User Manual

SIGLENT
User Manual 95
UART/RS232 Triggering
This part will provide 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 52 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 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. Press the Compare Type softkey and choose an equality qualifier (>, < or =).
b. Press the Value softkey 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.