Products > Test Equipment
New Siglent SDM4000A series Multimeter
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nctnico:

--- Quote from: Antonio90 on August 11, 2024, 07:05:42 pm ---
--- Quote from: Martin72 on August 11, 2024, 06:50:59 pm ---How do you measure the time in ms in such a test?
Do you have a trigger in your ear that triggers it?

--- End quote ---
Why would anyone need that? It's an audible cue. If it stops giving a beep each second, it's not giving a beep. It's not a precision measurement because it's not a precision function.

The time in ms is given by the SDG1062X. When the pulse according to the AWG is too narrow for the meter to give an audible beep, I dial it to be wider, with ms resolution, unless lower than a millisecond.

--- End quote ---
In that case you are not really measuring response time (time between detection and giving a beep) but the minimum detection time. While the minimum detection time is useful, it is only 1 part of the big picture. A better test would be to use a microphone and measure the time between the short and the tone being produced by the beeper.
Antonio90:

--- Quote from: The Soulman on August 11, 2024, 07:29:55 pm ---
--- Quote from: Antonio90 on August 11, 2024, 07:05:42 pm ---
--- Quote from: Martin72 on August 11, 2024, 06:50:59 pm ---How do you measure the time in ms in such a test?
Do you have a trigger in your ear that triggers it?

--- End quote ---
Why would anyone need that? It's an audible cue. If it stops giving a beep each second, it's not giving a beep. It's not a precision measurement because it's not a precision function.

The time in ms is given by the SDG1062X. When the pulse according to the AWG is too narrow for the meter to give an audible beep, I dial it to be wider, with ms resolution, unless lower than a millisecond.

--- End quote ---

That's only halve of the story, there still could be a noticeable delay/latency between when the continuity is detected until the beeper beeps.
I'd rate that at least as important.

--- End quote ---
That is true. I can try and test that although I'm not sure how.
KungFuJosh:
I think these tests are all useless unless they're conducted in an agreed upon and repeatable way. If variables aren't consistent, then comparison results are meaningless.

How is the the AWG set? Share a screenshot.

What is the threshold on the DMM?

I can set my AWG Period to 1ms, 1Vrms, and raise the threshold on the SDM3045X to 1kΩ, and that gives a constant beep.

For everything I tried, the main thing that stopped the SDM3045X from beeping faster is if the threshold is too low compared to the signal from the AWG.
bateau020:
About the  KS34465A: mine is on the latest FW, and also by hand testing, it is unusably slow. Maybe I got a hidden (read: SCPI) setting wrong. Found nothing related on the KS itself: one can only set beep on/off, no thresholds, nothing. Maybe another owner can confirm?

But hey, this topic is getting out of hand, it is supposed to be about the SDM4000A. And I'm partly guilty. This beep thing is more a subject for the DMM excel sheet.
skander36:

--- Quote from: bateau020 on August 11, 2024, 08:12:26 pm ---...

But hey, this topic is getting out of hand, it is supposed to be about the SDM4000A. And I'm partly guilty. This beep thing is more a subject for the DMM excel sheet.

--- End quote ---

Maybe we need a separate thread on this subject.
About SDM4000 I think his meaning is to offer a a real challenge to the market players while SDM3065X make competition only by price.
I hope we will see soon if 4000 will succeed.
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