Tek 2465B, how to tell what options are in them?

The manual is here.

Here's the datasheet which describes some of the options:

--
Jeff Liebermann     jeffl@cruzio.com 
150 Felker St #D    http://www.LearnByDestroying.com 
Santa Cruz CA 95060 http://802.11junk.com 
Skype: JeffLiebermann     AE6KS    831-336-2558

ok, it seems I only have the B 400Mhz model 4 channel but its in good shape like most of them I saw today..

I did notice one thing however, some of the knobs are ecentric when turned. I don't know if that is normal or signs of bad shafts? They seem to work just fine though..

Thanks.

And the source is .... ?

--
 Thanks, 
    - Win

You have a B version datasheet?

--
 Thanks, 
    - Win

If I told you my sources it wouldn't be fun now would it ;)

If you would like one I maybe seeing the guy sunday morning before he E-Bays them.

Jamie

The Tek 2465 is a major pos. I bought a bunch of them. Soon, the vertical position became erratic. Turns out the contact resistance of the motherboard to the chassis was a major part of the position value.

All the scopes I bought developed this problem. I do not know if it was corected in later versions, but I ended up scrapping all the ones I bought.

Beware this scope. You may buy it cheap, and find it unusable.

Since you knew what the problem was, couldn't you fix it?

--
 Thanks, 
    - Win

This looks nice:

Not very good scans, but might be usable:

"Tektronix 2465B oscilloscope teardown"

--
Jeff Liebermann     jeffl@cruzio.com 
150 Felker St #D    http://www.LearnByDestroying.com 
Santa Cruz CA 95060 http://802.11junk.com 
Skype: JeffLiebermann     AE6KS    831-336-2558

I used one that seemed to work right at a job. I found the triggering to be not up to snuff. The thing seemed to blank when it caught a edge until it could sync. I don't need that.

I needed something that would sync up fast because I was troubleshooting TV s that pretty much shut down right away if there is anything wrong.

That one was a 2465 CE I think and I am not sure what options that means. I t did have OSD for voltage and whatever but that stopped working in short o rder. However the time and voltage scales did still show up. But before tha t it would give you a DC reading and whatever on the waveform. Later, an ar cing flyback took the voltage through my body to the scope which wass nbot on a properly grounded outlet and it blew the SMPS in it. I started trying to fix it but time did not allow so I grabbed an old Hameg off a high shelf , fell down doing it and burned myself on the space heater. And really, tha t POS Hameg told me what I needed to know.

Bottom line is I don't need all that fancy shit. If I do anything now it is audio and the old 20 MHz Tenma handles it just fine.

But good luck with it. As far as I know it does not have tunnel diode trigg ering which I think was a Tek exclusive, at least for a time. The rotary co ntrols are just encoders and flip the circuit to different parameters, they are not actual switches like in the old days. But then try to clean some o f those old SOBs and watch the fingers fall off wrecking the scope, or the plugin. I had that problem with 7000 series plugins. My recommendation on t hose is to never take them apart, just flood them and maybe use an ultrason ic cleaner.

The 2465s have a whole bunch of relays, you should be able to hear them cli ck when you change ranges. Those might eventually need to be cleaned and I am of no help on that.

I don't really like the 2465, but it still is a decent scope. I just don't consider it top notch. It falls short of what I would consider a Tektronix.

I bought a 2465B new when I was at IBM, and used it for 15 years with no problems. It had really good triggering.

I now have a 2467, which also works fine. It's at least as good as my 475A, and three times as fast. The microchannel plate CRT is cool.

Over the years I've owned or had in my lab (with some suffixes missing)

7904 (probably A) 7104 475A 485 466 468 11401 11801A 11801C 11802 TDS 520 TDS 644 TDS 684A TDS 694C TDS 744A TDS 784A

Plus a couple of the little 500-series plug-in ones. My faves are the 11801C/11802 and the TDS 694C, though neither is really a general-purpose scope. (The 694C with FET probes is good for most things.) The only one I ever had problems with was the 466, which was 25 years old when I bought it. It worked fine till I turned on storage mode, at which point the trace disappeared and never came back.

Cheers

Phil Hobbs

Probably, if we had time. We were too busy trying to meet shipments, and the 7904's and 7104's had arrived so we really didn't need the 2465's any more. Also, a bunch of HP equipment had arrived - spectrum analyzer, network analyzer, probes, counters, and it was much more important to check them out. And a lot more fun.

We were early adopters. Never buy newly released or low serial number equipment. Let others do the field test.

How cheap, pre-eBay? I see some there for $75, with just one problem...

Does everyone know the "FPP FAIL" selftest trick for finding cheap Tek scopes on eBay?

FPP test fail means NVRAM contents gone. Just replace the backup battery. It's buried in plastic, chop the top of the RAM chip apart to get access.

But how do you get the data back?

This was a few years ago, so IIRC after soldering in a coin-cell you have to run the self-cal, invoked from the maint-selftest menus described in svc manual. The typical failure was FPP batt status, also CKSUM lost nvram.

I used a 2465B for several years at Microdyne, with no problems.

There was an option for NTSC TV work. I think it was -05.

--
Never piss off an Engineer! 

They don't get mad. 

They don't get even. 

They go for over unity! ;-)