The audio market for wireless Bluetooth headsets is growing rapidly. People have gotten used to wireless audio systems, and the mobile phone industry is pushing towards a world without audio connectors and cables. Most of the average users who think about Bluetooth audio picture clumsy over-ear headsets with very little...
Published: Nov 01, 2018
A VCXO is a crystal oscillator where its output frequency changes in direct proportion to the application of an input control voltage. There are many names given or assigned to this output frequency being changed with the control voltage, which can be confusing.
Absolute Pulling Range (APR) has become a very...
Published: Jul 25, 2018
Rail voltages are getting smaller, and tolerances are decreasing. As a result, making accurate power rail measurements has become much more difficult.
Industry dynamics are driving both a decrease in rail voltage values as well as tighter tolerances across a wide range of rails. Making an accurate ripple measurement...
Published: Jun 04, 2020
Today, R&D engineers face challenging time-to-market goals. Extending the product development schedule and delaying the product launch can prove to be extremely costly in terms of opportunity cost and lost market share. Nearly 50% of products fail EMC compliance the first time.
Every day spent on debugging, isolating...
Published: Jun 04, 2020
Most organizations do not consider production test a top priority, but it is a necessity to prevent major quality issues in the products that represent the company brand in the hands of customers.The costs, however, can be significant and are often greatly misunderstood, especially when there’s no...
Published: Feb 19, 2020
Safety, availability, and cost considerations can make performing thorough tests of embedded control devices
using the complete system impractical.
Hardware-in-the-loop (HIL) simulation is a real-time test technique used to test these devices more efficiently.
During HIL test, the physical system that interfaces...
Published: May 01, 2019
As advanced driver assistance systems (ADAS) introduce
new technology into vehicles, they need adaptable, futureproof test systems. NI offers a single, software-defined platform approach to automotive test that can natively integrate all the I/O types you need to test today’s and tomorrow’s ADAS technology....
Published: Jun 05, 2019
ECUs became a standard component in most vehicles. As a computer designed to solve a very specific problem, the ECU is a fundamental component in an automobile. Modern vehicles can contain over 100 ECUs with many different purposes.
This white paper explores different approaches to test automotive electronic control...
Published: Feb 19, 2020
To investigate the stability of a switched-mode power supply, a Bode plot created with an oscilloscope is ideal for checking the critical phase margin and gain margin values. The factors that determine how satisfactory the results from Bode plot measurements will be, need to taken into consideration as part of the preparation....
Published: Jun 04, 2020
Safety, availability, and cost considerations can make performing thorough tests of embedded control devices using the complete system impractical. Hardware-in-the-loop (HIL) simulation is a real-time test technique used to test these devices more efficiently. During HIL test, the physical system that interfaces...
Published: Feb 19, 2020
Standard industrial interfaces such as RS-485 and RS-232 are commonly used for unidirectional and bidirectional data transfer in a range of applications that encompass everything from medical monitoring to test and measurement equipment.
This paper presents the reasons for galvanic isolation in board designs that...
Published: Jul 23, 2018
To ensure the stability of voltage regulators and switchedmode power supplies, the control loop behavior must be measured and characterized. A well compensating voltage controller enables stable output voltages and reduces the influence of load changes and supply voltage variations. The quality of this control circuit...
Published: Jun 04, 2020
Modern vehicles can contain over 100 ECUs controlling everything from the drivetrain to the ADAS systems. Each ECU needs to be tested individually as well as in conjunction with other components.
This white paper discusses the five main tester design challenges and five common approaches to ECU production test to...
Published: Nov 04, 2019
Feed-forward headsets typically are more easily developed because the design engineer usually does not have to deal with stability issues. A major drawback of this topology, however, is wind noise, since the ANC microphones are directly exposed to the ambient. An alternative that overcomes this drawback is the use of a...
Published: Nov 01, 2018