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UART Trigger
This part shows a brief introduction and description for the operation of the UART
trigger.
1. Press Setup key to enter the TRIGGER function menu.
2. Press Type and select Serial.
3. Press Protocol and select UART.
4. Press Trigger Setting softkey to enter UART TRIG SET menu.
Figure 49 UART TRIG SET Menu
5. Press the Source Type softkey to select the source of trigger (RX or TX).
6. Press the Condition softkey and set up the desired trigger condition:
Start — The oscilloscope will be triggered at the position of the start bit.
Stop —The oscilloscope will be triggered at the position of the stop bit.
Data — The oscilloscope will be triggered when a byte which is equal to
(greater or less than) the specified data is identified.
a. Press the Compare Type softkey and choose an equality qualifier (>, <
or =).
b. Press the Value softkey to set data’s value. The data value range is
from 0x00 to 0xff.
Error — If the parity check has been set, and the parity bit check is an error,
the oscilloscope will be triggered.
Figure 50 UART Trigger
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