Serial Trigger and Decode
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7.3.2 UART Trigger
This section includes an introduction and description for the operation of the UART trigger.
1. Touch
Setup
key to enter the
TRIGGER
function menu.
2. Touch
Type
and select
Serial
.
3. Touch
Protocol
and select
UART
.
4. Touch
Trigger Setting
to enter
UART TRIG SET
menu.
Figure 7.19
UART Trig Set Menu
5. Touch
Source Type
to select the source of trigger (RX or TX).
6. Touch
Condition
and set up the desired trigger condition:
•
Start
— the oscilloscope will be triggered at the position of start bit.
•
Stop
—the oscilloscope will be triggered at the position of stop bits.
•
Data
— the oscilloscope will be triggered when found a byte which is equal to (greater or less than) the specified
data.
a. Touch
Compare Type
and choose an equality qualifier (>, < or =).
b. Touch
Value
to set data’s value. Data’s value is in range of 0x00 to 0xff.
•
ERROR
— if the parity check has been set, and the bit of parity check is error, the oscilloscope will be triggered.
Figure 7.20
UART Trigger
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