59.99
Who got that?
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Anyway, thanks. I do not need another project. I do not need another project ... On Sun, Mar 17, 2013 at 10:28:11PM -0000, jayw_comark wrote:
Ebay 121082875612 --
Paul Amaranth, GCIH | Rochester MI, USA Aurora Group, Inc. | Security, Systems & Software paul@... | Unix & Windows |
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Re: Replacement to DS1230AB Lithium backed NVRAM
The solution I used for my 2440 which I have discussed here a couple
of times was to use the SRAM and EEPROM based NVRAMs from Cypress which as far as I have been able to tell in this case, can be used as direct replacements for the Dallas/Maxim SRAM based NVRAMs. They are not really any less expensive though than new Dallas/Maxim NVRAMs. They only save the SRAM contents to the EEPROM when power is removed or if specifically asked which is not going to happen without a firmware change so continuous writes are not a problem. I also considered reverting my 2440 to the earlier design where an external lithium cell was used. On Sun, 17 Mar 2013 15:21:13 -0700 (PDT), Gala Dragos <gala_dragos@...> wrote: You could add extra logic and a counter to switch between fram chips and increase the mtbf time, or even better make your own NVRAM. |
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Re: Replacement to DS1230AB Lithium backed NVRAM
--- On Sun, 3/17/13, bravovb wrote:
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Re: Does the the PSU of the R7103 without a CRT?
g_kupka
I checked all these Z diodes. They are all ok.
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Gerhard --- In TekScopes@..., "Craig Sawyers" <c.sawyers@...> wrote:
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Re: Sony/Tektronix 318 - UPDATE
--- On Sun, 3/17/13, Chuck Harris wrote:
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Re: How to upgrade a 7854 to opt 2D
Dave Casey
¿ªÔÆÌåÓýNo adjustment necessary. The firmware will know the
difference. You can also buy more RAM chips and solder them on to your board and
it will recognize the extra memory (did that to mine).
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Dave Casey
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Re: How to upgrade a 7854 to opt 2D
g_kupka
Dave,
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Thank you, is an ajustment necessary after swapping the RAM board? Gerhard --- In TekScopes@..., "David C. Partridge" <david.partridge@...> wrote:
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Re: Sony/Tektronix 318 manual with full schematic
There is a complete service manual here:
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They sells original (not scanned) manuals, in a very clean state, sometimes new, sealed in cellophane. I have already purchased from them some manuals, including a very--hard-to-find copy for my logic analyzer? Biomation 920-D, besides manuals for Tek 3T77, 3S1, all originals. I'm a very satisfied customer of their. I think that, at some levels, it worth the price, especially if the instrument is intended to be used intensively, and not for collection purposes only. Max --- In TekScopes@..., Gala Dragos wrote: > > Anybody has a scanned copy of the Sony/Tektronix 318 logic analyzer with full schematic? > The army manual that floats around the web is missing some pages. > Thanks. > |
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Re: How to upgrade a 7854 to opt 2D
Yes
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Dave -----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of g_kupka Sent: 17 March 2013 10:22 To: TekScopes@... Subject: [TekScopes] How to upgrade a 7854 to opt 2D I have two 7854. 1st one opt 2D(extended memory): I can store a signal, but it doesn't show the stored signal in the store mode, it shows only a horizontal line. 2nd one opt 78(P11 CRT): It works well. Can I upgrade this mainframe to opt 2D by swapping the memory board from the 1st one to the 2nd one? Gerhard ------------------------------------ Yahoo! Groups Links |
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How to upgrade a 7854 to opt 2D
g_kupka
I have two 7854.
1st one opt 2D(extended memory): I can store a signal, but it doesn't show the stored signal in the store mode, it shows only a horizontal line. 2nd one opt 78(P11 CRT): It works well. Can I upgrade this mainframe to opt 2D by swapping the memory board from the 1st one to the 2nd one? Gerhard |
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Re: Replacement to DS1230AB Lithium backed NVRAM
Mr. Silva,
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Its been a while. How is the 2465B going with FRAM ? --- In TekScopes@..., "Victor Silva" <daejon1@...> wrote:
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Farnel connectors
jonathanrwbrooks
Hi,
I know that this is a off subject but I have a farnel FG1 (function generator) generator with an issue and would like to produce an extender card. Some help identifying the connector would be appreciated. It is a 12 pin in line connector and the pitch is approximately 1.5mm, the pins are approximately 0.5 mm square. The pins are pcb mount as is the socket. Do not know how to post pictures but can. thanks Jonathan. |
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Re: Sony/Tektronix 318 - UPDATE
--- On Fri, 3/15/13, Gala Dragos wrote:
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Re: AWG 2020 - "illegal configuration" , "check hardware"
ravimoghe
Hi,
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Here is a repair detailed out for a different problem on AWG2020. But the cure was that the leaking Electrolites had to be replaced and, also the trcks on the boards needed to be rebuild. The person who repaired hi AWG2020 has a service manual (as mentioned in the webpage). You may like to contact him. May help you in dignosing your problem. With Warm Regards, Ravi --- In TekScopes@..., "bukek1955@..." <bukek1955@...> wrote:
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AWG 2020 - "illegal configuration" , "check hardware"
Can't find anything on what to look at for this error. I did measure the 3.0V lithium battery on the backplane and it is dead, and many of the 22uf 35v solid electrolytics are leaking.
I bought this on ebay for $650 supposedly working with the option to return, but the seller is willing to cover some repair cost. Would it be worth fixing if i can get it for $325? Not knowing what this error means could possibly make this a $650 boat anchor. |