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Yet Another DMM Indecision Post

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KungFuJosh:

--- Quote from: mawyatt on May 10, 2023, 05:52:28 pm ---That would be Smart, as you'll need all the digits & signals you can get in those Radiation Hardened Thermionic Emission Field Effect Encapsulated Devices to find those Leaking Electrons that were Thermionic Emitted from the Bright source and got lost on their way to be Collected at the Dark side :)

--- End quote ---

You're right, they are all overkill. But that never stopped TEAS before.  :-DD

tautech:

--- Quote from: KungFuJosh on May 10, 2023, 02:19:07 pm ---I think I'm just going to sell or trade my SDG2042X towards the SDM3055. I think my Amprobe covers my needs well enough compared to the other handhelds. With the minimal price difference between the nicer handhelds and the SDM3055, I don't see a reason not to get it. (besides it being overkill, not really needing it, etc.) Or maybe I'll be dumb and make room for both on my bench. 🤣


Also, just to throw this out there... Is there a $500 competitor to the SDM3055 that anybody thinks is as good or superior? I'm really not interested in a used meter, so let's not go there. Used meters are projects, I have plenty of projects.

--- End quote ---
Maybe knowing these products a little better than you....here's what I would do:
Keep SDG2042X for 2 reasons, one day you will need both the output drive capability and the 2nd channel.
Your scope FG output cannot compare with a standalone AWG.

Consider SDM3045X as it's fanless.
Also highly recommend you have a study here:
https://www.eevblog.com/forum/testgear/siglent-sdm3045x-enough-is-enough/

KungFuJosh:

--- Quote from: tautech on May 10, 2023, 08:37:58 pm ---Consider SDM3045X as it's fanless.
Also highly recommend you have a study here:
https://www.eevblog.com/forum/testgear/siglent-sdm3045x-enough-is-enough/

--- End quote ---

Is the fan noise that bad on the 3055 that it's a benefit to the 3045?

That thread is interesting, and hacking is fun, but is there a reason besides price and fan noise why you would opt for the 3045X instead?

BillyO:

--- Quote from: KungFuJosh on May 10, 2023, 09:40:39 pm ---Is the fan noise that bad on the 3055 that it's a benefit to the 3045?

--- End quote ---

Of the 6 Siglent machines I have the SDM3055 is the quietest save for the SPD3033X and SDL1030X before their fans come on.  After they do come on, it's the quietest.

I'm not sure why folks are so concerned about noise.  When I'm in my "lab" I usually 4 computers and at least 5 instruments turned on.  The addition of one more does not seem to make any difference.  And even with all those things going it's not what I'd call noisy and normal conversations are not in jeopardy. :-//

tautech:

--- Quote from: KungFuJosh on May 10, 2023, 09:40:39 pm ---
--- Quote from: tautech on May 10, 2023, 08:37:58 pm ---Consider SDM3045X as it's fanless.
Also highly recommend you have a study here:
https://www.eevblog.com/forum/testgear/siglent-sdm3045x-enough-is-enough/

--- End quote ---

Is the fan noise that bad on the 3055 that it's a benefit to the 3045?

That thread is interesting, and hacking is fun, but is there a reason besides price and fan noise why you would opt for the 3045X instead?

--- End quote ---
SDM3055 = SDG2042X fan noise, not bad but you know, the less the better.
Read that thread again, SDM3045X = China version SDM3055X-E = 5.5 digits for the 4.5 digit cost....and no fan !
The only difference is product type, set by code and firmware.

Here we sell 3045X to repair shops where instead of HH DMM's each repair bench sports a bench meter too.
Either model has been very reliable and when you get the customer come back for further units it says something about their satisfaction with them.

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