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Rigol DSA 815

Discussion in 'Electronic Basics' started by Charles, Feb 21, 2013.

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  1. Charles

    Charles Guest

    This is a moderately priced spectrum analyzer covering 9 kHz to 1.5 Ghz with
    a tracking generator option.

    If you do RF, check it out.

    No affiliation with Rigol. None. Nada.
     
  2. josephkk

    josephkk Guest

    It seems right nice for the price point. But for my use case Jan P.'s
    design is a better deal.

    ?-)
     
  3. Jamie

    Jamie Guest

    I still think that 1.5Ghz is marginal with today's gear. Either a
    block converter or one that can do at least 5Ghz would be more appropriate.

    It would be nice to be able to at least look at the common 2.5Ghz band.

    I have looked at that unit and while it has some nice standard
    features and a good paint job, I think I would rather throw in some more
    money to get one that does at least twice the BW.

    Just my opinion from the peanut gallery....

    Jamie
     
  4. tuinkabouter

    tuinkabouter Guest

    Why do you even think about buying from a spammer?
     
  5. Charles

    Charles Guest

    "Jamie" wrote in message
    I still think that 1.5Ghz is marginal with today's gear. Either a
    block converter or one that can do at least 5Ghz would be more appropriate.

    It would be nice to be able to at least look at the common 2.5Ghz band.

    I have looked at that unit and while it has some nice standard
    features and a good paint job, I think I would rather throw in some more
    money to get one that does at least twice the BW.

    Just my opinion from the peanut gallery....

    Agreed. It costs more to go faster (sample higher):
    http://www.rigolna.com/products/spectrum-analyzers/dsa1000a/dsa1030a-tg3/

    The 815 does a lot although limited in frequency, but is nevertheless a very
    good buy. A frequency down converter would be nice. Any ideas?

    I am impressed with its performance/cost ratio.
     
  6. josephkk

    josephkk Guest

    So which one are you calling a spammer?

    ?-)
     
  7. tuinkabouter

    tuinkabouter Guest

    The OP.
     
  8. Charles

    Charles Guest

    "Charles" wrote in message
    This is a moderately priced spectrum analyzer covering 9 kHz to 1.5 Ghz with
    a tracking generator option.

    If you do RF, check it out.

    No affiliation with Rigol. None. Nada.

    http://www.tmworld.com/electronics-...duct-review--Rigol-DSA815TG-spectrum-analyzer

    It is worth looking at. I have been using it a lot and find that (so far)
    it meets its specs. Also, you can "print" to a flash drive and then easily
    transfer the image (the display screen) to your computer. Nice!
     
  9. JW

    JW Guest

    No thanks. For a little more money ($3K) I could get an Agilent 8562A good
    to 22GHz.
     
  10. Leif Neland

    Leif Neland Guest

    JW har bragt dette til verden:
    So $3K is just a little more money than $1,295 ?

    Nice to know your reference...

    Leif
     
  11. JW

    JW Guest

    In addition to what Michael said; When and if something goes wrong with
    the HP, I have the complete set of service manuals with component level
    information - I can fix it myself. Parts are plentiful for the HP as well.
    What about the Rigol?
     
  12. Nico Coesel

    Nico Coesel Guest

    By the time your Rigol breaks down, Ebay will be swamped with 'for
    parts' units.
     
  13. JW

    JW Guest

    Probably. I wouldn't be surprised if it consists of 1 or 2 circuit boards
    loaded with all sorts of chips that cannot be removed economically (BGA,
    etc.) by your average tech. And with no service data, you likely wouldn't
    be able to figure out what needed replacing anyway.
     
  14. Nico Coesel

    Nico Coesel Guest

    It seems you have very little experience with repairing equipment.
    What breaks most often is the PSU, inputs or outputs. These are mostly
    built around standard chips and easy to repair (especially true for
    modern low and mid range equipment). If the logic gets defective it is
    usually caused by the power supply going wrong. And then there are the
    occasional bad solder joints but those are rare. All in all most
    equipment can be serviced even without a service manual as long as you
    think logically.
     
  15. Fred Abse

    Fred Abse Guest

    It's not so much the first converter, as the first LO, that would add to
    the cost. Continuously, linearly, sweeping over a 5GHz range is not
    exactly cheap.
     
  16. Nico Coesel

    Nico Coesel Guest

    Nowadays you don't need to sweep linear. As long as the frequency is
    known the CPU knows where to put the dot on the display.
     
  17. JW

    JW Guest

    You'd be wrong in your assumption. I've probably repaired more test
    equipment in my life than you've ever even seen. I worked for 3 years for
    a fairly large used test equipment company ( www.techrecovery.com ) as
    their only component level tech. When I realized I could make a whole lot
    more money buying broken equipment, doing the repairs, and reselling on
    Ebay, I left them.

    ObShameless Plug:
    http://www.ebay.com/sch/techman7734/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p3686

    Although my stock is a bit low at the moment as in Jan and Feb I sold over
    $25K worth of equipment, if anyone sees anything they like, I'd knock 10%
    off on a private sale. ;)

    At this point there are several used equipment dealers who send their
    stuff to *me* for repair.
    Of course.
    Sometimes that is true, but many times not. I've seen just about
    everything under the sun go wrong or bad. Likely because I've repaired
    thousands of instruments.
     
  18. Neat! Say the four channel Aglient 'scope 54831B for only ~$600 looks
    like a steal. Is this 600MHz? Is there something wrong with it? (I
    wonder if my wife will let me buy another 'scope?)

    Re the Rigol: I think Dave did a tear down of it on his eevblog.

    George H.
     
  19. Nico Coesel

    Nico Coesel Guest

    And you never seen a teardown of a Rigol scope :)
    It seems the used equipment market is so much better at your end. I
    recently restored a TDS544A but its hardly worth the effort from a
    financial perspective. And I was extremely lucky someone offered a
    working color CRT board for an absolute bargain. Perhaps it was the
    shortest buy-it-now offering on Ebay ever :)
    I've done some repair work in the past but mostly the cases other
    people couldn't fix. Nowadays I only fix equipment for my own use. Or
    just convert the CRT or STN screens to TFT screens.
     
  20. Nico Coesel

    Nico Coesel Guest

    That one caught my eye as well but if you read carefully the $600 will
    get it 'upgraded' to Windows XP.
     
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