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Tektronix 2445a Questions

Hi,

I just purchased a Tek 2445A o'scope for home hobby use and have two questions.

1) How do I activate the diagnostics? I'm use to modern digital scopes at work where everything is menu driven and pretty obvious.

2) When operating any of the controls, all of the front panel LEDs flicker in unison. Is this common or indicative of a serious problem? Could it be dried out power supply caps? Other than being an annoyance, does it affect scope operation in a any way?

I'm in the process of ordering operating and service manuals.

Any info would be appreciated.

Thanks much, Joe

Reply to
joe4702
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I have service manual for Tek 2445. It is possible to send you via email if you are interested. 3 zip files (5 meg each).

"joe4702" a écrit dans le message de news: snipped-for-privacy@l41g2000cwc.googlegroups.com...

Reply to
Yves Tardif

Yves,

That would be much appreciated. You can send them to snipped-for-privacy@yahoo.com.

Thank you!

Joe

Reply to
joe4702

Sorry, it's joe4702 and sending it to either yahoo or hotmail will work. Thanks.

Reply to
joe4702

A very nice instrument.

I recommend you download a Manual for free from

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. subscription is simple and free. Just follow the instruction.

Then download a manual for a 2445A/B or 2465A/B -- all of these will have the instructions you requested.

Absolutely normal as slong as the flickering stops a few momets after you relaese any knob/pot etc.

No

No

Info for ordering or what info do you mean? If the first is the case, than : Download 'em.

hth, Andreas

Reply to
tekamn

Andreas,

Nice to find out I don't have a repair job ahead of me regarding the LED flickering.

It seemed a little strange to me, and after reading an old post where someone mentioned the flickering as being abnormal and possibly caused by a power supply problem, I was ready to start troubleshooting. I had already taken the cover off and measured the supply voltages at J119 - they were all spot on. My next step was going to be buying an ESR meter.

It's apparent from reading the newsgroup that you know what you are talking about. Thanks for taking the time to post and saving me from trying to correct a non-existant problem.

Yves was kind enough to e-mail me a 2445 service manual. TekNet doesn't have any 2445A manuals, but I'm assuming the A is 95% identical. I understand the B version is substantially different from the earlier two versions.

This scope is very pristine inside and out. I bought it from a private owner who obviously didn't use it much. I'm hoping the hybrids hold out but I paid less than $200, so I'm not in too deep.

Thanks again, Joe

Reply to
joe4702

A minor rant. This, IMO, is an excellent reason NOT to have everything 'menu driven and pretty obvious.' Such things don't help the operator to gain a better understanding of O-scope operation and how best to make measurements with it.

With that said: There exists a 'TekScopes' mailing list at Yahoo Groups. You would do well to join in the fun.

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Hope that helps. Enjoy your new toy. ;-)

--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR, 
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"
Reply to
Dr. Anton T. Squeegee

Thanks for the link. I will join. After playing with the 2445 vs. the 3000s at work, I am starting to see your point.

Reply to
joe4702

Sphere Electronics claims to be able to ship those 2440/2460-series hybrids off to Japan for repair(!) You might ask about that on the TekScopes list if you're interested.

-- jm

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Note: My E-mail address has been altered to avoid spam

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Reply to
John Miles

..snippety..

$200 is a bargain for such a beauty.

scnr, Andreas

Reply to
TekMan

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