Remote control commands
R&S
®
RTA4000
630User Manual 1335.7898.02 ─ 08
BUS<b>:UART:RX:SOURce <Source>
BUS<b>:UART:DATA:SOURce <Source>
Selects the input channel of the data line.
Suffix:
<b>
.
1..4
Parameters:
<Source> CH1 | CH2 | CH3 | CH4 | D0..D15
CH3 and CH4 are only available with 4-channel R&S RTA4000
oscilloscopes.
*RST: CH1
BUS<b>:UART:TX:SOURce <Source>
Selects the input channel of the transmitter TX line.
Suffix:
<b>
.
1 | 3. Bus 2 or 4 is not available if the TX source is used on bus
1 or 3, respectively.
Parameters:
<TxSource> CH1 | CH2 | CH3 | CH4 | NONE | D0..D15
NONE
Disables the optional TX line.
*RST: NONE
BUS<b>:UART:POLarity <IdleState>
Defines the logic levels of the bus. The idle state corresponds to a logic 1, and the start
bit to a logic 0. If both RX and TX lines are used, the setting affects both lines.
Alternative command for BUS<b>:UART:DATA:POLarity
Suffix:
<b>
.
1..4
Parameters:
<IdleState> IDLLow | IDLHigh
IDLLow: idle low, low = 1
IDLHigh: idle high, high = 1
*RST: IDLH
BUS<b>:UART:DATA:POLarity <Polarity>
Defines if the transmitted data on the bus is high (high = 1) or low (low = 1) active. If
both RX and TX lines are used, the setting affects both lines.
Alternative command for BUS<b>:UART:POLarity .
Serial bus analysis
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