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IM DLM3054-01EN
Data
You can use a data pattern as a trigger condition.
• Data Length (Size)
Set how many consecutive data bytes will be compared.
Selectable range: 1 to 4 bytes
• Comparison Start Position (Position)
Set the comparison start position. The instrument skips the specified number of bytes and starts comparing
from the next data byte. If you do not set the comparison start point, the data trigger condition is met when
the input signal data pattern first matches the specified data pattern.
Selectable range: 0 to 9999 bytes
• Comparison Condition (Condition)
The data trigger condition is met when the relationship between the specified pattern and the input signal
pattern meets the specified comparison condition.
True When the patterns match
False When the patterns do not match
• Data Pattern (Hex/Bin)
Set the data pattern for the specified data size in hexadecimal (Hex) or binary (Bin) notation.
• R/W Bit Inclusion (Include R/W)
Select whether to include or omit the R/W bit when you set the address pattern.
• ON: Include the R/W bit (address + R/W bit: hexadecimal or binary)
• OFF: Omit the R/W bit (address: hexadecimal or binary, R/W bit: set with Direction)
You can set R/W bit inclusion (Include R/W) under the conditions listed below. The setting is universal.
• When the I
2
C bus trigger type is Address Data.
• When the I
2
C bus signal is being analyzed or searched.
Example (Address Data)
This example displays the data sequence at the byte level (hexadecimal notation) and indicates the trigger
position. The following notations are used in the figure.
S: Start condition, P: Stop condition, Shading: Compared pattern
• Trigger only on the address pattern
Mode Address Date
Address 7bit address, A4
Data Don’t care
S
25 AE 57
27 FE
98 99 27 PA4
Address + R/W bit
Matches the specified address pattern. Triggers here.
4 Triggering
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