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New to group - Just acquired a R7844

 

Hi All:

I just found a working R7844 with 7A26, 7A24, and two 7B85 plugins. I was in a pawn shop and saw it on a shelf in the back room. I asked the owner and he said it had been sitting there for 5 years and he did not know what it was. He brought it down and I powered it up. Nice bright traces and ran a wire to calibrator output and all channels worked.

The best news is he wanted it off his shelf and asked me for an offer. Just for laughs I offered him $40.00 and he couldn't say yes quick enough. (guess I should have offered $20.00).

I have used scopes my whole life but not one like this. Am still trying to learn how to use it as I have no users manual. Was able to use it this weekend to troubleshoot my Ham radio PLL with a 60 Mhz output that my old scope could hardly see. What a great piece of test gear!
Rob
 

You got a great deal. I am partial to 7844 for whatever reason. The R and
the none R version share the same manual. It and the manuals for the
plug-ins you got are on Bama or TEK-wiki. (just Google "Tektronix 7844 pdf"
, etc.

If you are partial as I am to printing portions of the manual. I highly
recommend getting Dave's CD's. Much higher quality and better suited for
printing 11*17 as I like to do. Good bang for the buck.

Some call the 7844 complex in operating. However, if you envision each trace
(they lay out top to bottom on the 7844 controls) as a separate oscilloscope
90% of what you will do will be extremely straight forward and intuitive.

Congratulations...
Rob

-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf
Of k4mt
Sent: Wednesday, September 19, 2012 5:06 PM
To: TekScopes@...
Subject: [TekScopes] New to group - Just acquired a R7844

Hi All:

I just found a working R7844 with 7A26, 7A24, and two 7B85 plugins. I was in
a pawn shop and saw it on a shelf in the back room. I asked the owner and he
said it had been sitting there for 5 years and he did not know what it was.
He brought it down and I powered it up. Nice bright traces and ran a wire to
calibrator output and all channels worked.

The best news is he wanted it off his shelf and asked me for an offer. Just
for laughs I offered him $40.00 and he couldn't say yes quick enough. (guess
I should have offered $20.00).

I have used scopes my whole life but not one like this. Am still trying to
learn how to use it as I have no users manual. Was able to use it this
weekend to troubleshoot my Ham radio PLL with a 60 Mhz output that my old
scope could hardly see. What a great piece of test gear!



------------------------------------

Yahoo! Groups Links
John Griessen
 

On 09/19/2012 05:06 PM, k4mt wrote:
I have used scopes my whole life but not one like this. Am still trying to learn how to use it
I like 'em. They're complicated though, since they;re two scopes in one box...
You put in two vert amps and 2 time bases and the time bases can be set to different triggering and speeds.
Literally 2 in one, and with a trace separation horiz. adjust on the displayed signal after triggering
for comparing. Very useful.

--
Ecosensory
 

"Rob" <rgwood@...> wrote:
You got a great deal.
Rob, you have a gift for understatement. Wow! That would have
been a good price for a couple of the plugins. Congrats!
-ls-
Rob
 

*laugh* well I was/am impressed..... scoring my all-time favorite... with
prudent plug-ins to boot..

As I re-read the title and my post; some of my responses may be a bit
cryptic to someone very new.

Bama is here:


Tek-wiki is here:


and Dave is here:


Again, you did a great deal.
Rob

-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf
Of larrys@...
Sent: Wednesday, September 19, 2012 8:12 PM
To: TekScopes@...
Subject: RE: [TekScopes] New to group - Just acquired a R7844

"Rob" <rgwood@...> wrote:
You got a great deal.
Rob, you have a gift for understatement. Wow! That would have been a good
price for a couple of the plugins. Congrats!
-ls-



------------------------------------

Yahoo! Groups Links
 

The funny part of the story is the pawn shop owner said he fired the employee who took the scope in for pawn when the owner did not come back to pay off the pawn and pick it up. He was convinced that he could never sell it and that was why it was not on the sales floor.

I guess its better to be lucky than good as they say! I have figured out how to use now and I love it.

--- In TekScopes@..., "k4mt" <k4mt@...> wrote:

Hi All:

I just found a working R7844 with 7A26, 7A24, and two 7B85 plugins. I was in a pawn shop and saw it on a shelf in the back room. I asked the owner and he said it had been sitting there for 5 years and he did not know what it was. He brought it down and I powered it up. Nice bright traces and ran a wire to calibrator output and all channels worked.

The best news is he wanted it off his shelf and asked me for an offer. Just for laughs I offered him $40.00 and he couldn't say yes quick enough. (guess I should have offered $20.00).

I have used scopes my whole life but not one like this. Am still trying to learn how to use it as I have no users manual. Was able to use it this weekend to troubleshoot my Ham radio PLL with a 60 Mhz output that my old scope could hardly see. What a great piece of test gear!

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