Rohde & Schwarz RTP Series - Page 538

Protocol analysis
R&S
®
RTP
538User Manual 1337.9952.02 ─ 12
SS, MISO, MOSI
Configures the Slave Select, MISO and MOSI lines.
Source ← SS, MISO, MOSI
Sets the input channel of the selected line.
Usually, the source is one of the analog channels. Reference and math waveforms are
available as source if the trigger source is one of the analog channels but not the serial
bus.
Do not combine a reference waveform with channel or math waveform because the
time correlation of these waveforms might differ.
Alternatively, digital channels can be used if MSO option R&S RTP-B1 is installed. Dig-
ital and analog channels cannot be used at the same time.
For triggering on a serial bus, analog or digital channel sources are required.
Remote command:
BUS<m>:SPI:SSELect:SOURce on page 1587
BUS<m>:SPI:MISO:SOURce on page 1588
BUS<m>:SPI:MOSI:SOURce on page 1589
Polarity ← SS, MISO, MOSI
Selects whether transmitted data or the slave select signal is high active (high = 1) or
low active (low = 1).
Remote command:
BUS<m>:SPI:SSELect:POLarity on page 1588
BUS<m>:SPI:MISO:POLarity on page 1588
BUS<m>:SPI:MOSI:POLarity on page 1589
Set Thresholds
Opens a dialog, where you can set the tresholds for digitization of signals for each line.
If the signal value on the line is higher than the threshold, the signal state is high. Oth-
erwise, the signal state is considered low if the signal value is below the threshold. The
interpretation of HIGH and LOW is defined by the Polarity.
SPI bus (option R&S RTP-K1)