Thank you for this very in-depth review. Dave Jones did a tear down of the SDM3055 and I liked the build quality. This is higher accuracy and brilliant value for money compared with the Keysight of which it's a copy. It's on my shopping list now! :-)
You should test the 2 wire and 4 wire resistance measurements using a sub ohm resistor. To really push it you can "try" a standard Current Shunt, 10 Amp, 75 millivolt, 5% (75/10=7.5 milliohm) More realistic results might be obtained with 0.5 or 0.25 ohm resistors. Validate using a known current and the voltage drop across the resistor.
I think on other channels it has been mentioned before but the Siglent SDM3065X front panel looks almost identical to the Keysight 34461A. I have the Keysight and also the Fluke 45 and enjoy them. I bought the Fluke 45 what seems like decades ago ; ) You have a nice channel and I subscribed.
I have this exact multimeter. It has an adjustable continuity threshold. Today, I found a handy use for that function... I had a diode in parallel with a low value resistor. Measuring the diode in circuit (yes, I know that is not a good idea, but I was spitballing) the diode showed as bad with both the diode function and the continuity function. I dropped the continuity threshold and the diode showed as good. What other uses is this function good for?
I have just bought two used 50$ uni-t ut801 bench multimeter, just to check if there is power or not. I know that they can't measure more accurate then my own tongue and a finger in the ground, but still great to have, just for getting a idea about the amount. :-) Have you ever looked at one?
could you please make a short video showing the general update rate and specially autoranging speed of the device in various modes (Cap, DCV, R for example) also the diode testing.
bobwhite137 - there was no noticeable drift when I last connected it to my AC or DC calibrators, I will be checking it’s calibration sometime soon when I get my hands on a nice freshly calibrated calibrator.
ALL multimeters that do capacitance, they do it by charging the cap with a constant current source and measure the rate of charging i=C (dv/dt). So it is basically at DC by ramping up the charge linearly and see how long it takes to reach a threshold voltage and then they calculate it. This is very different than LCR meters which are based on impedance measurement using a wheatstone bridge usually.
You trust more to that crap chinese voltage reference with 6 meters in parallel? Really? What impedence you have here? 1.66MOhm. And a lot of antennas, a lot of loosey connections between wires, what roomtemperature? what do you know about electronics? i guess the siglent is the most acurate device here - fresh calibrated... your reference isnt a thrue reference under that circumstances....
AllesDriss - I wasn't looking at absolute accuracy, using that reference obviously, what I was looking at was relative accuracy between the meters, any stable voltage source is usable for that,
I'm with LastManStanding; this whole video is questionable. You have a bunch of meters all hooked up in parallel and none of their measurements agree. Buy yourself a calibrator if you are going to make videos like this.
Nick Tolley - of course they all say something different, that was part of the point of doing it, no two meters will say exactly the same thing,unless they have just been calibrated, my fluke and hp meters haven't been calibrated in over a decade, the Vici is questionable regardless, and the eevblog doesn't have the resolution. All the meters should be fine in parallel when they are reading the power supply, that isn't short of current. Besides the amount of error between them is very small, the worst error was on the vici, which was expected. I do now own a calibrator, I did a few videos on its repair.
Thanks a lot for a great review, worth every minute! I am new to all this so please forgive my question but why bye a 6 1/2 instead of a cheaper 4 1/2 if it is only accurate to two digits?
Damn, I just realised that I doubled up a bit of the video at 50minutes, I have no idea how I did that.
Thank you for this very in-depth review. Dave Jones did a tear down of the SDM3055 and I liked the build quality. This is higher accuracy and brilliant value for money compared with the Keysight of which it's a copy. It's on my shopping list now! :-)
When you think of the price of the power supply, it is wary impressive how accurate it is!!
excellent bargain - feature packed for the price. I will be getting one for my shop. THANKS!
You should test the 2 wire and 4 wire resistance measurements using a sub ohm resistor.
To really push it you can "try" a standard Current Shunt, 10 Amp, 75 millivolt, 5% (75/10=7.5 milliohm)
More realistic results might be obtained with 0.5 or 0.25 ohm resistors.
Validate using a known current and the voltage drop across the resistor.
I think on other channels it has been mentioned before but the Siglent SDM3065X front panel looks almost identical to the Keysight 34461A. I have the Keysight and also the Fluke 45 and enjoy them. I bought the Fluke 45 what seems like decades ago ; ) You have a nice channel and I subscribed.
May I please ask you on what you think about your Siglent 6.5 now, after all that time?
Do you know how it compares to the Keysight 6.5 dmm (34461A)?
I have this exact multimeter. It has an adjustable continuity threshold. Today, I found a handy use for that function... I had a diode in parallel with a low value resistor. Measuring the diode in circuit (yes, I know that is not a good idea, but I was spitballing) the diode showed as bad with both the diode function and the continuity function. I dropped the continuity threshold and the diode showed as good. What other uses is this function good for?
Which one would you recommend as your favourite bench style multimeter?Thanks rich
Yes, it will be a "k" thermocouple, and polarity will matter.
I have just bought two used 50$ uni-t ut801 bench multimeter, just to check if there is power or not. I know that they can't measure more accurate then my own tongue and a finger in the ground, but still great to have, just for getting a idea about the amount. :-)
Have you ever looked at one?
Fried Mule - I haven’t looked at those no, I’m not familiar with them.
could you please make a short video showing the general update rate and specially autoranging speed of the device in various modes (Cap, DCV, R for example) also the diode testing.
01:29:00 shows update rate of the display and effect of PLC (power line cycle) and ofcourxe with and without auto zero
Thank you for this review - just curious, now that you've had this for a couple of years, have you checked for drift against a good reference?
bobwhite137 - there was no noticeable drift when I last connected it to my AC or DC calibrators, I will be checking it’s calibration sometime soon when I get my hands on a nice freshly calibrated calibrator.
Difficult for see all same time, wht do you think SDM3065X compared fluke or agilent , is good for calibratre over equipment reference ??
ty ++
is this siglent range,,, for only the ac mv setting,, dc or ac coupled... need to check ac ripple of 12v dc power supply
ALL multimeters that do capacitance, they do it by charging the cap with a constant current source and measure the rate of charging i=C (dv/dt). So it is basically at DC by ramping up the charge linearly and see how long it takes to reach a threshold voltage and then they calculate it. This is very different than LCR meters which are based on impedance measurement using a wheatstone bridge usually.
Can you do review for Vici 8145
Le Hoang Hiep - doing reviews on my day to day test gear is something I had been thinking about, so it could happen at some point yes.
I have checked over Vici website Vici 8145 is not True RMS, I dont understand why this kind of device class dont have true rms function for vc8145 ...
How the hell do you turn math off once you’ve turned it on?! It’s maddening…
Nevermind sorted very awkward tho imho.
full of adverts
Thanks for letting me know! You are right youtube am has stuffed it full of ads ! I will fix that.
You trust more to that crap chinese voltage reference with 6 meters in parallel? Really? What impedence you have here? 1.66MOhm. And a lot of antennas, a lot of loosey connections between wires, what roomtemperature? what do you know about electronics? i guess the siglent is the most acurate device here - fresh calibrated... your reference isnt a thrue reference under that circumstances....
AllesDriss - I wasn't looking at absolute accuracy, using that reference obviously, what I was looking at was relative accuracy between the meters, any stable voltage source is usable for that,
I did mention room temperature in the video, I don't remember what it was, but I did state it.
I'm with LastManStanding; this whole video is questionable. You have a bunch of meters all hooked up in parallel and none of their measurements agree. Buy yourself a calibrator if you are going to make videos like this.
Nick Tolley - of course they all say something different, that was part of the point of doing it, no two meters will say exactly the same thing,unless they have just been calibrated, my fluke and hp meters haven't been calibrated in over a decade, the Vici is questionable regardless, and the eevblog doesn't have the resolution.
All the meters should be fine in parallel when they are reading the power supply, that isn't short of current. Besides the amount of error between them is very small, the worst error was on the vici, which was expected.
I do now own a calibrator, I did a few videos on its repair.
Thanks a lot for a great review, worth every minute!
I am new to all this so please forgive my question but why bye a 6 1/2 instead of a cheaper 4 1/2 if it is only accurate to two digits?