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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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How to measure gigaohm resistors?

I've got an issue that appears to be caused by damaged resistors that are either open circuited or of too low a value due to contamination. The problem is that they're gigaohm resistors, so to a ...
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2answers
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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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3answers
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Production testing, design-for-test, test points, and other techniques

I have been working with some board layouts that include a test point for every net on the circuit (or close to it). This lead me to a search for other topics about test points and general design-for-...
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2answers
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How do you determine if a new microcontroller is defective?

I've never dealt with parts being defective strait from digikey, but 3 new Atmel ATmega164A's that I've received have been exhibiting extremely odd behaviour. I narrowed it down to something to do ...
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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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6answers
1k views

Boundary scan developer and testing tools

I have to choose a tool for production testing of fairly dense PCB's with 4+ FPGAs 10+ DSPs, ethernet controllers and PCI controllers.. Does anyone have any experience with any of the tools available ...
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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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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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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
826 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 ...
6
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3answers
881 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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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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5answers
2k views

How do we test reliability and quality so as to minimize the risk of board failure in the field?

We are developing a smart cable for a customer. The market potential is hundreds of thousands of units. The vendor who designs and supplies the boards (with firmware) that will be built into the ...
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2answers
2k views

Testing an FTDI chip

I have an FTDI chip (reference manual here) that translates USB from a PC to an SPI channel connected to an FPGA. I would like to test that the communication path between the PC and the FPGA is ...
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3answers
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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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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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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 ...
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2answers
2k views

Electronic product test plan/scripts…how to go about writing them?

I'm testing an electronics toy product. Any advice on writing test plans and test scripts. I'm thinking along the lines of listing user actions: for normal input/response that are suppose to cause ...
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4answers
1k views

How to use Arduino board to automate testing

ok here goes, Iam trying to build a device to test nurse call room controllers, these are basically 8 port boards with rs485 linking (have software for this, what i need to do is test these, to do ...
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1answer
121 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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2answers
160 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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2answers
958 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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3answers
645 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

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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2answers
871 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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3answers
83 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
3k views

Test automation framework/software for hardware applications

I am an Electrical engineer so my background on software testing is limited. My application is not a software testing issue. I need to develop a software package in python to interact with a RF ...
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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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2answers
436 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 ...
3
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1answer
257 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. ...
2
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1answer
50 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
236 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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votes
2answers
227 views

What to look in a desktop/small DC Power Supply?

I'm looking for the most adequate power supply that can go between ~0-30v and ~0-5A. These are going to be used for software development for automotive infotainment systems and the operation specs for ...
2
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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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1answer
100 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 ...
2
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1answer
233 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 ...
2
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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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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
922 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 ...
2
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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 ...
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4answers
233 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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vote
1answer
183 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
2k views

Testing the integrity of SRAM

I am testing a board that has external SRAM. Apparently the SRAM is relatively sensitive to the soldering heat from the manufacturing process, and so careful testing must be done to check integrity of ...
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vote
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
356 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 ...
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2answers
1k views

how to use a spectrum analyzer?

This is a new topic to me so it would be great if someone could give me a few pointers. I have an amplifier that I would like to get the frequency response for and a spectrum analyser with Probes A, ...
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2answers
943 views

How to make a voltage testing circuit

I want to make a very cheap tester that I could use on cables that are used in the field at my company. We usually use multimeters but not everyone knows how to use one. It would basically be like a ...
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1answer
206 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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1answer
528 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
926 views

Testing plan for flat flexible cable (FFC) connector

I'm taking an assembly of three boards to a small production run. There's a main board (n=25) and a satellite sensor board (n=100). The sensor board connects to an adapter board, which simply ...