Voltage calibration of the OWON XDM1041 digital multi-meter
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- čas přidán 27. 08. 2024
- This is a neat little bench multi-meter which you can purchase for about £100
If you have a reference its fairly easy to calibrate but be careful to note down the factory setting before you start so if it goes south you can start again :)
The voltage reference I use is a REF102CU for the 10V which is accurate at 10V +- 0.0025% and drift of 2.5ppm/degrees centigrade so an order of magnitude better than the OWON :)
The 5V is derived from the 10V using an INA105 trimmed to 4 digits so 5.0000 or 1 ten thousandth of a volt but derived from the 10V so in reality 5V +- 0.0025%
I manufacture these boards and mount them in an enclosure with USB supply. Unfortunately the REF102CU is extremely hard to source and expensive.
N.B. All the REF102CUs obtained from China are fakes or the low spec REF102K so please don't waste your money, only the BB ones seem to be genuine
Calibration
Utility - Math - up - Range - down
then select debug
Apart from size, the very low power consumption is a real plus as the meter can be left on without damaging your finances...
I've had one since they came out. I love it for my casual home use, I don't need super speed. Great viddy!
I really love and appreciate your videos. Keep going your fantastic.
How did you find out how to get into calibration mode? Do you know if there is a calibration mode for the XDM2041?
Calibration options? Now I go for one :)
The second time you looked at 5V signal, you were looking at it on the 50V range, instead of more accurate 5V range.
I've noticed that even with a stable voltage source, the LSB bobbles +/- one or two counts meaning that OWon seems to be trying to provide more resolution then the meter is truly capable of providing. As a hobbyist the meter provides more resolution than I need but it would have been nice to know about the noisy LSB issue before I bought. Thanks for the instruction on calibration.
Nice video and thank you for sharing. Did you try adjust speed from low to mid to be default measurment?
i can adjust the speed but it seems to reset on power cycle
That is the problem I now.
Thank you 😊
great video for two reasons: 1) did not know this unit had calibration options OR speed options; 2) your voltage reference.
As to the latter: do you sell the boards/and or complete unit?
I have a few spare blank boards and one populated/calibrated in a box. If you want a board with schematic or complete unit I will create/share a link
Please how to calibration diode mode.
Sorry I have no information on that. I'm sure its just an approximate good / bad measurement. I would personally look up the diode spec and measure the forward voltage drop
Is there a way to zero the frequency reading? mine reads 50hz with nothing connected.
If you short the probes it should go to zero, its picking up the mains at 50Hz. You can do the same calibration set up procedure in frequency mode but its probably okay
That's normal, if you don't have the leads or connections grounded, then they will act as bad antennas, that will never-the-less pick up the ever-present "mains hum" frequency of your power grid that's pretty much everywhere in a house - 50Hz.
Thanks 😊👍🙏💯