We've run out of cases, and since we UV print the case artwork on demand, this means nothing can ship until new cases arrive. They are in the air, and should be arriving via FedEx later this week. Orders can be placed, but cannot ship until the cases have arrived. Sorry for the delay.

Release 1.726 Graph Types

The graphing plug-ins have been re-named and re-organized for 1.726. This post will highlight the types of graphs than can be created. Until the documentation is updated, this post will hopefully help you re-home your compass. 

The naming of the plug-in has been changed to indicate better indicate what the plug-in does. The plug-in menu drop-down now appears as follows:

There is a prefix to each plug-in:

AMP: This plug-in will deal in dBV both in and out, and is useful for testing amplifiers when you aren't concerned about the power. For example, a pre-amp or individual op-amp circuit would make sense for this plug-in.

DAC: This plug-in will express output as dBFS, and will require that Mirror mode is enabled in the QA401 application. 

PWR: This plug-in is designed for measuring power amps. Output levels will be expressed in dBV, and input levels will be converted to watts. This requires you to specify a load. 

SPKR: This plug-in is designed for measuring speakers. 

AMP: Frequency Response

The options dialog appears as follows:

The output appears as follows:

AMP: Gain and Distortion versus Amplitude

The options appear as follows:

The output appears as follows. The left Y axis shows the gain of the DUT, and the right Y axis shows the distortion of the DUT, with the option to plot 2H and 3H levels separately. 

AMP: THD(N) versus Frequency

The options appears as follows:

The output appears as follows:

 AMP: THD Versus Output Level

The options appear as below:

The output appears as below. For this graph, the same measurement at several different FFT sizes was made.

DAC: Noise and Distortion versus Output Level

The options appears as follows:

The output appears as follows:

DAC: Output Impedance versus Frequency

The options appears as follows:

The output appears as follows:

DAC: THD(N) versus Output Level

The options are as follows:

The output is as follows:

 PWR: IMD versus Output Power

The options are as follows:

The output is as follows:

Pwr: Output Impedance versus Frequency

The options are as follows:

The output is as follows:

Pwr: THD versus Output Power

The options are as follows:

The output appears as follows:

Spkr: Speaker Impedance

The options appear as follows:

The output appears as follows: