142
Idle Level: Select if the idle level between transmissions is LOW or HIGH.
Data Length: Set the number of bits in the UART/RS232 words to match your device
under test (selectable from 5 to 8 bits).
UART Serial Decode
To set up UART serial decode:
1.
Press the Decode button to display the DECODE menu.
Figure 118 - UART/RS232 DECODE menu
2. Press the Display softkey and choose On to display the decode line on the display.
3. Press the List softkey to enter the LIST menu.
4. Press the Display softkey and choose On to display the decode list on the display.
5. Press the Scroll softkey and the Lines softkey to set the position of the cursor and the line
number of the list with the Universal Knob. The range of Lines is from 1 to 7.
Figure 119 - UART decode example
Interpreting UART/RS232 Decode
Active waveforms show an active bus (inside a packet/frame).
Mid-level blue lines show an idle bus.
Mid-level red lines show that the idle level is wrong.
The decoded data is displayed in white.
