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Old 24th October 2003, 07:08 PM   #1
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Angry Are analogue oscilloscopes died out?

Hi,

Several years ago Tek and Agilent (formerly HP) stopped making real analogue oscilloscopes with substantial bandwidth (>100 MHz). The one left building them then was Fluke. I ordered then a PM3394B 200 MHz/4ch combiscope as an all round workhorse.

Today I contacted Fluke for a pair of extra probes and they told me they stopped the combiscope line, only digital scopemeters left.

Yes there are still some smaller brands around makings analogue scopes, but not with the capabilities of the big brands of those days.

Are the good analogue scopes extinct nowadays?

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Old 24th October 2003, 08:41 PM   #2
sam9 is offline sam9  United States
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Try BK Precision, Instek or Protek. Perhaps better still try E-bay.
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Old 24th October 2003, 08:44 PM   #3
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Quote:
Originally posted by sam9
Try BK Precision, Instek or Protek. Perhaps better still try E-bay.
Don't forget Hitachi. Picked up a nice little 60 MHz Hitachi V660 on eBay for $91 about a month ago.

se
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Old 24th October 2003, 08:55 PM   #4
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Default Re: Are analogue oscilloscopes died out?

Quote:
Originally posted by Pjotr
Are the good analogue scopes extinct nowadays?


I bought a Tek 100 MSp scope in the late 80's for 130 kSEK. Now you can get a 1 GSp for 10-15 kSEK. Times they are changing...

(1 USD around 7.8 SEK)
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Old 24th October 2003, 09:29 PM   #5
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Default Re: Re: Are analogue oscilloscopes died out?

Quote:
Originally posted by peranders



I bought a Tek 100 MSp scope in the late 80's for 130 kSEK. Now you can get a 1 GSp for 10-15 kSEK. Times they are changing...

(1 USD around 7.8 SEK)
I just today read that the latest record is by Tektronix, 7GHz
and 20Gsamples/s. It's yours for 30000 Euro.

However, I think Pjotr was not intersted in sampling scopes.
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Old 24th October 2003, 10:13 PM   #6
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Indeed Christer,

I just realised today that real high-end analogue scopes are not made anymore. Exempt some very specialised and expensive ones. I am quite happy with the PM3394B at work and it serves me well for DIY also. Paid 5000 EU for it as a half-year-old demo model calibrated and with full warranty. Is has a sampling mode as well but most time I am using it in analog mode It can sample at 25 GHz in repetitive sampling mode.

Btw. Christer that newest Tek, does that sample at 20 GHz in single shot mode or is it in repetitive sampling mode? If it is single shot, I am wondering where and how they store that huge amount of data.
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Old 24th October 2003, 10:27 PM   #7
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Pjotr,

I don't really know. I just read a brief announcement text about
it in some electronics newspaper I picked up for free when
shopping some components earlier today.

Now, when I check back, they say the analog bandwidth is 7GHz
and then they say the max sampling rate is 20Gs/s. I suppose
analog bandwidth just refers to what you can get by the
sampling, or could it be that it is both analog and digital? I
really haven't followed what's happening on the scope market
for many many years, so I don't know what is normal
nowadays. Anyway, the model number is TDS7704B. I suppose
you might be able to find more info on Tektronix's webpage.
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Old 25th October 2003, 01:37 PM   #8
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i bought a high end digital scope -- it has many wonderful features like FFT, ability to measure phase, do math on the fly etc., various waveform captures and analysis but I am seriously thinking of getting a used TEK 2465B, BK or Hitachi (somewhat regretfully I gave away my 7704A) -- the digital scope sometimes makes up its own mind and you have to turn around your thinking to "think like it". The display on the digital scope is good, but the display on an analog version is better.

there is such a glut of good used scopes on the market -- it's staggering.
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