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Favorite Tektronix Scope

Discussion in 'Electronic Repair' started by Too_Many_Tools, Jan 1, 2006.

  1. I need to replace an oscilloscope that has gone to the Great Test Bench
    in the sky.

    What Tektronix scope do you prefer?

    I have always like the 7000 series...would you recommend these or
    another series?


  2. Steven Swift

    Steven Swift Guest

    I use the new Tek DPO scopes for most work, but keep 7904 (500MHz) with
    high speed plug-ins and samplers for the times I need analog.

    You can get 7k scopes for almost nothing. The DPOs will cost a bunch.

  3. Scott Dorsey

    Scott Dorsey Guest

    The 7000 series is hard to beat. It's stable, it's not that hard to
    work on, and there are plenty of useful plug-ins available at reasonable

    That said, I still have a 545 on my bench at work. The calibration contract
    just went over to a new company and the new cal guys aren't really sure what
    to make of it....
  4. Pooh Bear

    Pooh Bear Guest

    Goodness. I had to get rid of a couple of 545s years ago ( no room to keep them

    My current scope at home is a 465. Basic but nice.

  5. I am very happy wuth my 2445A. I still have the 475, which is like a
    Kalashnikov of oscilloscopes -- very simple and sturdy and has high
    voltage ability. I will sell the 475 though, two scopes is too much.


  6. I like the TEK2465, Personally I don't think that it can be beat for
    an analog scope.
  7. Bill Turner

    Bill Turner Guest



    Depends on what you want to use it for.

    If you want an older, inexpensive, general purpose 100 Mhz scope, I
    think the 465B (not the 465) was the best Tek ever made. They sold for
    about $2500 back in the '70s and were worth every penny.

    Ok, I'm a bit prejudiced because I worked on the production line for
    both models for three years, testing and calibrating. In that time I
    did about 2000 of them.

    They have been out of production for more than 20 years now, but a
    good one can still be had. Shop around. Tek built them to last.

    73, Bill W6WRT

    p.s. Actual quote from a Tektronix customer: "I gave my purchasing
    people instructions that they can buy any kind of scope they want, as
    long as they are blue and come from Beaverton, Oregon."
  8. Dino Papas

    Dino Papas Guest

    I finally sold off my great Tek 475 and picked up a Tek 2440 -- nice to
    be able to "save" the display and then be able to make measurements on
    the signal at your leisure. Especially nice when looking at the slew
    rate of the slower op-amps.

    Dino KL0S/4
  9. Ken Scharf

    Ken Scharf Guest

    Do you prefer Analog or Digital? Do you have room for an old tube
    mainframe scope, or prefer a "portable"?

    I have a Tek 454 that I got at a company auction years back where
    I used to work (paid $150 for it). The 453,453A,454, 454A series
    are easy to work on, and parts are available from many sources
    (the nuvistor tubes in the front end and the tunnel diodes in
    the sweep circuits can be a bit hard to find, but are available).
    The 485 is a look a like that is all solid state with higher BW
    but many do not consider it as good a scope design. I would not
    turn one away if it were cheap enough though, when working they
    do a good job.

    The 453,454,485 scopes have a good CRT that will give years of
    service. I've been told that the 465-475 series (larger tube)
    will suffer from CRT burn-out eventually, the 453-454-485 scopes
    rarely need a new crt. (The company where I got the scope from
    had bought spare parts to keep all their scopes going, they NEVER
    replaced a 453-454 crt but used up all their 465-475 crt spares).
  10. Tek 475.
    I have fancier scopes that do fancy stuff, but the 475 is an all-time
    *classic* par excellence. I love it so much I also use it as a
    decorative centrepiece for the dining room table.
  11. john jardine

    john jardine Guest

    Until last month I'd treasured my Tek 7633. Cost the eqiv' of only $60, yet
    gave 5 years continuous, unremitting, troublefree service. Lovely bit of
    kit. Looked right, felt right and offered a vast, soul pleasing array of
    buttons and knobs.
    Switched on with the fan purring away, I knew that I was at one with the
    Sadly, the display character generator started to fail. Even bought a
    service manual and had a poke about. Joy was not to be, a Tek chip was
    giving up the ghost. I knew then it's life was drawing to an honourable
    close and another Tek scope would have to be sought.
    I'd previously fancied the more modern Tek 2445, so downloaded a service
    Shock-horror!, perusal of the circuitry revealed that there is nothing in
    them other than a few special Tek chips.
    Ended up buying a 100MHz Hitachi scope (equiv of $160). It does much more
    than my old Tek, having benefit of modern uP aided cursors and measurements
    etc. It's also smaller, lighter and repairable.
    I love using it but I can't help feeling there's something missing that's
    really crucial. Something that raises an instrument from the status of
    'nice' to that of 'beloved'. (probably the Tek fan :).
    Obviously I need to get out more.
  12. Guest

    I've got a 2445, which I've had for about six years. It was the first
    equipment purchase made when I started a new job; it was purchased
    reconditioned from Tucker. I inherited the scope when that employer
    went bankrupt. I enjoy it very much, but need storage... I have a
    TDS210 (same provenance) which is pretty good, but I lust after the HP
    scope I have at work, which has two analog channels and 16 digital
    channels, and LOADS of memory... *sigh*. So many projects, so little
    time and money :)
  13. John-Del

    John-Del Guest

    I have used a 7603 for about 15 years for general troubleshooting, and
    it's my favorite scope. It's rock solid, and bright and sharp. I
    haven't been able to find a horiz plug-in with TV sync, but the trigger
    is so good I can get it to lock on video anyway. Only problems are the
    huge Mallory capacitors in the power supply that will open without
    warning. Replace all of these and you'll have no trouble at all.

  14. James Sweet

    James Sweet Guest

    I love my 465B, depends on what you need in a scope though.
  15. Rube

    Rube Guest

  16. John  Larkin

    John Larkin Guest

    7104 is an even nicer analog scope, with its phenomenal writing rate.

    A used 11801 or 11802 and a sampling head will get you a 12 or 20 GHz
    dual-trace digital scope for under $2K, a *much* nicer sampling system
    than the 7000-series stuff.

    My everyday scope is a TDS2012, which is great for most things. You
    can take beautiful photos of the color screen for engr notes, manuals,
    or test procedures.

    Great plugin: 7A22 (or 1A7A, for the 547) which has switchable
    bandwidth and differential input down to 10 uV/cm.

  17. Mike Andrews

    Mike Andrews Guest

    Tek 465M (465B plus digital meter stuff) is my favorite of the ones
    in the shop. Next fave is a non-Tek: Phillips PM3055.
  18. My favorite for LF analog work (<200MHz) is the is the Tek TAS485 They
    stopped making this, along with all their analog scopes, which is a cryin'
    shame, since digital really isn't good for everything.

  19. Yup. Does everything most need from a scope. But in the UK, they still
    fetch decent money.
  20. Thanks for the replies so far...they are appreciated.

    One feature of the 7000 series that I have appreciated is the plugin

    Spectrum analyzer, semiconductor tester, differential amps, etc. all
    add to its flexibility.

    Does anyone have a history of the 7000 series?

    Another issue I have seen with the older scopes is at least one can
    usually repair them....with parts from another parts scope. The newer
    scopes are reaching the point of throw away status with no parts
    available and if by chance they are, the price prevents a reasonable

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