Protocol Analysis
R&S
®
Scope Rider RTH
199User Manual 1326.1578.02 ─ 12
Predefined Bit Rates, Bit Rate
Set the number of transmitted bits per second.
You can select a predefined value in the "Predefined Bit Rates" list, or set a user-
defined value in "Bit Rate".
Remote command:
BUS:UART:STDBitrate on page 445
BUS:UART:BITRate on page 446
Data Bits
Sets the number of data bits in a word (symbol) in a range from 5 bits to 9 bits.
Remote command:
BUS:UART:SSIZe on page 446
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.
Remote command:
BUS:UART:PARity on page 446
Stop Bits
Sets the number of stop bits: 1 or 1.5 or 2 stop bits are possible.
Remote command:
BUS:UART:SBIT on page 446
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.
Remote command:
BUS:UART:ORDer on page 446
Frame Mode
Allows you to decode frames of several words in the data stream, which are defined by
a timeout between a stop bit and the next start bit. Enter the minimum timeout between
two frames in "Idle Time".
Remote command:
BUS:UART:FRAMemode on page 447
BUS:UART:TOUT on page 447
9.4.3 UART Trigger Settings
Access: "Bus" menu > "Bus Protocol" = "UART" > "Trigger"
UART/RS-232/RS-422/RS-485 (Option R&S
RTH-K2)
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