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When you modify the threshold of the clock channel, a dotted line displaying the
current threshold level is displayed on the screen. It disappears in about 2 s after
you stop modifying the threshold.
Set the data channel source and the threshold
• Click or tap the drop-down button of SDA to select the desired source of the
data channel (CH1-CH4).
• Click or tap the input field of SDA Thre, and then use the pop-up numeric
keypad to set the threshold of the data channel. You can also use the
corresponding multipurpose knob to set the value.
Exchange sources
Select "SCL/SDA" or "SDA/SCL" in Exchange to exchange the sources of the current
clock channel and data channel.
Specify whether the address information includes the "R/W" bit
For I2C bus, each frame of data starts with the address information (read address and
write address).
Select "Without" or "With" in R/W to decide whether the address information
includes the "R/W" bit. When "With" is selected, the "R/W" bit will be included in the
address information; when "Without" is selected, the "R/W" bit will not be included
in the address information.
15.3.2 Display-related Settings
In Decode menu, set the following display-related parameters.
Set the Display Format
Click or tap the drop-down button of Format to select the display format of the bus
data and event table. The available options include "Hex", "Dec", "Bin", and "ASCII".
Set the Label Display
Click or tap the Label on/off switch to enable or disable the label display of the
decoding bus. When enabled, the bus label will be displayed at the upper-left side of
the bus (when the bus display is enabled). The label shows the current bus type.
15.3.3 Event Table
Open or Close the Event Table
Click or tap the Event Table on/off switch to enable or disable the display of the
event table. When enabled, the event table is displayed as shown in the figure below.
You can also click or tap the icon at the upper-right corner of the table to close
the event table.
Protocol Decoding
DHO4000 User Guide
204
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
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