Products > Test Equipment

New toy(?) scope Fnirsi DPOX180H, claimed 180MHz/500MSps (May 2023)

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csuhi17:
I think the vertical cursor is a big bug, I don't see any point, especially if the two channels have different sensitivities.
Has anyone been able to use it for anything?
The question is why they haven't fixed it yet, even though they know.

I hope they add a persistence feature, then it will be possible to use it at least as much as the DSO2512G.

However, it is a good thing that they at least deal with it and have it repaired,
I have an instrument of a higher quality manufacturer, which I bought when it was released, but they added a new series and it went to the compressor... it has functional shortcomings, although the hardware could handle it, no updates...

battlecoder:

--- Quote from: csuhi17 on October 07, 2023, 07:54:04 pm ---I think the vertical cursor is a big bug, I don't see any point, especially if the two channels have different sensitivities.
Has anyone been able to use it for anything?
The question is why they haven't fixed it yet, even though they know.

I hope they add a persistence feature, then it will be possible to use it at least as much as the DSO2512G

--- End quote ---
Yeah, the cursors are nearly unusable like this. I also hate that you can "move" and change CH2 or CH1 params even when a channel is not enabled, but that's a minor annoyance.

Persistence would be great, really.

I still can't believe that the DSO2512G, which is more basic in every possible way; has a simpler, crude trace display, extremely basic menu system (although shortcuts massively help), severely limited bandwidth (doesn't get anywhere near the claimed 120Mhz), no capture-and-replay arbitrary waveform functionality, no 20Mhz bandwidth limit, no temperature-colored trace, etc, still outmatches this scope when it comes to actually using it to make measurements or debug circuits  :palm:, but that has also been my experience so far.

Aldo22:

--- Quote from: battlecoder on October 07, 2023, 09:00:31 pm ---severely limited bandwidth (doesn't get anywhere near the claimed 120Mhz)

--- End quote ---

I wouldn't put it that harshly.
It is certainly no longer in its comfort zone "up there", there is some jitter and the amplitude drops, but mine can definitely trigger and measure 120 MHz sine.
That is at least something. E.g. OWON HDS272 can't do that.

Otherwise, I agree with you that the Zeeweii is a no-frills tool.

battlecoder:

--- Quote from: Aldo22 on October 07, 2023, 09:25:52 pm ---
--- Quote from: battlecoder on October 07, 2023, 09:00:31 pm ---severely limited bandwidth (doesn't get anywhere near the claimed 120Mhz)

--- End quote ---

I wouldn't put it that harshly.
It is certainly no longer in its comfort zone "up there" and the amplitude drops, but mine can definitely trigger 120 MHz sine.
That is at least something.

Otherwise, I agree with you that the Zeeweii is a no-frills tool.

--- End quote ---
I like the Zeeweii, but at least my unit becomes very jittery above 50 Mhz, even with "overclock" mode enabled (which is according to the manual how it can get to >100Mhz). It' already a bad sign when the manufacturer recommends you to temporarily engage "overclock" mode to reach the claimed bandwidth). So I'm not willing to call the Zeeweii a 120Mhz scope. I tend to consider it more of a 50Mhz scope, and that's already more than acceptable for the form factor and price.

Aldo22:

--- Quote from: battlecoder on October 07, 2023, 09:52:40 pm ---I like the Zeeweii, but at least my unit becomes very jittery above 50 Mhz, even with "overclock" mode enabled (which is according to the manual how it can get to >100Mhz). It' already a bad sign when the manufacturer recommends you to temporarily engage "overclock" mode to reach the claimed bandwidth). So I'm not willing to call the Zeeweii a 120Mhz scope. I tend to consider it more of a 50Mhz scope, and that's already more than acceptable for the form factor and price.

--- End quote ---

I know what you mean and it can be put that way.
It's a bit like asking whether the bottle is half empty or half full.
I also find that it works quite well up to 50MHz and a less well above that, but that's enough for me at this price.
Nevertheless, I can check with this cheap device on which frequency a FM test transmitter works (88.0 MHz - 108.0... MHz) and you can't do that with every toyscope.
It also does not need 3 volts at the input for that, like my AWG with "frequency meter", but a few millivolts are enough.
I find that for its price it is quite a useful device and it does not annoy me.

The Fnirsi costs at least $40 more and that is quite a difference at this price level. Almost not comparable. ;)

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