Differences between the Tek 22xx and the 24xx series analog scopes? - Page 1
Forum section: electronics / testgear

author: george graves
author_rank: Super Contributor
timestamp: November 03, 2013, 08:53:01 am
content: It's a bit hard to find info on these "pre-internet" scopes.I've found this:https://www.eevblog.com/forum/beginners/oscilloscopes-to-stay-away-from-%28spec-tek-2337-question%29/And this:http://www.ebay.com/gds/A-Guide-to-Buying-a-Tektronix-Portable-Oscilloscope-/10000000002988624/g.htmlBoth helpful in understanding the crazy model numbers. But doesn't really say anything about the difference in the two generations.So in a nut shell, I'm looking for a +100Mhz 4 channel scope, with simple measurements to supplement my Rigol 1052E. I sometimes finding that I need a 3rd or 4th channel when working with dual opamps and such. (i'm still very much learning analog - almost forcing myself to learn more - it's my weak spot)So my questions are:- what's the difference in the two series?- are they all based on the same technology? Was it just a marketing term? Or is there something so much better about the 24xx series it's worth extra $$$- Some other question, that I don't even know to ask!Thanks in advance!

author: Bryan
author_rank: Frequent Contributor
timestamp: November 03, 2013, 10:16:50 am
content: For general information, but will get you started.http://en.wikipedia.org/wiki/Tektronix_analog_oscilloscopes#Tektronix_2400_series

author: nanofrog
author_rank: Super Contributor
timestamp: November 03, 2013, 05:52:46 pm
content: The following is from wiki (here)...QuoteHope this helps.

author: ElectroIrradiator
author_rank: Frequent Contributor
timestamp: November 03, 2013, 06:21:39 pm
content: 2245/2246/2247 arequadchannel 100 MHz analog scopes with a digital engine running it all, capable of on-screen display like the 2445 and 2465 families. These have an industry standard format 12V DC fan, which can be replaced (though it is a bother to do so).2225 and 2235 are completely analog, no digital engine nor on-screen display. 2225 is 50MHz, 2235 is 100 MHz, both dual channel. No fan, though they tend to overheat in the PSU as a result.2445 and the variations of the 2465 are all very similar (except for the CRT on the 2467B), and share many parts. Custom format fan, which may be hard to replace if faulty/noisy.None of the three families (2225+2235, 2245-7 and 2445+2465) share much in the way of special components and analog circuitry, even though they are of course very similar in overall design. For instance the Achilles heel of the 2445/2465, the U800 vertical deflection amplifier hybrid, cannot be pilfered from a 2245, as they are not the same chip. Similarly the components used in the vertical preamp circuits are more different than they are alike between the different families.

author: sync
author_rank: Frequent Contributor
timestamp: November 03, 2013, 08:20:36 pm
content: Quote from: george graves on November 03, 2013, 08:53:01 amPlease note that the 3rd and 4th channel only have two V/DIV settings, e.g. 0.1V/DIV and 0.5V/DIV.

author: PaulAm
author_rank: Frequent Contributor
timestamp: November 03, 2013, 09:21:13 pm
content: And the 2430/2432/2440 are 2 channel DSO scopes with increasing bandwidth. They might seem a little limited in comparison to what is available today, particularly the sample memory, but they're still decent scopes.

author: nctnico
author_rank: Super Contributor
timestamp: November 03, 2013, 09:26:53 pm
content: IMHO the 2230 is the gem in these series of scopes. It has 4k record length where the 2400 series DSOs only have 1k record length. Actually Tektronix' low end series all have a very small record length (2.5k) even today.

author: markce
author_rank: Regular Contributor
timestamp: November 03, 2013, 09:43:48 pm
content: 2236 does have a fan, and it can be replaced (quite easily). It has a digital circuit board which implements counter/timer and dvm, measurements are displayed on small vfd.