Questions tagged [test]
A definitive procedure that produces a test result.
206
questions
34
votes
5
answers
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Testpoints: Vias versus pads
I was fixing an ultra cheap home router few days ago and noticed that it had vias marked TP_12V, TP_3V3, TP_GND and similar. The problem turned out to be leaky electrolytic crapacitors in the buck ...
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22
votes
5
answers
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How can we test the lifespan of electrical components?
We work with some electronic devices in our projects. We are at the stage where we need to create some test strategy to validate the lifespan (e.g. 1 to 5 years) of our devices for which we provide ...
- 229
19
votes
3
answers
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What is Full form of hFE of a digital multimeter?
In digital multimeter, there is a transistor-check function, and there is a term hFE. I do-not know how-to use-it, however, different Websites say it is a measurement transistor's gain ("the ratio of ...
user107801
19
votes
1
answer
670
views
Soft-CPU verification
I'm currently in the process of designing a simple CPU in VHDL using Xilinx ISE and ISIM. The design portion is going remarkably well, but I can't seem to figure out a way to do verification in a ...
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17
votes
6
answers
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What unit test framework can I use for a c based mcu project?
I'm thinking about how I can use unit tests in my mcu project,
and what frameworks I can use to simplify it.
Today I am using a stm32 with OpenOCD-jtag from a Linux pc,
where it is all controlled ...
- 2,385
16
votes
8
answers
17k
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What is the difference between testing and verification?
Every textbook I've seen makes a big deal of the fact that testing and verification are two different concepts. Yet none of them provides a clear (or clear enough to me, at last) distinction.
To ...
- 161
16
votes
1
answer
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Does anybody have any idea what this piece of equipment is?
A friend of mine picked this up at a garage sale where an elderly electrical engineer was selling a bunch of old test equipment.
It's missing a faceplate where it should name what it is, and he's ...
- 161
14
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1
answer
2k
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13
votes
4
answers
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How to test a crystal resonator in board?
I have 2 quartz crystal resonators in my pcb board: 32.768 kHz & 20 MHz. They are connected to a Freescale MC12311 transceiver IC, which has an HCS08 micro-controller embedded in it. I want to ...
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13
votes
4
answers
10k
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Continuity tests, risks?
Even though the electronic device is powered off, isn't there a risk of doing a continuity test on connections in the middle of the circuitry ?
I mean, you do apply voltage doing so - couldn't that ...
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13
votes
3
answers
64k
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How to check if my multimeter's fuse is damaged?
I recently bought a cheap multimeter. I played around measuring stuff on simple circuits and I think I managed to damage it as I don't seem to be able to measure current anymore (always get zero ...
- 243
11
votes
5
answers
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What parts would one typically use for automated PCB testing?
I have a circuit board in production, primarily through-hole, to the tune of ~400 units per year. Each one is manually inspected and tested. The board has ten distinct voltage rails, four voltage ...
- 17.6k
10
votes
1
answer
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Verowire woes - how to reliably solder it?
I'm using Verowire (wiring pencil, Road Runner, you name it) quite often to contact test points on my board to make them accessible for measurements (oscilloscope probe, multimeter clamp ...)
Image ...
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9
votes
3
answers
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SMD Crystal solder(?) problem and any recommended test procedure
I use a 32.768 kHz SMD crystal (datasheet) for a MCU. Here is the layout part of the crystal.
Here is a view from an actual PCB
I mounted the components by hand-soldering, and produced about 30 ...
- 3,305
8
votes
2
answers
2k
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How do you identify Pin 1 based off these pictures? [closed]
This is a test question in a study book about electronics. I cannot find the answer and have no idea which picture identifies a pin.
Am I missing something? Any help on the right answer along with ...
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