Quick Reference 2
Keysight InfiniiVision 1000 X-Series Oscilloscopes User's Guide 77
UART/RS232 Decode/Trigger
On all 1000 X-Series oscilloscopes, the UART/RS232 serial decode and triggering
option can be enabled with the EMBD license.
When interpreting the decode waveforms, see the Mode softkey built-in help.
Table 28 SPI Decode/Trigger Features
Feature Front Panel Key/Softkey Location (see built-in help for more information)
SPI signal setup After selecting the Serial Bus and the SPI serial bus mode, press [Bus] > Signals > to open the SPI
Signals menu. In this menu, there are separate softkeys and submenus for specifying the Clock,
MOSI/MISO, and CS (chip select) signal oscilloscope source channels and threshold voltages.
NOTE: The 2-channel DSOX1000-Series oscilloscopes support 3-wire SPI. The MOSI and MISO
signal settings are forced to be the same; essentially, you can probe one or the other.
The Display Info softkey lets you display or hide signal setup and timing diagram information.
SPI framing
[Bus] > Signals > CS > Frame by, Entry knob (~CS - Not Chip Select, CS - Chip Select, Clock
Timeout)
SPI word size [Bus] > Word Size
SPI bit order [Bus] > Bit Order (MSB, LSB)
SPI trigger [Trigger] > Trigger Type, Serial 1 (SPI)
[Trigger] > Trigger Setup > Trigger Type (Master-Out, Slave-In (MOSI) Data)
The additional softkeys let you specify the number of data bits and the value of each bit.
Table 29 UART/RS232 Decode/Trigger Features
Feature Front Panel Key/Softkey Location (see built-in help for more information)
UART/RS232 signal
setup
After selecting the Serial Bus and the UART/RS232 serial bus mode, press [Bus] > Signals > to open
the UART Signals menu. In this menu, you can select the oscilloscope source channels probing the
Rx and Tx signals and the appropriate threshold voltage for each.
UART/RS232 bus
configuration
After selecting the Serial Bus and the UART/RS232 serial bus mode, press [Bus] > Bus Config > to
open the UART Bus Config menu. In this menu, you can select the oscilloscope source channels
probing the Rx and Tx signals and the appropriate threshold voltage for each.
UART/RS232 number
of bits
[Bus] > Bus Config > # Bits, Entry knob (5, 6, 7, 8, 9)
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