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RIGOL Chapter 11 Protocol Decoding
11-12 DS8000-R User Guide
I2C Decoding (Option)
I2C serial bus consists of the clock line (SCL) and the data line (SDA).
SCL: samples SDA on the rising or falling edge of the clock.
SDA: indicates the data channel.
SCL
SDA
Figure 11-5 I2C Serial Bus
In the decode setting menu, click Decode1 → Bus Type to select "I2C".
1
． Enable or disable the bus
Click Bus Status continuously to enable or disable the decoding function.
2
． Quickly apply I2C trigger settings to I2C decoding
Click Copy Trig to copy the clock signal and data signal settings (SCL and SDA)
of the current I2C trigger settings and apply them to I2C decoding function (SCL
and SDA).
3
． Source setting
Click Sources to enter the source setting menu.
âš« Set the clock channel source and the threshold
➢ Click SCL to select the desired source of the clock channel. The
available channels include CH1-CH4.
➢ Click SCL Thre, then use the pop-up numeric keypad or scroll with the
mouse to adjust the threshold of the clock channel. After modifying the
threshold of the clock channel, a dotted line displaying the current
threshold level is displayed on the screen. The dotted line disappears in
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