What Are the Principles of the HEO and VEO Measurements with the Advanced Cable Tester?

Question from the Customer:

I need to test cables that are in development. Before I get started, I have some questions about the Advanced Cable Tester:

  1. How does the Advanced Cable Tester obtain the HEO and VEO measurements of the eye diagram? What test principles are used?
  2. What are the units of HEO & VEO? When I use an oscilloscope to view an ...

How Do I Implement I2C Master Register Read with the Aardvark I2C/SPI Host Adapter?

Question from the Customer:

I am using the Aardvark I2C/SPI Host Adapter with Aardvark Software API via Python and I need to communicate with registers. I noticed that the Python API supports functions aa_i2c_write and aa_i2c_read, which perform I2C Master write and I2C Master read respectively.  Is there an API function to perform I2C Master ...

How Can I View and Analyze USB Traffic for a Composite High Speed Device?

Question from the Customer: I’m using the Beagle USB 12 Protocol Analyzer and I haven’t been able to view the USB traffic for a composite device: an HID keyboard and an Audio device connected to the USB hub. What do I need to look into? Do I need to make any changes to this setup? Response from Technical Support: Thanks for your questions! ...

How Can I Best Use a Protocol Analyzer in a USB Port Production Environment to Record USB Data Transfer Speed?

Question from the Customer:

I’m developing an automated system for the production environment of automotive products. I’m looking at the Beagle USB 480 Protocol Analyzer – how could I use this device to read and record data transfer speed at the USB ports.

Response from Technical Support:

Thanks for your question!  The Beagle USB 480 Pro...

How Do I Enable the A2B Bus Monitor to Monitor Audio Signals?

Question from the Customer:

I am using the A2B Bus Monitor and I can see the I2C transactions during “discovery”, which indicates the monitor is up running and monitoring the A2B bus. However, the audio output is not visible.  How do I configure the A2B Master to enable monitoring the audio output?

Response from Technical Support:

Thanks f...

What are the Dangers of Manufacturing and Using Untested USB Cables?

Not all cables are manufactured up to standard, even if designed to.

The dangers of untested USB cables have become a concerning topic in the tech industry in recent years. What used to be simpler cable designs have migrated to become much more complex to keep up with the high demands of new, advanced devices. Cables today operate at much faster speeds, provide exponentially more power, and include additional f...

How Can I Best Verify MOSI/MISO SPI Data Traffic Using the Aardvark I2C/SPI Host Adapter?

Question from the Customer:

I am using the API functions to control the Aardvark I2C/SPI Host Adapter in SPI mode. To loop the MOSI/MISO, can I use only one Aardvark adapter or do I need two Aardvark adapters?

Response from Technical Support:

Thanks for your question! To test the traffic as you described, you will need two Aardvark adapters. On...

How Do I Acquire and View Audio Details with the Data Captured by the A2B Bus Monitor Using Python Scripts?

Question from the Customer:

I am using the Promira Serial Platform with the A2B Bus Monitor – Level 1 Application. I have questions about using the A2B API software.

  1. Does it contain information about Level (dBFS) and Frequency (Hz) in the uncompressed PCM file from audio_capture.py, promira.py?
  2. ​Where can I find information for the command...

How Do I Identify which I2C Host Adapter is Connected to which Port using LabVIEW?

Question from the Customer:

 I have two Aardvark I2C/SPI Host Adapters connected to my PC that are used in parallel. I am using LabVIEW. How do I determine which Aardvark adapter is connected to which port? As shown below, the ports are not differentiated.  How can I get the port information per Aardvark adapter?

View of Computer Devices

Response from Technical Supp...

How Can I Accelerate Results when Using Rapid Triggers to Read I2C Data?

Question from the Customer:

In our characterization lab we are using an Aardvark I2C/SPI Host Adapter as one of our I2C adapters. I’m currently working on a development project where I need to repeatedly read I2C data  after a trigger via GPIO pin at a rate of 400kHz.

The current implementation uses the Aardvark API Software and USB communic...