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Questions tagged [production-testing]

Production Testing is sometimes called in-line testing. That is the PCB or assembly is completed but is only a sub-assembly. There can be many sub-assemblies to get to the final product. In-line testing is used to make sure sub-assemblies are fully functional per engineering standards, then sent to the stock room to be issued for the next assembly level. This procedure assures but does NOT guarantee that the final product will pass final testing.

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In Circuit Tester design

I wanted to create an ICT to check for shorts and validate some of the voltage levels on a PCB that I created, using a jig. I have placed probe points on the desired nets and will be using pogo pins ...
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1answer
47 views

How to connect to tiny pogo pins in test fixture?

I'd need to build a test fixture with very small pogo pins (1.27 mm spacing between the closest pins). I've seen fixtures before that use very long, very thin pogo pins almost exactly like this one ...
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2answers
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Is my simple atmega2560 based product exempt from EMC testing?

I have designed a product that is essentially a USB HID device for a computer game. It consists of several on off switches and 5v servos run by an atmega2560, all sealed and enclosed in a plastic case....
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2answers
932 views

Test pad's ESD protection

I design a module with onboard test-pads. I put ESD protections to all out-world connections like sockets etc. But I want to ask that; should I put ESD protections to test-pads and ISP socket inputs?...
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60 views

Circuit testbench nailbed: how to test the pots?

Imagine I make an analog circuit, lets say a guitar pedal circuit (in a PCB of course). How can I test (automatically if possible) the potentiometers functionality, when testing in a nailbed ...
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1answer
37 views

Term for pcb test fixture that can access both sides of the board

What is a good term for a pcb test fixture setup having, say, pogo pins that can reach lands on both sides of a device? Could it be dual-side or double-sided?
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2answers
390 views

How to test a CPU watchdog on board?

The watchdog of an ATMEL ATXMega128 should have been enabled with fuses. It triggers a reset, if the timer was not reset within the configured time span. I want to be sure, that it is enabled and ...
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3answers
82 views

Compliance Testing Strategies

How do people / companies deal with compliance testing (CE, UL, FCC, etc.) what I would call "platform-oriented and modular" products? The idea being that a family of products might exist, where a ...
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1answer
248 views

logic level conversions for opto-isolators in digital input acquisition

This isn't my usual job, I'm not an EE, but I want to give it shot... This question concerns developing an interface board to connect a device (DUT) to a test system in a manufacturing scenario. ...
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2answers
154 views

How to write or generate test cases(or vectors) for automated production testing of embedded electronics?

My question is following: Assuming I have developed some embedded controller(board) which has some tens of digital inputs and outputs. It has embedded firmware, which performs some logical functions. ...
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0answers
279 views

Mass Production: Espressif prodution programming, serial and tests

I am hitting the production phase of my project very soon and the production programming part is still blurry. I am using the ESP32 Wroom-32 module, and it seems like no professional module has yet ...
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1answer
123 views

CE certification

One of the required CE test technical files is "Test Reports". This document has to be provided to the test agency. Does anyone know what data should be included in this document? Here are the ...
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1answer
28 views

Fault modelling stuck at fault for combinational circuit

A circuit has n inputs and n outputs. It is implemented only using AND, OR and NOT gates. Further, there are no fan-out branches. What is the number of s-a faults that remain after fault collapsing? ...
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1answer
99 views

Low volume mixed signal electronics production (hardware test, calibration, flashing) automation [closed]

I am designing a mixed-signal board with microcontroller that will need flash memory programming for its firmware, (self-)testing, and documentation for the final production steps. I know there is a ...
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5answers
2k views

GPS QA during manufacturing

Testing and integration engineers on electronics.stackexchange How do you quality check if a GPS module and its subsystems are up to the mark during manufacturing? ...
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2answers
1k views

HIPOT testing and Y capacitors

The electric strength test OR dielectric withstand test OR HIPOT test voltage level as specified in EN 60730 standard works out to be 2860VAC for a class II radio product I am developing. The PCB has ...
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1answer
154 views

I cant seem to figure out FCC or any testing for that matter

this website has a wealth of information and after browsing for quite a while I cant seem to answer my question. I am interested in selling an LED PCB light in the US. It operates on 24v1amp DC ...
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1answer
120 views

How do professional companies test a low power wireless network performance?

I have designed a 5 point low power wireless network using 868 MHz modules and want to test the wireless connection performance indoor. The points are going to be fixed to the wall and placed above ...
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1answer
204 views

RF Switch or Splitter to test multiple DUT

The task is to test multiple DUT's (sequentially) for Transmitter & Receiver testing in multiple unlicensed frequency bands supported by the DUT. I could connect a single RF Signal Generator to 2 ...
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0answers
39 views

Insuring primary batteries are fresh

I am about to go into production with a CR2450 battery powered product that is designed to be in service for 10+ years. What is the best non-destructive way during production to verify the batteries ...
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2answers
2k views

Temporary PCB connections for testing

I want to be able to perform tests on assembled PCBs with a custom tool. the test would take seconds, and would be done manually by connecting a cable between the tool and PCB. My question is what ...
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3answers
5k views

Testing VOH, VOL, VIH, VIL

How would someone test Vih, Vil of an input pin (Or VoH, VoL of output pin) of a SoC. With an inverter, you could easily see the results but with a microcontroller/SoC, it seems difficult without the ...
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3answers
868 views

PCB in circuit tester design

Imagine you want to produce 1k pcs of hardware(mixed signal) per month and you would like to have tester in order to load firmware, calibrate sensors etc. How do you approach that problem? I see many ...
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1answer
232 views

RF generator TX antenna with low impedance can damage generator?

I got an RF generator R&S HAMEG HM8135 that I use in a testsystem to generate FM and AM stimuli in order to check if FM antenna and AM antenna is correctly mounted on the testobject in a ...
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3answers
3k views

EMC testing vs. EMI testing

What is the difference between EMC testing (Electromagnetic compatibility) and EMI testing (Electromagnetic interference)
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1answer
179 views

ethernet socket interface throught nail bed

I need to make a test nail bed for a board that has an Ethernet interface: in the bottom of the board there is access to the socket ethernet pins i could place test nails under the ethernet socket to ...
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1answer
94 views

Where can I find some basic information about ICT? [closed]

I'm trying to find some information about the basics of ICT (In Circuit Testing) but having trouble finding anything useful. From the few things I managed to find, I gather that an ICT tester is a ...
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1answer
142 views

Controlling the number of devices manufactured by a licensed manufacturer

Problem A small company is trying to outsource manufacturing to a small 3rd party factory. The products are consumer grade electronic devices and do not require any special certification besides CE ...
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2answers
857 views

What hole size for test probe to get a snug fit?

I’m designing a bed of nails test jig. I want my test probes to fit snugly in the circuit board, but want to allow for variation in the through hole plating of the hole. In Altium, when you specify ...
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1answer
62 views

How to quantify testability

Alright, I was wondering how this is currently done in the industry. Usually, when we produce some hardware, we have a few testing options available (Automatic Optical Inspection, Flying Probe, In-...
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1answer
351 views

CPU and Memory Burn-in during production

I am looking to implement some burn-in to exercise the cpu, memory, and flash of our assembly during production. What is used in the mass production world to burn in these components before any high ...
2
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2answers
235 views

How to prevent or detect counterfeit parts from distributors and manufacturers?

I am brand new to EE/ECE. My understanding is that, with distributors, you do pay a premium on the parts you order from them, but bundled with that premium is some kind of protection against ...
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4answers
232 views

How to test analog component before mounting?

I have been in a small factory today, they produced 4 kind of PCBs that all are simple analog boards, each month they produce 1000 of them. The problem is that till now, after mounting them almost 10% ...
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1answer
153 views

Optimizing product tests?

I'm currently working for a company where I design and implement an automated test program to test our products. Currently our tests take quite a bit of time (several minutes per unit) and need to ...
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2answers
261 views

How to evaluate normative requirements for a new device/design?

I realize that this may be "opinion based" but I would like some general advice and feedback anyway and it is a engineering question after all. I often feel overwhelmed by the sheer amount of ...
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7answers
2k views

How come product makers tend to make their own boards rather than putting together modules?

It seems that most, if not all, companies that produce mass market goods use custom boards rather than putting together modules that are already available in the general market. For instance, battery ...
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1answer
444 views

ZIF socket with 0.1" row spacing

I am looking for a Zero Insertion Force (ZIF) socket with 0.1" between the two rows. The socket is to accept a DIP header like this: So one side of the header would go into the ZIF socket, the other ...
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1answer
639 views

Fuse: testing on PCB

I have a slow-blow 3A, 1.2A2s (I2t), 32V SMT fuse [1206 package] in my design. The power is supplied by the 12V battery in a car. Questions: How can I verify that the fuse would protect my circuit - ...
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1answer
512 views

What is the IEC 60617 schematic symbol for jumper and test point?

What is the IEC 60617 schematic symbol for jumper and test point? I have tried to find it in the official standards but it seems not to be defined explicitly.
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1answer
916 views

Pogo Pins for 1.5mm Pitch Test Fixture

I'm working on a design and am going to source a smaller pcb and solder it to my design. Before using the sourced board I'm wanting to test it and so I'm trying to design a test fixture similar in ...
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2answers
825 views

PCB Panelization tool/SW and adding test connections

I prepared 4 different PCB layouts on Eagle CAD and generated Gerber files. As I can see Eagle CAD doesn't have any option to panelization. Is there any free tool/program that can allow me to ...
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2answers
1k views

Electrical Connectors - To Split Pin or Not To Split Pin, That is The Question

I'm working on repairing a swimming pool hot tub heater. Feed is 240v 1Ph A/C power and it uses 18 gauge wire throughout. Apparently something got wet and I can see signs of a thermal event within ...
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1answer
256 views

What are the typical qualification norms for assembly line workers? [closed]

My question seems OFF-TOPIC, but I do believe there might be people here(at electronics_stackEx) who know the answer. And I really don't know a better place to post this. Here Goes the question: What ...
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3answers
1k views

What Regulatory Requirements are Really Necessary for Sale in the USA?

I understand that unless you fall into some specific product categories that are exempt from FCC regulations, electronic products sold in the US are legally required to meet FCC EMC limits. However, ...
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2answers
305 views

Checking for a short in a circuit with a large capacitor?

I'm developing a small testing application for my company that tests various hardware and software functionality. I do however have a problem developing a simple way to check for short circuits in ...
5
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3answers
10k views

AMD/Intel CPU Yield/Failure Rate

This question is based on another question submitted here: Is it possible to make illegal clones of an Intel Core i7? More specifically, it's based around this quote: I've been led to believe it's ...
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5answers
6k views

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 ...
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3answers
644 views

How to design contact pins for testing SMD board? Only optical inspection possible testing technique?

The point 6.56 and the Teensy's testing are examples about testing, also the pictures below. Now suppose you want to do a SMD board to the size of fingerprint or smaller. The earlier video mentioned ...
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2answers
2k views

Low volume PCB assembly testing

I've ordered fabrication and assembly of small PCB batches (~100) a couple of times already. Each time, the assembly factory asked me if I wanted to do testing on the boards. Since I'm not a ...
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1answer
144 views

Embedded board level functional test at factory

My embedded project has a GSM and a GPS module. What is the best way to test the radios of these modules after the production of CCA like in a factory conditions.I was thinking of signal generators ...