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Press SCL and SDA to specify the sources of SCL and SDA respectively. They can be
set to CH1-CH4 or D0-D15. For details, refer to descriptions in "
Trigger Source
". The
current trigger source is displayed at the upper-right corner of the screen.
NOTE
Only when we select the channel (that has been input with signals) as the trigger source, can
we obtain a stable trigger.
Trigger Condition:
Press When, then rotate the multifunction knob to select the the desired trigger
condition. Press down the knob to select it. You can also press When continuously or
enable the touch screen to select it.
• Start: triggers when SDA data transitions from high level to low level while SCL is
high level.
• Stop: triggers when SDA data transitions from low level to high level while SCL is
high level.
• Restart: triggers when another start condition occurs before a stop condition.
• MissedAck: triggers when the SDA data is high level during any
acknowledgment of SCL clock position.
• 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:
- Press AddrBits, then rotate the multifunction knob to select the desired
address bits, and then press down the knob to select it. You can also press
AddrBits continuously or enable the touch screen to select it. The available
address bits are "7 Bits", "8 Bits", and "10 Bits".
- Press Address, then rotate the multifunction knob or use the pop-up
numeric keypad to set the address of I2C trigger.
- Press More > Direction to select "Read", "Write" or "R/W".
NOTE
This setting is not available when
AddrBits is set to "8 Bits".
To Trigger the Oscilloscope
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