Has anyone seen the UTD2102CM ?

[T4P]

DISCLAIMER: We all know UNI-T is okay for all their handheld meters EXCEPT 70x and 71x


Channels
2
Bandwidth
100MHz
Sample rate
1GS/s
Rise time
?3.5ns
Memory depth
16Mpts
Waveform acquisition rate
?150000wfms/s
Vertical sensitivity (V/div)
2mV/div~10V/div
Time-base range(s/div)
2ns/div~50s/div

I think the acquisition rate is right, but i don't believe that is the update rate
16Mpts ? ... Doesn't sound legit

[alm]

The previous Uni-T scopes were not very impressive and had misleading specs for memory depth (I don't remember specifics, it was discussed on this forum). I would not buy one sight unseen and would be wary of trusting the datasheet (I agree that 150kwfms/s at 16 Mpts sounds very unlikely). I would not be surprised if 16 Mpts was not available at high sweep speeds, in dual channel mode or at fast waveform update rates. If it's available at all.

[T4P]

The previous Uni-T scopes were not very impressive and had misleading specs for memory depth (I don't remember specifics, it was discussed on this forum). I would not buy one sight unseen and would be wary of trusting the datasheet (I agree that 150kwfms/s at 16 Mpts sounds very unlikely). I would not be surprised if 16 Mpts was not available at high sweep speeds, in dual channel mode or at fast waveform update rates. If it's available at all.

Exactly, UNI-T's bench division always lied so yes they are lying again

[electronica]

Hello,
First my English is not good, but i´ll try do the best .
I bought one UTD2102CM last week , and after search on web for this oscilloscope, i found this forum, that talks about Mpts.
The manual said that this UTD2102CM has 16Mpts of memory depth, anyone have any sugestion how i test it?
In my opinion this oscilloscope has many features that is great , but have one defect that i not like, it´s the noise of the fan.
What is the best (fast)  digital oscilloscope 100Mhz ?

[T4P]

I like the SDS7102T but most folks here like the DS1102E/1052E
The easiest way to test the "16Mpts" is to look at the sample rate, unless you do a teardown we won't actually know how much memory it has
for the rigol or hantek the 1Mpts memory blurts out pretty quickly ( literally drops to a few samples at longest timebase )

https://www.eevblog.com/forum/blog-specific/rigol-ds1052e-sample-rate-vs-timebase-setting/msg115443/#msg115443

[0xdeadbeef]

Well, they probably put some DRAM in which is not full speed but limited to the MSa/s range or whatever.
Hard to imagine that this is even close to a Rigol DS2000.

[T4P]

Well, they probably put some DRAM in which is not full speed but limited to the MSa/s range or whatever.
Hard to imagine that this is even close to a Rigol DS2000.

Not even.

[electronica]

Thanks DaveXRQ for the reply, but i can´t understand how test it, if you have one example i apreciatte .
My knowledge of oscilloscope is not much.

[Nermash]

Hi, here are some steps that I would use to check this:

Enable only channel 1, horizontal speed at cca 1 ms/div.
Hit the Acquire button, then see if there is some setting like depth, points, mem or simillar.
Set it to max value of 16 Mpoints.
Check that display indicates this memory depth.
Wind the wick (timebase) all the way to fastest setting (should be 2 nS/div @ 1 Gs/s).

Tell us what the display says about memory depth at that setting.
Do it all the same now with channel 2 enabled...

[tinhead]

Well, they probably put some DRAM in which is not full speed but limited to the MSa/s range or whatever.

right, you can even find something about in the user manual, see pictures.
Translated :
single channel - short memory 6kpts, long memory 16Mpts
dual channel - short memory 6kpts, long memory 8Mpts each

so definitely there is more memory inside. From the pure size to price ration must be SDRAM/DDR
therefore possible that the long memoryis even 1GSs running.

more "interessting" is this :

Waveforms/sec: 150,000

This is a lot for FPGA based device, when this is truth (combined with the memory depth) the UNI-T
managed to create something nice - when the firmware has been modified from what it was on older models.

I would be really happy if someone could make pictures of what inside

[T4P]

Fact of matter is that waveform update rate is definitely a lie, no?

[0xdeadbeef]

It's at least very, very hard to believe. At this point, all scopes with such a high update rate use a specific and pretty expensive ASIC with lots of internal SRAM to create that graded "digital phospor" image data. Maybe they have a completely different definition of "waveforms per seconds". Maybe they  define this as how often they can update the 6k memory or whatever.

[hansan]

On paper is this a nice low end scope with a good feature set; but the waveform update rate is extremely high (150k/s) compared with others in this segment.

I was wondering if someone has found some more information about this Uni-t UTD2102CM during the past months.  I did find a kind of review: https://www.mortoncontrols.com/blog/files/eb92360c960c591bec7e5dec250b28e1-29.html but that also does not give any background on the claimed update rate.

At the other hand there are also not many complains about this scope either; the UTD2102CEL got more negative attention.

Does someone have this scope? And is it any good?

[ramast]

I bought a UTD2102CM and quiet happy with it.
However mine is shipped with firmware v1 whereas latest firmware is v2.

Although firmware installation is fairly easy (put it in usb and boot the machine), I've struggled for weeks to find downloaded version of firmware v2 without success.

I've even asked a Chinese friend to call the company, they gave her an email to contact which I did and response was "we don't have"

If any one have any idea how to obtain latest firmware that would be awesome.

Also I am planning to make a review about the oscilloscope, however being a beginner I'd appreciate any ideas on different test aspects you wish to see