Just curious what I should expect when I connect the Tsunami to a USB port before trying to even use the Arduino IDE. I connected it to my Mac Mini and a device assignment is done. The terminal program I use recognizes the Tsunami as a device but I wonder it I try to open the device with the terminal program can I expect any serial port output when the default program runs? If so, what baud rate do I need to set in the terminal emulator?

Where can I find the code for the program that I assume must be in the board when it is received?

I connected to mine with a terminal at either 57600 or 115200 and there was a test program that reported. If you connect input BNC to output BNC with a cable, the self tests should pass (or on occasion fail by a small margin sometimes I think).

My system was Linux, but I bet it'd be similar on your Mac.

Great, I will try those two rates, I just did not want to be guessing starting at 9600 baud and going up. I assumed there had to be something active on the port. I will try that later. Thanks.

I've found:
115200 - works great.
57600 - doesn't always complete the test.

System: Ubuntu 15.04 (64-bit)
Running at the terminal: sudo screen /dev/ttyACM0 115200