Digital Storage Oscilloscope 39
Trigger condition:
Trigger Condition: Press
When
softkey to select the desired trigger condition.
• Start: trigger when SDA data transitions from high level to low level while SCL is
high level.
• Stop: trigger when SDA data transitions from low level to high level while SCL is
high level.
• MissedACK: trigger when the SDA data is high level during any acknowledgement
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:
• --The AddrBits is "7 bits"; --so the range can be from 0 to 0x7F.
• Restart: trigger when another start condition occurs before a stop condition.
• 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:
--press
Data
softkey to select the desired data bit;
Data Index: Set the data index, the range is from 0 to 3.
Note: When DataMask is ON, the setting data is invalid.
Trigger Level:
5. When select SCL channel, press SCL and use TRIGGER LEVEL knob to modify the
trigger level of the SCL channel. When select SDA channel, use TRIGGER LEVEL
knob to modify the trigger level of the SDA channel.
