2 Quick Start

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2.1 Capturing traffic

The general flow for capturing traffic with any Beagle analyzer is the same, whether it be the USB 480, USB 12, or I2C/SPI analyzers with the following caveats.

When monitoring USB, it is best to attach the Beagle analyzer’s analysis port and start the capture before the attaching target device port. This allows the Beagle Analyzer to capture the descriptor information that is communicated at device connection.

For all other protocols, the capture can be started before or during the presence of traffic on the target bus. If traffic is already present on the bus, the first packet may appear corrupted or incomplete since the Beagle analyzer may start monitoring traffic midway into a transmission.

These are the basic steps for capturing data with a Beagle analyzer. For more detailed information, please refer to the specific sections in this manual.

1. Install the Beagle analyzer USB driver and Total Phase Data Center software.

2. Plug in the Beagle analyzer into the analysis computer.

3. Attach the Beagle analyzer to the bus under test. (For USB, do not attach the target device until the capture been started. The target host port, however, can be connected now.)

4. Launch the Data Center application.

5. Click the (Connect to Analyzer) button in the toolbar and connect to an available Beagle analyzer.

6. Click on the (Device Settings) button in the toolbar and make sure the correct capture protocol is selected in the pull-down list. Set any other device settings as appropriate.

7. Click on the (Capture Settings) button in the toolbar. Set the capture settings as appropriate.

8. Ensure the Protocol Lens is set to the appropriate protocol (I2C, SPI, or USB).

9. Click the (Run Capture) button in the toolbar to start the capture.

10. For USB, connect the target device to the Beagle USB 12/480 analyzer. Some spurious events may appear. There is no need to be alarmed since these events correspond to electrical noise created during the physical connection event.

11. As traffic is seen on the bus, it will be displayed in real-time in the Transaction window.

The capture can be stopped at any time by clicking the (Stop) button. The captured data can be filtered during or after the capture. The captured data or a filtered view can be saved as a binary *.tdc file for future analysis.