Products > Test Equipment
Rigol DG1022Z or Siglent sdg1032x
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nctnico:

--- Quote from: mawyatt on June 12, 2022, 09:01:15 pm ---Personally we would never consider a modern DSO or AWG that's not directly compatible for Bode Plot capability.

Folks that downplay Bode Plots usefulness haven't spent the time with this built-in feature, and I count myself in that category a couple years ago!!

Before we acquired a SDS2102X+ (later a 2104X+) a FRA was employed for Bode Plots if available, usually not, or just the old hat input sweep, scope record, and then plot results which required having to convert in dB and getting the phase....real PITA!!

--- End quote ---
Network analysers have been around for a long time and these typically do the job quicker & better.
mawyatt:

--- Quote from: nctnico on June 12, 2022, 10:00:49 pm ---Network analysers have been around for a long time and these typically do the job quicker & better.

--- End quote ---

Yep and you pay a nice price for such :o

And the NA may not be a better choice always, regardless of price, since you now have another large expensive piece of equipment cluttering up the workbench!!

We've utilized many Network Analyzers, dating back well before the HP8510, so have considerable experience here, and can tell from first hand experience with the built-in Bode Plot capability for lower frequencies. This is quite useful and why now we wouldn't consider a DSO, nor AWG compatibility, without this built-in capability. Of course YMMV ;)

Best,
2N3055:

--- Quote from: nctnico on June 12, 2022, 10:00:49 pm ---
--- Quote from: mawyatt on June 12, 2022, 09:01:15 pm ---Personally we would never consider a modern DSO or AWG that's not directly compatible for Bode Plot capability.

Folks that downplay Bode Plots usefulness haven't spent the time with this built-in feature, and I count myself in that category a couple years ago!!

Before we acquired a SDS2102X+ (later a 2104X+) a FRA was employed for Bode Plots if available, usually not, or just the old hat input sweep, scope record, and then plot results which required having to convert in dB and getting the phase....real PITA!!

--- End quote ---
Network analysers have been around for a long time and these typically do the job quicker & better.

--- End quote ---

We had this discussion before. VNAs don't go to low frequencies and are not high impedance inputs.
Frankly, you need both FRA and VNA..
nctnico:

--- Quote from: 2N3055 on June 12, 2022, 10:52:13 pm ---
--- Quote from: nctnico on June 12, 2022, 10:00:49 pm ---
--- Quote from: mawyatt on June 12, 2022, 09:01:15 pm ---Personally we would never consider a modern DSO or AWG that's not directly compatible for Bode Plot capability.

Folks that downplay Bode Plots usefulness haven't spent the time with this built-in feature, and I count myself in that category a couple years ago!!

Before we acquired a SDS2102X+ (later a 2104X+) a FRA was employed for Bode Plots if available, usually not, or just the old hat input sweep, scope record, and then plot results which required having to convert in dB and getting the phase....real PITA!!

--- End quote ---
Network analysers have been around for a long time and these typically do the job quicker & better.

--- End quote ---

We had this discussion before. VNAs don't go to low frequencies and are not high impedance inputs.

--- End quote ---
Appearantly you forgot that low frequency network analysers which have high impedance inputs do exist. The one I have is the Anritsu MS4630B
2N3055:

--- Quote from: nctnico on June 12, 2022, 10:57:07 pm ---
--- Quote from: 2N3055 on June 12, 2022, 10:52:13 pm ---
--- Quote from: nctnico on June 12, 2022, 10:00:49 pm ---
--- Quote from: mawyatt on June 12, 2022, 09:01:15 pm ---Personally we would never consider a modern DSO or AWG that's not directly compatible for Bode Plot capability.

Folks that downplay Bode Plots usefulness haven't spent the time with this built-in feature, and I count myself in that category a couple years ago!!

Before we acquired a SDS2102X+ (later a 2104X+) a FRA was employed for Bode Plots if available, usually not, or just the old hat input sweep, scope record, and then plot results which required having to convert in dB and getting the phase....real PITA!!

--- End quote ---
Network analysers have been around for a long time and these typically do the job quicker & better.

--- End quote ---

We had this discussion before. VNAs don't go to low frequencies and are not high impedance inputs.

--- End quote ---
Appearantly you forgot that low frequency network analysers which have high impedance inputs do exist. The one I have is the Anritsu MS4630B

--- End quote ---

No I did not. It is discontinued product.. And new was very expensive.
Making a statement that a very expensive specialized instrument is better at something than a inexpensive FRA equipped scope is kinda obvious.. It should better be better...
The thesis here is going the other direction: FRA is good enough for most uses that you don't need to buy expensive specialized instrument for many tasks...
I would personally like to own a Bode100.. I just can't justify the investment..

And FRAforPico and Siglent's FRA running on 12 bit scope and even FRA on 8bit Keysight does a great job in general...
But lately it is mostly SDS6000/2000HD because it works great. I use external SDG6000/7000 generator if I need more signal, or 2000HD for all in one... Although integration with external AWG is seamless and just works...

Keysight implementation on 3000T is very easy to use and also very good. But Siglent's implementation is more  sophisticated and 12 bit and bigger screen wins.....
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