Products > Test Equipment
Decent modern Signal/waveform Generator here in early 2024
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2N3055:
One thing to note is that Rigols are hackable but in a way that after "upgrade" they are not fully adjusted in whole new BW.
Rigol is not doing that. After "upgrade", "liberated" BW is not properly leveled. There are topics here on that...
Funny enough, older Rigol DG1000Z was fully calibrated and adjusted so that one worked properly even after "upgrade".
wasedadoc:

--- Quote from: evmillan on January 07, 2024, 06:42:18 pm ---In case you want to measure very low resistances ....

--- End quote ---
What is the relevance of that to the OP's question?
blackdog:
Hi,

There are multiple function generators here.
As are power supplies and multimeters. :-)

The Siglent SDG1032X is the cheapest function generator I have here in the pictures and it is the most used.
Why, look at the picture showing how much abberation is present on the pulse display.
This is of course only one of the many functions of such a generator, but what is important for me, for the measurements I often do.

The Siglent SDG2042 is a 16Bit generator and that sometimes has its advantages and finally the Rigol DG4162 which has the important advantage of a 160MHz bandwidth.

The test condition here is 900mV TT at 50 Ohm.
This is because the Siglent SDG1032X has a special output amplifier if you stay below 1V TT output voltage.

The coax cables are good quality and I use a 20dB BNC attenuator on the scoop inputs to keep the corresponding generator from seeing reflections from the 50 Ohm scope input.

First picture
Here you can clearly see that the pulse of the Siglent SDG1032X has the highest quality.
SDG1032x = 3.3nSec
SDG2042x = 8nSec
DG4162     = 4.2nSec


.
This is the contraption to show how this measurement was done.
Everything is locked to a GPS reference and I had to make quite a few phase adjustments to compensate for generator delays and cable length variations. :-)


.
This picture is to show you how to get the best possible pulse on your scope, usually use at least a 10dB attenuator of good bandwidth and turn on the 50 Ohm input of your scope.
Also use quality good coax cables and connectors! Don't kid yourself.


.
So if a really nice pulse response is important to you then I could recommend the Siglent SDG1032.

That's the reason I bought it, even though I already had plenty of function generators.
Here in the Netherlands this Siglent SDG1032X costs about 335 Euro and I than recommend this generator to many people.
A lot of hobbyists and Pro users are not really aware of the possibilities that the modern function generators give you.

Example
Last week tested some AM detectors for demodulation distortion, a week before that tested some Darlingtons and Sziklai pairs for bandwidth directly fed from the SDG1032X.
If you need a DC source, you can also use the function generator in a number of applications and there are many more.

I wish I could have bought something like a Siglent SDG1032X 30 years ago.
Back when I still had a lot of HAM applications for my hobby.

I hope this helps a little in the considerations.
And then I haven't discussed a lot of features of modern feature generators.

Kind regards,
Bram
nctnico:

--- Quote from: Mechatrommer on January 06, 2024, 11:16:37 pm ---missing numeric pads is why i choose Uni-T UTG962 over FY6900. i know one day people will realize this if not mentioning it in public... UTG962 is small form factor and accepts 5V (DC jack) the drawback is trying to play arbitrary signal with it is a bit cumbersome. but i dont use arbitrary much. ymmv.

--- End quote ---
IMHO the Uni-t models are a good buy. The more expensive Siglent SDG1000 doesn't bring much extra to the table in this market segment so value for money is low.



--- Quote from: Martin72 on January 07, 2024, 12:07:04 am ---And I still dream of a dedicated CMOS level output...

--- End quote ---
Forget about that. The problem is that a waveform generator doesn't have the features you really need in a digital pattern generator. Been there, done that. If you want a digital pattern generator, then buy a digital pattern generator with good software.
blackdog:
Hi

The more expensive Siglent SDG1000 doesn't bring much extra to the table in this market segment so value for money is low.

That of course depends on what your application is, for your applications the Uni-T suffices thats OK, others and I obviously have different preferences, that's how life is.  ;)

Kind regards,
Bram
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