Rohde & Schwarz RTE Series - Configuring I²C Protocol

Protocol analysis
R&S
®
RTE
525User Manual 1326.1032.02 ─ 20
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 RTE-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>:I2C:SDA:SOURce on page 1426
BUS<m>:I2C:SCL:SOURce on page 1426
R/W bit
Defines if the R/W bit is considered separately or as part of the address. The setting
affects the Adress Type of the trigger conditions.
Remote command:
BUS<m>:I2C:RWBit on page 1428
Threshold
Sets the threshold value for digitization of signals for each line. If the signal value on
the line is higher than the threshold, the signal state is high (1 or true for the Boolean
logic). Otherwise, the signal state is considered low (0 or false) if the signal value is
below the threshold.
There are several ways to set the threshold:
●
"Threshold"
Enter the value directly in the field.
●
"Full autoset"
Starts software algorithms for determining the signal threshold levels and bitrate.
●
"Auto thresholds"
Executes the measurement of reference levels and sets the thresholds to the mid-
dle reference level of the measured amplitude.
●
"Preset thresholds"
Selects the default threshold voltage for various signal technologies from a list. The
value is set to "Manual" if the threshold was set with "Auto threshold", or was
entered directly.
Note: If the sources are digital channels, the same threshold values are used for the
parallel and the serial buses. You can set the thresholds either in the parallel bus con-
figuration or in the serial bus configuration.
Remote command:
BUS<m>:I2C:SCL:THReshold on page 1427
BUS<m>:I2C:SDA:THReshold on page 1427
BUS<m>:I2C:TECHnology on page 1427
BUS<m>:SETReflevels on page 1421
BUS<m>:FAUToset on page 1421
13.2.2.2 Configuring I²C protocol
The configuration of the I²C is simple - assign the two lines to input channels, and set
the thresholds.
I²C (option R&S
RTE-K1)