15 UART/RS232 Triggering and Serial Decode
338 InfiniiVision 7000B Series Oscilloscopes User’s Guide
UART/RS232 Serial Decode
To set up the oscilloscope to capture UART/RS232 signals, see “Setup for
UART/RS232 Signals” on page 334.
To set up UART/RS232 serial decode:
1 Press [Serial]; then, select the UART/RS232 serial decode mode.
2 Press Settings.
3 In the UART/RS232 Settings Menu, press the Base softkey to select the
base (hex, binary, or ASCII) in which decoded words are displayed.
• When displaying words in ASCII, the 7- bit ASCII format is used.
Valid ASCII characters are between 0x00 and 0x7F. To display in
ASCII you must select at least 7 bits in the Bus Configuration. If
ASCII is selected and the data exceeds 0x7F, the data is displayed in
hex.
• When #Bits is set to 9 in the UART/RS232 Bus Configuration Menu,
the 9th (alert) bit is displayed directly to the left of the ASCII value
(which is derived from the lower 8 bits).
4 Optional: Press the Framing softkey and select a value. In the decode
display the chosen value will be displayed in light blue. However, if a
parity error occurs the data will be displayed in red.
Because of oscilloscope hardware resource limitations, you cannot decode UART/RS232
data while CAN, LIN, or FlexRay triggering is selected.
For UART/RS232 triggering setup see “UART/RS232 Triggering” on page 335.
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