UART/RS232 Triggering and Serial Decode
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Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide
315
You can set the UART baud rate from 1.2 kb/s to 10.0000 Mb/s in
increments of 100 b/s.
d Polarity
— Select idle low or idle high to match your device under test's state
when at idle. For RS232 select idle low.
e Bit Order
— Select whether the most significant bit (MSB) or the least
significant bit (LSB) is presented after the start bit in the signal from your
device under test. For RS232 select LSB.
UART/RS232 Triggering
To set up the oscilloscope to capture UART/RS-232 signals, see
To trigger on a UART (Universal Asynchronous Receiver/Transmitter) signal
connect the oscilloscope to the Rx and Tx lines and set up a trigger condition.
RS232 (Recommended Standard 232) is one example of a UART protocol.
1
Press
[Trigger]
.
2
In the Trigger menu, press the
Trigger Type
softkey.
NOTE
In the serial decode display, the most significant bit is always displayed on the left regardless
of how Bit Order is set.
