Protocol analysis
R&S
®
RTP
524User Manual 1337.9952.02 ─ 12
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>:I2C:SDA:SOURce on page 1554
BUS<m>:I2C:SCL:SOURce on page 1554
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 1556
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.
●
"Autoset"
Starts software algorithms for determining the signal threshold levels and bitrate.
●
"Find thresholds"
Executes the measurement of reference levels and sets the thresholds to the mid-
dle reference level of the measured amplitude.
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 1555
BUS<m>:I2C:SDA:THReshold on page 1555
BUS<m>:I2C:TECHnology on page 1555
BUS<m>:SETReflevels on page 1548
BUS<m>:FAUToset on page 1549
Show thresholds
If enabled, the threshold levels are displayed in the diagram.
Remote command:
BUS<m>:THReshold on page 1549
13.2.2.2 Display settings
Access: [Protocol] > "Display" tab.
For common display settings, see Chapter 13.1.3, "Display", on page 514.
I²C (option R&S
RTP-K1)
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