User manual

Protocol Analysis
R&S
®
RTO
281User Manual 1316.0827.02 ─ 06
Bit order
Defines if a word starts with msb (most significant bit) or lsb (least significant bit). The
display of the decoded signal considers this setting, results are displayed in the specified
order.
Stop bits
Sets the number of stop bits: 1 or 1.5 or 2 stop bits are possible.
SCPI command:
BUS<m>:UART:SBIT on page 679
Parity
Defines the optional parity bit that is used for error detection.
"None"
No parity bit is used.
"Odd"
The parity bit is set to "1" if the number of data bits set to "1" is even.
"Even"
The parity bit is set to "1" if the number of data bits set to "1" is odd.
"Mark"
The parity bit is always a logic 1.
"Space"
The parity bit is always a logic 0.
"Don't care"
The parity is ignored.
SCPI command:
BUS<m>:UART:PARity on page 678
Packets
Allows to define packets of several words in the data stream.
"None"
Packets are not considered.
"End word"
Defines a pattern as end condition of a packet, for example, a reserved
word like CR or LF. The bit pattern editor provides frequently used val-
ues in the "Predefined values" list below the pattern table.
A new packet starts with the first start bit after the defined end pattern.
"Timeout"
Defines a timeout between a stop bit and the next start bit. Enter the
minimum time that marks the end of a packet.
A new packet starts with the first start bit after the timeout.
SCPI command:
BUS<m>:UART:BITime on page 678
UART / RS232