1GHz scope

tindel

Joined Sep 16, 2012
769
So I won the lottery and won a small contract to do some power supply design using GaN transistors, and now I need a real scope.

At previous employers, I've used Tektronix scopes for this type of development, but considering the insane price of the probes (IsoVu Isolated Probes | Tektronix), and somewhat small budget of the contract, I have to consider other methods for testing (math functions, single probe testing, etc.)

Requirements:
Minimum: 1GHz, Power Analysis features, Bode Plots (and function generator), Segmented Memory, reasonable Sample Depth (doesn't need to be too big though - this spec is a little overrated IMHO with segmented memory)
Nice to haves: MDO - I2C, CAN, High Speed Parallel Bus
Price point: Somewhat open, but I have a budget in mind.

I'm mostly looking at Keysight, Tektronix, R&S, and Lecroy. I've used Keysight and Tek scopes a lot, and am pretty familiar with their user interfaces and pros and cons. I've never used R&S and Lecroy though - so was curious to get input from others based on their experience. I've also thought about buying used - any experience here? Have folks had success negotiating lower prices or additional gear when you're spending this kind of money on a scope?

Really not interested in third-tier manufactures (Rigol, Siglent, etc), and will not consider them. I'm just not interested in hacking, buggy firmware, etc. I need professional gear.

MrChips

Joined Oct 2, 2009
23,073
I think you want to be looking at a Teledyne LeCroy WaveRunner or WaveSurfer.

rsjsouza

Joined Apr 21, 2014
291
In power supply design you may not need deep memory, thus a Keysight DSOX3104T or DSOX4104A could work (I tend to prefer the DSOX4000 series just because of the form factor of the display) - the used option mentioned by @nsaspook is quite interesting. You can also take a look at Keysight's official eBay store.

Back in 2019 I had a chance to play with the new Tektronix models MDO3 and MSO4 but I found them terribly slow. Some other folks reported the situation did not improve much better even after a few firmware updates.

A few years ago I had the opportunity to play with a R&S (RTA4000) and both its functionality and interface were quite good, but they are very expensive.

tautech

Joined Oct 8, 2019
196
Moderators
Please explain why my earlier factual post has been deleted ?

Wendy

Joined Mar 24, 2008
22,328
Becausr the TS specifically asked you not to refer to Siglent and you did it anyhow. Next step is a thread ban, which leaves you unable to interact with this specific thread.

tautech

Joined Oct 8, 2019
196
Becausr the TS specifically asked you not to refer to Siglent and you did it anyhow. Next step is a thread ban, which leaves you unable to interact with this specific thread.
Hmm, maybe you did not fully read my reply before deleting it in haste ?
I informed the OP many LeCroy models are in fact Siglent rebrands and suggested a model that was best bang for buck in this class of DSO.
What the OP chooses in the end is their business as we can only inform them of what's in the marketplace for them to consider.

As you own a Siglent yourself you could well have stated the OP's view they are full of bugs is misguided but instead you delete an informative post.

tindel

Joined Sep 16, 2012
769

tindel

Joined Sep 16, 2012
769

tindel

Joined Sep 16, 2012
769
In power supply design you may not need deep memory, thus a Keysight DSOX3104T or DSOX4104A could work (I tend to prefer the DSOX4000 series just because of the form factor of the display) - the used option mentioned by @nsaspook is quite interesting. You can also take a look at Keysight's official eBay store.

Back in 2019 I had a chance to play with the new Tektronix models MDO3 and MSO4 but I found them terribly slow. Some other folks reported the situation did not improve much better even after a few firmware updates.

A few years ago I had the opportunity to play with a R&S (RTA4000) and both its functionality and interface were quite good, but they are very expensive.