Re: Oscilloscope dealers in the US

John Larkin wrote:

On Fri, 13 Jul 2007 00:54:12 GMT, Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:


John Larkin wrote:


On Thu, 12 Jul 2007 18:00:20 -0500, Ben Jackson <ben@xxxxxxx> wrote:



On 2007-07-12, Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:


So far I found:

Agilent DSO3202, pretty nice features but only 4k memory.
Tektronix TDS2022, only a paltry 2.5K memory.

Tek has some comparisons of the TDS2000 series to the DSO3000 series at:
http://www.tek.com/products/oscilloscopes/industry_comp.html

Obviously favors Tek, but they do some live demos with the DSO3000's that
are pretty damning. For example, you often don't get the 4k points.

The 2.5k memory is probably the weakest link of the TDS2000 series.
Also beware of older Tek scopes (that you might buy used) with larger
buffers. Some of them are very slow to refresh if you select the deeper
memories (becasue they capture full buffers before displaying).



My favorite from a feature point of view is the Hameg HM2008.

Looks nice. Make sure the MB deep buffer works in all modes/speeds you
care about. The optional 4-channel logic analyzer looks neat, too.
The Agilent 54645D and friends have several logic channels plus two scope
channels, but the specs on the scope are crappy (200Msps, if I remember).



weight really wouldn't work, it's basically a full size big scope.

The TDS2000 series is downright tiny. I've sure moved it a lot more than
my old analog scope!


You can pick up a TDS2012 with the pinkie finger of your left hand. I
just verified that. Try that with a 7000-series box!


Still got a 7704 cranking here. Works like new, glows in the dark :-)

Does that TDS2012 work ok for you guys? Doesn't spew 80kHz from the backlight inverter around like the TDS220?


I love mine; it's my "personal" scope (along with a 20 GHz 11801!) and
it does 98% of what I need done. I haven't noticed any excess noise,
although I can get some pretty good LCD kickout stuff if I hold a
probe about 1" from the screen. It looks like fairly slow LCD scan
stuff, about 450 Hz. There's some 40 KHz backlight sinewave leakage,
mostly out the sides and back, but I've never seen it get into a
measurement.


Maybe they backed off with the inverter frequency. The TDS220 was really bad with 80kHz, to the point where I quit using it for any analog stuff.


It doesn't have much memory, pretty much just what you see on the
screen. Analog scopes didn't have much memory, either.


Actually I found it adequate even though I did ultrasound echo measurements with it where you have a wee echo in the tens of nsec that occurs tens of usec after the pulse, somewhere.

The downside with the early non-B versions seems to be a lack of connectivity where you can't get the pics off the scope other than doing a crude snapshot with a digital camera. Some larger models have disk drives, but not all.


It uses a persistance algorithm that I independently invented: a trace
sets pixels on, and an independent background process turns random
pixels off at an adjustable rate.


This can be very powerful especially if the decay speed in the background process is adjustable. On the DPO scopes it isn't so hot IMHO, used one at a client last week, didn't like it. I urged them to buy a 2465 off EBay and I really hope they do that.

--
Regards, Joerg

http://www.analogconsultants.com
.

Relevant Pages

  • Re: Oscilloscope dealers in the US
    ... Agilent DSO3202, pretty nice features but only 4k memory. ... Obviously favors Tek, but they do some live demos with the DSO3000's that ... The Agilent 54645D and friends have several logic channels plus two scope ...
    (sci.electronics.design)
  • Anybody try the new Agilent 3000X yet?
    ... My least favorite scope is the Tek MSO4000. ... You get conditioned by the Agilent scopes to expect ... 10kpts sample memory and can do about 3600 waveforms/s. ...
    (sci.electronics.design)
  • Re: Anybody try the new Agilent 3000X yet?
    ... My least favorite scope is the Tek MSO4000. ... You get conditioned by the Agilent scopes to expect ... 10kpts sample memory and can do about 3600 waveforms/s. ...
    (sci.electronics.design)
  • Re: Oscilloscope dealers in the US
    ... Agilent DSO3202, pretty nice features but only 4k memory. ... Tek has some comparisons of the TDS2000 series to the DSO3000 series at: ... The Agilent 54645D and friends have several logic channels plus two scope ...
    (sci.electronics.design)
  • Re: Oscilloscope dealers in the US
    ... Agilent DSO3202, pretty nice features but only 4k memory. ... Tek has some comparisons of the TDS2000 series to the DSO3000 series at: ... The Agilent 54645D and friends have several logic channels plus two scope ...
    (sci.electronics.design)