Do I really need a 400meg scope?

[till]

go and get yourself one. I collect a good handfull of Tek 7000 plugins now, and to give those not sitting in my 7904 a "garage" i just ordered a 7313.. at that price could not resist http://www.rainer-foertig.de/Oszillskope.htm

[jewilson]

Last year my Tek scope broke, well I could have fixed it. Well I did not because you can buy a nice Tek scope on EBAY for only $240. Yep, I purchased a Tek 475A, it's condition is like new.

check it www.ebay.com search for Tektronix , you can't beat a Tek scope even a old one.

till,

Next time get your self a Tek 7854 with the amp that has a 10uv sensitivity.

[setmenu]

Just having a nose around at the moment.
Thus far seen a Techtronics 2465 300meg scope,reserve £260.
Seems probes manual etc are extra.
No doubt the price will go lots higher, the buyer says the unit is worth £1000+

Views?


Setmenu

[till]

till,
Next time get your self a Tek 7854 with the amp that has a 10uv sensitivity.

nothing against, this will be a nice TEK7000 collection. Unfortunately prices at ebay.de are much higher than at ebay.com I often look for interesting plugins as the 7A22,7B85, multimeter or counter, but over here they often are really expensive


In fact, what i miss most often are more probes!


At Foertig they also sell 475s, but not at that good price than yours.
http://www.rainer-foertig.de/Oszillskope-2.htm

[fmak]

[QUOTE]Originally posted by setmenu
[B]Just having a nose around at the moment.
Thus far seen a Techtronics 2465 300meg scope,reserve £260.
Seems probes manual etc are extra.
No doubt the price will go lots higher, the buyer says the unit is worth £1000+-----------------------------------------------------------

No, the price of a 2465B in excellent condition is around £700. Don't pay more. You do need 400MHz to look at digital waveforms properly. Don't buy the tek probe 6137; the HP 500MHz probe is better, with a smoother waveform. Lots of ringing on the 6137.

Best way to look is to solder lread of correct impedamce to the circuit board.

[setmenu]

Hi fmak
Even £700 is a bit steep for me at the moment, as I have no idea
how much real use the unit will get.
It would be a nice toy though
It it clear from your comment, that a good deal of bandwidth
is required to measure the signals with this digital lark..
This does seem to preclude cheap scopes!

I do not even have any idea of how to measure these circuits,
I presume I also need to obtain some sort of 'thingy' to supply
relevant signals etc..

Arrrgh.. I know so little and it could cost quite a bit of ££££ to
learn.

Any other makes of scope that you can recommend?


Hmmm, I seem to be moving off topic with the above... oops


Setmenu

[fmak]

check it www.ebay.com search for Tektronix , you can't beat a Tek scope even a old one.

----------------------------------------------------------
Unfortunately, the cost of transport plus the possibility of VAT and Imnport Duty makes it inadvisable to buy from the US.

Also most on ebay.com don't offer any form of guarantee.

[setmenu]

Hmm ,
400mhz scopes don't come cheap [did not really expect them to..]
There does not seem to be a whole lot of choice [Tektronix ] on the Uk ebay at the mo.

Surely Tektronix are not the only good make out there?


Setmenu

[fmak]

400mhz scopes don't come cheap [did not really expect them to..]
There does not seem to be a whole lot of choice [Tektronix ] on the Uk ebay at the mo.

Surely Tektronix are not the only good make out there?

----------------------------------------------------------------------

Most Japanese scopes here are 100MHz or less. 200-400MHz analog scopes are rare except teks. You can try the tek 7 series system which is older and may be cheaper, but you may have problems due to age.

[till]

I doubt you really need the 400MHz. Also in case a scope (TEK) is labeled 200MHZ, this does not mean if you apply a signal with more MHZ you see nothing, it also is displayed with some more error. And, have a look for probes, do you really want to buy a good 400MHZ probe ? at some speed the probe becomes more expensive than a good used scope. Downsize your aim to <= 200MHZ, get a 453/465/475 scope if you like it smaller, or any fast enough 7000 mainframe, a timebase, and one of the bettet Y plugins. This is affordable, and very good quality. I doubt you will reach much better with an analog scope. At university i had to work with a digital scope, and they may be faster (but then expensive and need expensive probes) but i did not like the handling and the picture they made. Keep in mind what gear was made in the 70´s and 80´s , i suspect also later, using these scopes. You develop more advanced stuff?

Tektronix may not be the only, but you get good (best?) quality for your money.