User Manual

Protocol Analysis
R&S
®
Scope Rider RTH
183User Manual 1326.1578.02 ─ 08
Remote command:
BUS:UART:POLarity on page 394
Threshold, Technology, Find Level
Sets the threshold value for digitization of signals. If the signal value is higher than the
threshold, the signal state is high. Otherwise, the signal state is considered low. The
interpretation of high and low is defined by the Polarity.
You can select the threshold voltages for various types of integrated circuits in the
"Technology" list, or set a user-defined value in "Threshold". You can also let the
instrument set the appropriate threshold using "Find Level".
Changing the thresholds in the bus configuration changes also the thresholds of ana-
log channels in the "Vertical" menu, or the thresholds of logic channels in the "Logic"
menu.
Remote command:
BUS:UART:TECHnology on page 394
BUS:UART:THReshold on page 394
BUS:SETReflevels on page 376
CHANnel<m>:THReshold:FINDlevel on page 257
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 394
BUS:UART:BITRate on page 395
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 395
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 395
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 395
UART/RS-232/RS-422/RS-485 (Option R&S
RTH-K2)