Blog Entries
Tractor: First Look
Tractor is a framework for driving automated testing. The first focus is on amplifier testing using both the QA401 Audio Analyzer and the QA450 Programmable Load. These 3 applications work...
Tractor: First Look
Tractor is a framework for driving automated testing. The first focus is on amplifier testing using both the QA401 Audio Analyzer and the QA450 Programmable Load. These 3 applications work...
QA450 Programmable 8/4 Ohm Load
If you are designing and shipping high-powered amps and looking for an economical testing solution, we are putting the pieces in place to deliver what you need. Combined with our...
QA450 Programmable 8/4 Ohm Load
If you are designing and shipping high-powered amps and looking for an economical testing solution, we are putting the pieces in place to deliver what you need. Combined with our...
QA350 gets True RMS
The QA350 thus far has been a high-resolution DC volt meter, with a bandwidth of 1.1 Hz (slow sampling) or 441 Hz (fast sampling). Release 1.70 changes that, and adds...
QA350 gets True RMS
The QA350 thus far has been a high-resolution DC volt meter, with a bandwidth of 1.1 Hz (slow sampling) or 441 Hz (fast sampling). Release 1.70 changes that, and adds...
A CMOS Pre-Amp for Hi-Z sources
A few posts back we took a look at the challenges of measuring high-Z sources with audio analyzers than have a bi-polar based front-end. The big trade off, of course, is...
A CMOS Pre-Amp for Hi-Z sources
A few posts back we took a look at the challenges of measuring high-Z sources with audio analyzers than have a bi-polar based front-end. The big trade off, of course, is...
User Weighting and RIAA
A new feature in release 1.6 allows you to specify an arbitrary user weighting to the displayed data. This came as a request from those that are using calibrated microphones...
User Weighting and RIAA
A new feature in release 1.6 allows you to specify an arbitrary user weighting to the displayed data. This came as a request from those that are using calibrated microphones...
Input Current Noise Density
One of the new features in the QA401 1.6 release is the ability to display noise density. A user was curious why the noise density calculations couldn't be verified using...
Input Current Noise Density
One of the new features in the QA401 1.6 release is the ability to display noise density. A user was curious why the noise density calculations couldn't be verified using...