Test Equipment
The Saleae Logic logic analyzer is illustrated in Figure 1.14. This device
provides a simple 8-channel logic analyzer capable of capturing digital data at
10-20 MHz which is sufficiently fast to debug the basic serial protocols utilized
by these tutorials. While the hardware itself is quite simple – even primitive
– the software provided is very sophisticated. Most importantly, it has the
capability of analyzing several communication protocols and displaying the
resulting data in a meaningful manner. Figure 1.15 demonstrates the display
of serial data – in this case “hello world” (you may need to zoom in your pdf
viewer to see the details).