Products > Test Equipment
New bench scope - Fnirsi 1014D, 7", 1GSa/s
tunk:
--- Quote ---I have bought a unit of the 1014D and it has come up with a problem that channel 1 does not measure DC voltage.
--- End quote ---
Could look like the same problem that was fixed in the video above.
rpa:
I bought recently the FNIRSI 1014D and I am fairly pleased with it for the price I paid, around 140€ with shipping. Quite cheap for such a device. It's easy to use and one of its attractions to me is the fact you can power it from a common 5V smartphone powerbank, making it ungrounded. It has its flaws and limitations though, most already stated here but to me the most restricting is the 50mV limit.
Updated the firmware with the latest one available on FNIRSI's site and have been doing some tests with it with various sources, including the internal signal generator. Bear in mind I'm a begginer enthusiast in electronics, still learning. I learnt how to use a CRT oscilloscope in University Electronics classes 25 years ago so I do understand the basics of electricity and electronics, been picking the subject again lately (I work in IT). I also have a Hantek DSO5202D, it's a fairly decent oscilloscope and it has a 16ch logic analyzer I was interested on.
I think I found a couple bugs in the latest firmware, already sent an email to FNIRSI detailing them and how to reproduce them.
Both bugs happen in both channels and are caused when you press the trigger MODE button to change the trigger type, each bug depends on some conditions. The bugs are:
- This is independent of having just one or both channels active. If the vertical sensitivity (V/div) is different from 1V in 1x mode or 10V on 10x mode and you press MODE, the DIV parameter shown on the channel settings on top of the screen always goes back to 1V or 10V respectively and the voltage measurements start showing wrong values; the wave display usually stays the same size, but might disappear if the set V/div is higher than 1V or 10V respectively.
- If you only have 1 channel active and the coupling of the channel was set to AC and you press MODE, it always changes to DC on the channel settings on top of the screen and it seems it always changes to DC coupling even if you press MODE twice to go back to Auto triggering (it starts to show the DC component of the signal instead of only the AC component). It does not happen if both channels are active!
Other than that, it seems a somewhat capable device for the price for a hobbyist or a begginer.
rpa:
Just a heads up, FNIRSI did respond to my email about a week after I posted my last message, and sent me an updated firmware in the form of 2 slightly different firmware files. Sorry for not reporting this earlier but I just didn't have the time and mind, due to other stuff going on in my life, and I also didn't know if they wanted the firmwares made available generally. The files are now available in their suport page at their site.
The reason for 2 files is that the 1st batch of the 1014D use a different LCD and that's why some have experienced displaced images. I tried the 1st firmware and it displaced the image down and to the right, so it's probably the right one for those which had the displacement up and left. The other one worked fine with my unit. The 2 bugs I mentioned here were fixed and it works just fine now.
So, a good and fast response from them, kudos.
pcprogrammer:
Received this scope yesterday as a gift from a forum member who likes my work on the FNIRSI-1013D :)
I can say that they improved on some of the flaws found in the FNIRSI-1013D, but is uses basically the same hardware.
Could not resist and had to open it up. Made a disappointing discovery. There is no integrated DAC for the function generator. It is 8 digital outputs from the FPGA into a resistor network, most likely R-2R. See the attached photos.
For the knobs and push buttons they use a GD32E230, so most likely no hacking of that part of the system.
The PCB is nice though. Gold plated on parts of it.
dmitrkov:
The support site has a new firmware from 08/08/2021
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