Products > Test Equipment

Fnirsi -TC3

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KungFuJosh:

--- Quote from: slavoy on August 13, 2023, 08:27:55 am ---Interesting. Perhaps another firmware bug? The TC3 has the ability to update (one update has already been released), so it might be worth informing Fnirsi about this issue.

--- End quote ---

That's cool, I didn't expect to see updates. They can be downloaded here through the firmware tab: http://www.fnirsi.com.cn/download/digit

It's all in Chinese, but pretty straight forward expect the apply button is just the right area of the dialog box, and not clearly a button.

It's odd that I can't find a screen that shows the current system info.

siealex:

--- Quote ---In the picture you can see how a mosfet P is invented from a 4.7 uF tantalum capacitor.
--- End quote ---

Usually these testers see a tantalum capacitor as a diode with the corresponding capacitance in the reverse direction.

slavoy:

--- Quote from: siealex on August 11, 2023, 08:32:38 pm ---
--- Quote ---The component tester made a mistake once, showing a P-MOSFET instead of a PNP transistor
--- End quote ---
Did it show "enhancement mode" or "depletion mode"? Some component testers confuse some types of BJTs (especially germanium) with JFETs or depletion mode MOSFETs.

--- End quote ---
It was KSR2004 PNP transistor shown as P-MOSFET in TC3. I compared it with the GM328A tester and it recognized the BJT correctly.
I think the TC3 needs slightly better firmware. Inside, there's an ARM Cortex with USB support, so it has a lot of power. The TC-X and GM328A testers use simple 8-bit ATmega chips, yet they offer impressive capabilities, thanks to the well written code.
I forgot about the built in Zener diode tester (32V max) - very handy.

picburner:

--- Quote ---It's odd that I can't find a screen that shows the current system info.
--- End quote ---

The screen with the system info is the one in the picture.
Press and hold "OK/Menu" for a while to get there.
Unfortunately my firmware is the latest available.
I hope the manufacturer fixes these bugs because overall, considering its category of price, the instrument isn't too bad.

KungFuJosh:
Thanks! That's good to know. I think they'll fix the fixable bugs eventually. I turned off the logo in there, now it starts up faster lol.

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