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C-Bus Signal Analysis Function
Setting the Address Trigger
When the trigger type is set to “ADRS,” a trigger can be activated when the combination
of the following three trigger conditions is met.
• Address Pattern: Set the 7-bit address and the R/W bit. A trigger is activated when
the 7-bit address and the R/W bit matches the specified pattern.
• Data Pattern:
Set an 8-bit data pattern. When the position is set to “First Byte,”
compares to the byte immediately following the address and
activates a trigger on a match. When the position is set to
“Anywhere,” seaches until a match is found.
The trigger conditions can be specified using binary or hexadecimal values.
Determines whether the data matches the specified conditions in the following order:
“Address Pattern,” and “Data Pattern.” When all conditions are met, a trigger is
activated.
For the combination of settings, see section 1.4, “Trigger Setting Examples.”
Note
If there is at least one “X” bit in a group of four bits in the binary display, the corresponding
hexadecimal display will show an “X.”
• Setting the Data Pattern Condition
Select the condition from the following. The condition can be specified on Data1
Pattern and Data2 Pattern, separately.
• True: Activates a trigger when the specified pattern is met.
• False: Activates a trigger when the specified pattern is not met.
• Setting the Data Pattern Posotion
You can select the location of the byte data for comparison with the data pattern.
• First Byte: Compares with the first byte after the address.
• Anywhere: Compares bytes after the address until a match is found.
• Setting Whether to Ignore Restart Conditions
You can select whether to ignore the restart condition that occurs after starting the
trigger detection upon detecting the Start condition.
• Yes:
Ignores the restart condition and continues with the trigger detection.
• No:
Restarts the trigger detection when a restart condition is detected.
• Setting Whether to Ignore Start/Stop Conditions That Do Not Conform to the
Protocol
You can select whether or not to ignore the start or stop condition that occurs in the
middle of the address or data bit while detecting the trigger.
• Yes: Ignores the start/stop condition and continues with the trigger detection.
• No:
Restarts or stops the trigger detection when a start/stop condition is
detected.
SDA
SCL
Start condition
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Start condition that does not
conform to the protocol
Ignore : Continues the trigger detection.
Not ignore : Restart or stop the trigger detection.
1.3 Setting the Trigger Conditions
