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Sorry all, I should have searched first, and asked later.... By now I found several member messages about replacing them by lower number chips with good results, like a -02 replaced by a -01, like

Hi all, My 2465B was working perfect yesterday, but today at Power-On it gave a "Test 05 Fail 24" error. I followed the troubleshooting flowchart that led me to checking the signal at pin 28 of the

I read that a double balanced mixer like this one suppresses the fundamental frequencies of the LO and AF frequencies and only leave the difference or additive frequencies to output. Now it makes

I have an old A1 board with part number 671-0722-02, with a date of 1987 (design or manufactured?). I believe this part number is for a 2465B oscilloscope. Also, I can obtain a non-working 2445B for a

Tektronix wrote a series of 10 app notes pertaining to photometric measurements. The App Notes are as follows: 60-W-5750 58-A-2635 58-A-2702-1 58-A-2704-1 58-AX-2764-1 58-A-2912 58-A-2926-1

To: [email protected] Sent: Friday, March 2, 2018 10:29 AM Subject: Re: Analog computing, X-Y display, was Re: [TekScopes] Wanted: Tek 503 Toby, Also checking out Rolynn's suggestion of a 602 or 604

I decided to chase down the missing LO signal coming into the mixer. The oscillator signal is correct all the way through to U1040 output 9 at 10MHz. The output pin 12 of U1042A JK Flip Flop is divded

Thank You!! After persevering with Google Search I have found a few designs of varying complexity that could suit me, good old WW - now the fun begins. Regards, Dave

Dave, if you want to roll your own get a copy of 'Electronics and Wireless World" DEC 2001 from yr local library. Page 922 has article 'Differential-in 100Mhz scope probe" by Cyril Bateman. PC boards

Hello-- I'm offering FS one each manual for a Tek 515/515A oscilloscope (no serial no.). The manual is in VG condition (front cover missing a section near its model-number window) and is unannotated.

Or find a Tektronix 536 oscilloscope and put identical plug-ins in the vertical and horizontal channels. Get a T plug-in with it so you have a time base if needed. Byron WA6ATN

Let's see. I've heard tales of things wrapped in a layer of bubble wrap, and then thrown off a UPS truck to land on the faceplate. By so much, you're lucky. Then you've got spare parts at worst.

Hello all, First, thanks for all of you who gave me your inputs... In fact think I was just seeking validation for the nonsense purchase which I was already decided to do in my mind. And I did... The

I'm looking get get set up to be able to calibrate my own scopes. In reading the 485 manual a high frequency constant amplitude signal generator 100-350mhz is needed. If in the future I pick up a

I've found X-Y mode on a digital scope (TDS460A at least) to be extremely unsatisfying. It seems to be far from the sweet spot of what DSO's can do.

On Fri, 02 Mar 2018 18:39:11 +0000, you wrote: 3D printing can be a bit picky about settings. The smaller the layer setting the denser the part, and the more rugged it will be. Extruder temperature

I'd recommend just using almost any analog scope that has X-Y capability for display. For low frequencies including audio, the response of the V and H should be virtually identical - you can easily

Thanks for the extra info. I certainly wish I could peer over your shoulder, I'd probably learn a lot. A very cheap X-Y option right now is a 1720 vectorscope, if that has the bandwidth you need; it's

wrote: There are now services that'll demand-print and ship items, like e.g. ShapeWays, which will print in a variety of materials. It'd be nice to have a stash of 3D models for Tek replacement parts

Toby, Documentation is just a notebook, a few pics before disassembling anything important. Analog computers are two Comdyna GP-6. FWIW, the system could modeled in MatLab, Mathematica, or even