Technical data

Verifying RS-232/UART Serial Bus Communication 8
Agilent InfiniiVision 7000B Series Oscilloscopes Evaluation Guide 45
With default labels turned on, we can now clearly see which input
signals are the transmit (TX) and receive (RX) signals, and which serial
decode trace is the transmit decode (TX) and the receive decode (RX). In
addition, we should see that the oscilloscope is triggering on 4D hex of
the transmit signal at exactly center-screen. Note that in addition to
decoding and triggering on hex formatted data, the InfiniiVision Series
oscilloscopes are also able to decode and trigger on binary and ASCII
formatted data. Let’s change the decode base from the default hex
setting to ASCII and see if we can uncover a secret encoded message
generated by the demo board’s signals.
14 Press [Serial]; then, press Settings.
15 Press Base; then, select ASCII.