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Chapter 5 To Trigger the Oscilloscope RIGOL
DS8000-R User Guide 5-35
of SCL clock position.
âš« Address: the trigger searches for the specified address value. When this event
occurs, the oscilloscope will trigger on the read/write bit. After this trigger
condition is selected:
➢ Click AddrBits to select the desired address bits. The available address bits
are "7 Bits", "8 Bits", and "10 Bits".
➢ Click Address, then use the numeric keypad or scroll with the mouse to set
the address of I2C trigger.
➢ Click More → Direction to select "Write", "Read", or "R/W".
Note: This setting is not available when AddrBits is set to "8 Bits".
âš« Data: the trigger searches for the specified data value on the data line (SDA).
When this event occurs, the oscilloscope will trigger on the clock line (SCL)
transition edge of the last bit of data. After this trigger condition is selected:
➢ Click Bit X, then scroll with the mouse to select data bit that needs to be
operated on. Then set the current bit. As shown in the figure below, the left
is its binary format, and the right is its corresponding Hex format.
Then set it with the pop-up virtual keypad. For setting methods, refer to
descriptions in "Pattern Trigger". If you modify the binary data bit, a
virtual keypad as shown in Figure 5-15 (a) is displayed. If you modify the
hex data bit, a virtual keypad as shown in Figure 5-15 (b) is displayed.
(a) Virtual Keypad for Binary Data Bit (b) Virtual Keypad for Hex Data Bit
Figure 5-15 Virtual Keypad for Data Bit Settings
➢ Click Bytes, then use the pop-up numeric keypad or scroll with the mouse
to set the length of the data. Its range is from 1 to 5.
➢ Click More → Addr Bits to select the desired address bits. The available
address bits are "7 Bits", "8 Bits", and "10 Bits".
âš« A & D: the oscilloscope searches for the specified address and data at the same
time, then triggers when both the address and data meet the conditions. After
this trigger condition is selected, you need to set Bit X, Bytes, Addr Bits,
Address, and Direction menu items. For setting methods, refer to descriptions
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