ITTSB.EU Blog Forum
Electrical Test and Measurement instruments => Bench-top multimeter => Topic started by: Kiriakos GR on November 29, 2025, 07:33:39 PM
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I have few thoughts to share about rdgs/s measurement speed.
Nowadays mostly Chinese DMM makers, they mention this specification at their top four of marketing points, in favor of a product.
rdgs/s = Readings per second, and or measurements taken within one second of time.
Readings per second, indeed this is related to speed.
Yes but, here we have a problem, high rate of rdgs/s this is useless, if the measurement cannot be logged due external software.
The obvious competitors here, these are RIGOL and SIGLENT, both trying to impress the uneducated buyer, by them throwing high numbers as rdgs/s.
Currently neither RIGOL or SIGLENT, after all these years, they were deliver a data logging software of their own.
SIGLENT did a poor attempt, by releasing a software this recording everything to Microsoft Excel file, and this is all.
Nether FLUKE Corporation did much about their 8846A, this capable for 1000 rdgs/s.
Personally and since April 2020, with the assistance of a Japanese software developer, we succeed, to get a number of 16~18 measurements per second, logged within software, due RS232 USB connectivity.
Siglent SDM4065A 6.5 Digits 50000 rdgs/s :P
Siglent SDM4055A 5.5 Digits 4800 rdgs/s :P
RIGOL DM3068 6.5 digits 10K rdgs/s :P
My message to anyone alive, from the electrical Test and Measurement industry.
Do not expect our money, when you are still delivering unfinished product solutions.
And you better stop this marketing toying around, by using rdgs/s as indication of hardware performance.
Expert DMM users they need instruments which they do deliver real world performance, and not imaginary.
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And due the fact that I do challenge entire industry, I am attaching proofs, so to make them feel even worst. :P
Attached screenshot and CSV for your entertainment. ;D
Log duration only 21 seconds.
And Linear PSU warm-UP 5Min CSV
(DC mode, test leads disconnected)
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And as closer I will add sample from ACV.
Every owner of 8846A he can enjoy 3.5~4.5 mV AC, when having the meter with out test leads.
How about logging this, with also 17 measurements per second. ;D
I will add at the team of poor performers, and GW Instek, they also sleep under the tree, and expect sales.
(For a better review save the images on your PC)
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All these brands, they could had escape from appearing as total idiots, by simply hiring a professional software developer, him to develop a data logging suite for them.
I will give my vote in favor of Kiriakos, his complain its valid.
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I will give my vote in favor of Kiriakos, his complain its valid.
Fifteen years ago, this fact, it could be considered as complain.
But not anymore.
LXI instrument network communication, this is 100% industry related project.
Retail customers, them buying test equipment for personal use and or for small projects, we are unable to benefit from this digital instrumentation.
Bench Top DMM this is not equal product design to Oscilloscope, regarding the Record to Memory function.
Bench Top DMM and recording to memory, or to USB stick, this has less than 5% usability benefit for the 95% of DMM owners.
Long story in sort, its now an consumer level obligation, us to stop buying anything coming out with poor R&D and poor PC software support.
And regarding product specifications, its an obligation of the manufacturer, him to present clearly, Max number of measurements, that its instrument this can deliver due it RS-232 port per second.