Products > Test Equipment
Hacking the Siglent SDM3055 Bench DMM
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klausES:
Thanks for the explanation.

I will take a closer look at the behavior and test the suggestions when the device arrives (hope tomorrow).

At first I only came up with the idea because the fan will get a temperature-controlled control right from the start (possibly also a quieter fan type).
Then a regulated "very specific selectable and then constant" higher temperature than the fluctuating environment would have offered itself.
Kleinstein:
A temperature regulated fan is a two sided thing. With changing air speed temperature gradients can change - this can have more effect than the overall temperature change.  It really depends on the circuit if a temperature controlled fan helps of makes things worse.
klausES:
Thanks for the information. I can understand your objections regarding fluctuations.
I'll pay attention to that.

In any case, a linear series regulator is planned here (neither pwm on the power side,
nor something clocked in the measurement and control).

There will also be no "fluctuations" by simply switching on / off,
Instead, an adjustable minimum speed (always active as a base load), an adjustable incline, a delta t> 1 kelvin
and a limitation of the maximum speed (moderate, far below the possible full speed of the fan).
killingtime:
Really like the new interface. It's an improvement on the standard.

Putting the measurement units after the measured value (e.g. mV) in larger typface like Keithly have done makes it easier to read.

Making the measured value digits larger would be an idea - if there is space on the display. Means you can read the meter from further away.

Well done.
alexvg:
Hi,

I'm currently working hard on the HTML/CSS rendering engine.
I don't know when I could release a test version.


It's a long way...

Edit: You could try these mods :
6.5 digits : https://www.eevblog.com/forum/testgear/hacking-the-siglent-sdm3055/msg2614659/#msg2614659
7.5 digits : https://www.eevblog.com/forum/testgear/hacking-the-siglent-sdm3055/msg2612406/#msg2612406
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