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Serial Bus Analysis
R&S
®
RTB2000
190User Manual 1333.1611.02 ─ 03
UART configuration settings
Figure 12-16: UART setup dialog
Source.........................................................................................................................190
Polarity........................................................................................................................ 190
Threshold, Find Threshold.......................................................................................... 190
Parity...........................................................................................................................191
Stop Bits......................................................................................................................191
Bit Rate....................................................................................................................... 191
Data Size.....................................................................................................................191
Idle Time..................................................................................................................... 191
Source
Selects the input channel of the UART line. This can be the receive line (Rx), the trans-
mit line (Tx), or of the data line if only one data line is used.
If the MSO option R&S RTB-B1 is installed, you can use logic channels as source.
Remote command:
BUS<b>:UART:DATA:SOURce on page 395
Polarity
Selects if the transmitted data is high active (high = 1) or low active (low = 1).
High active is used, for example, for control signals, while low active is defined for data
lines (RS-232).
Remote command:
BUS<b>:UART:DATA:POLarity on page 396
BUS<b>:UART:POLarity on page 395
Threshold, Find Threshold
Set the signal threshold for the source channel. Enter a value, or use "Find Threshold"
to set the threshold to the middle reference level of the measured amplitude.
For analog channels, you can find the value also in the "Vertical" menu > "Chan-
nel <n>" >"Threshold"
For logic channels, you can find the value also in the "Logic" menu > "Threshold".
UART / RS232 (Option R&S RTB-K2)
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