EEVblog 1723 - AlienTek DM40 Multimeter/Oscilloscope Review

[EEVblog]

Review of the AlienTek DM40 Multimeter/Oscilloscope
https://s.click.aliexpress.com/e/_c4EPQJod

00:00 - Alientek DM40C Multimeter and Oscilloscope
02:12 - Unboxing
03:51 - What's with the rotating tilting bail?
06:15 - Power on
08:53 - The Trend Chart is really nice
10:19 - Online/Offline mode, what IS this?
11:58 - Banana jacks please
12:07 - Megaohms interference issue
13:20 - Autoranging speed & Continuity & Diode
14:08 - No AutoHold
14:31 - Isolated inputs?
14:58 - Calibration checks
16:52 - Capacitance interference?
18:37 - Relative mode
19:10 - Colour LCD inside and outside
20:04 - Temp is a bit off
20:15 - No internal recording
20:53 - Reading memory
22:02 - Oscilloscope functionality
26:28 - Function Generator
28:46 - FFT
29:09 - Bluetooth functionality
31:33 - Three Finger Screen Shot
32:31 - It's got magnets!
32:51 - Teardown
37:56 - Analog front end
38:46 - Power consumption measurement
39:03 - PCB inspection talking head
45:08 - Conclusion

[TUMEMBER]

Review of the AlienTek DM40 Multimeter/Oscilloscope
https://s.click.aliexpress.com/e/_c4EPQJod

Dave, Unfortunately, the link doesn't work. Ali creates " access zones." For a split second, I see the product page, and then a "404 page" pops up. This "pig algorithm" targets the audience.

[Fryguy]

That 4 pin connector on the lower right looks like a serial interface to me .

V-D-C-G = Voltage-Data-Clock-Ground maybe ? 

[gamalot]

The resistor divider is from a Chinese maker, spec'd at 0.1% and 10 ppm/°C.

[free_electron]

That 4 pin connector on the lower right looks like a serial interface to me .

V-D-C-G = Voltage-Data-Clock-Ground maybe ? 

SWD for the arm ?

[free_electron]

anyone knows who makes those dc/dc transformers ? and what is the driver chip ? i've used the TI and maxim chippies, but these look from a different vendor.
the little trasnformers are interesting.

[gamalot]

anyone knows who makes those dc/dc transformers ? and what is the driver chip ? i've used the TI and maxim chippies, but these look from a different vendor.
the little trasnformers are interesting.

I couldn't find any info on the LT61-11x, but there's some available for the LT51-11x that you can use as a reference.

[Fungus]

Nice!

This could be the new recommended piece of test gear for newbies to get.

One thing: Does it work while plugged in? Can I powered it all day long with a phone charger?

[EEVblog]

This could be the new recommended piece of test gear for newbies to get.

I wouldn't say that because:
a) It's not cheap.
b) If you just want a multimeter then there is better bang-per-buck out there.
c) If you need a portable scope then there is probably better bang-per-buck out there.

[EEVblog]

Alientek said the iOS is available on the iOS store.