YOKOGAWA DL1640

1-11
IM 701610-61E
1
I
2
C-Bus Signal Analysis Function
• I2C on Pattern
This setting is used when activating the trigger based on the SCL/SDA signal and
CH3/CH4 pattern. The trigger is activated only when the I
2
C bus trigger condition is
met while the CH3/CH4 trigger condition is met.
CH3=L, CH4=H
891 189
I
2
C bus condition met
Condition not met
Trigger does not activate
SDA
SCL
CH3
CH4
I
2
C bus condition met
..........
.....
.....
Condition met
Trigger activated here
.....
Setting the CH3 and CH4 Pattern
H: The trigger source level is above the preset trigger level.
L: The trigger source level is below the preset trigger level.
X: Not used as the trigger source.
Setting the Trigger Condition
True: Activates a trigger when the specified CH3/CH4 pattern is met.
False: Activates a trigger when the specified CH3/CH4 pattern is no longer met.
• I2C → Pattern
This setting is used when activating the trigger based on the SCL/SDA signal and a
preset CH3/CH4 pattern. The SCL/SDA trigger met condition is held until the CH3/
CH4 trigger condition is met.
CH3=L, CH4=H, Enter
891 189
SDA
SCL
CH3
CH4
I
2
C bus condition met
.....
Condition met
Trigger activated here
Condition not met
Trigger does not activate
Holds the I
2
C bus
trigger met condition
.......... .....
.....
1.3 Setting the Trigger Conditions