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7. Error Expressions in Decoding
In RS232 decoding, parity error and/or EOF (end of frame) error may occur.
- Parity error
When a parity error is detected during the decoding, red error report
information will be displayed. For example, when "none" is chosen for the parity
on the transmitter and "odd" is chosen for the parity on the decoder, the
following parity error information (its display form is related to the value of
the horizontal time base) occurs, as shown in the figure below. Wherein, the
number of 1s in the 8-digit figure (01001111, LSB) is an odd number, and the
parity bit should be 0. However, the parity bit detected on the Tx is 1; thus a
parity error occurs.
- EOF error
This error is generated when the EOF condition is not met. For example, if the
Stop Bit is set to 1.5, but the actual stop bits is less than 1.5 bits, then the red
error report information (its display form is related to the value of the
horizontal time base) is displayed in the following figure.
Protocol Decoding
242
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