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Applications & Articles

Quality Assurance in the Development and Production of Consumer Electronics.

Quality assurance in consumer electronics is more complex than ever: stable power supplies are crucial for device reliability, while increasing interference from the power grid raises the demands on testing. In this article, you will learn how oscilloscope-based measurement solutions, automated test software, and realistic AC disturbance simulations can be used to precisely validate critical device parameters. We demonstrate, in practical terms, how failure risks can be identified at an early stage and how tests can be performed efficiently – from signal acquisition to documentation. Read on to discover how you can professionally optimize your test processes.

Considering Interference Factors.

Electrical devices typically contain a switched-mode power supply (SMPS) that converts AC to DC. From smartphones to notebooks, from LED lamps to washing machines – switching power supplies are found in almost every device. At the same time, disturbances originating from the power grid are increasing, for example due to voltage fluctuations caused by renewable energy sources or the widespread use of energy-saving lamps. Fault-prone SMPS can shorten the service life of end devices.

Thorough validation of these switching power supplies as part of quality assurance helps prevent device failures. The oscilloscope-based reference solution presented here enables the measurement of all performance-relevant parameters such as current, voltage, harmonics, transients, and power-on/off characteristics. The AC laboratory power source allows interference effects to be simulated for realistic operating conditions. Test execution can be easily automated using LabVIEW software.

Ensuring Operational Reliability.

The later a device fault is detected during development or production, the more costly it usually is to correct. To avoid worst-case scenarios such as system failures or product recalls, product defects should therefore be identified as early as possible.


5 Key Questions
for Quality Assurance


 

Does the device under test (DUT) comply with the defined specifications?

 

Are the relevant EU directives and EN standards for electromagnetic compatibility (EMC) fulfilled?

 

How do the devices perform under real operating conditions, particularly in interaction with other components?

 

How can devices and components be tested efficiently and in compliance with applicable standards?

 

How can the required documentation and recording obligations be met?

Automated Validation Test with AC Disturbance Simulation.

(Chart only in German)

Diagramm: Automatisierter Validierungstest mit AC-Störsimulation

Reference Solution for Validation Tests in Quality Assurance and Development.

Verification of a power supply unit (= DUT) for consumer electronics is performed here using an RTM3000 Series oscilloscope from Rohde & Schwarz, together with suitable voltage probes (e.g. RT-ZHD16, RT-ZP05S) and current probes (e.g. RT-ZC03). The measurement procedure can be automated using NI LabVIEW Professional, which simplifies test execution and ensures consistent measurement results. The software controls both the oscilloscope for measurement and the AC power source, such as the ASR-2100 from GW Instek, which supplies the DUT and simulates electrical disturbances. The measurement results can be evaluated directly in LabVIEW.

Graphical Programming Environment
for Automated Test Systems.

With LabVIEW, test engineers can rapidly develop automated validation and production test systems. Device configurations and measurement results are visualized, and errors can be corrected interactively. LabVIEW simplifies the development of data analysis routines and the integration of measurement hardware from any manufacturer.

  • Acquisition of hardware data from NI and third-party devices and communication via industry-standard protocols
  • Interactive user interfaces for test control and monitoring
  • Standard mathematical, probabilistic, and statistical functions

Product Recommendation.

Skip product gallery
RTM3004
Rohde&Schwarz
RTM3004
Oscilloscope basic unit, 4 channels, touch display, USB, LAN, 100 MHz (opt. up to 1GHz), 5 GSa/s, 10 bit, 40MPts (1335.8794.04)
€5,130.00
Delivery time upon request
RT-ZHD16
Rohde&Schwarz
RT-ZHD16
Probe, active, differential 50: 1/500: 1, 200MHz, ± 1,500V, R&S Interface (1800.2207.02)
€2,880.00
Delivery time upon request
RT-ZP05S
Rohde&Schwarz
RT-ZP05S
Probe, passive, 10: 1, 500 MHz, 300V, 1.3m, BNC Readout (1333.2401.02)
€215.00
Delivery time upon request
RT-ZC03
Rohde&Schwarz
RT-ZC03
Current clamp, BNC, 20A rms DC - 100 kHz, 0.1V / A (1333.0844.02)
€1,000.00
Delivery time upon request
784584-35
NI
784584-35
LabVIEW Professional Development System, Windows, All Languages, Subscription License
€3,020.00
Ready to ship in 5 to 10 business days
ASR-2100
GW Instek
ASR-2100
Power supply unit, AC & DC, with mains interference simulation 350 V / 10 A, 999 Hz, 1000 VA, USB / LAN, Ext.
-15 % €2,684.30 €3,158.00
Delivery time upon request

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