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In the trigger control area (Trigger) on the front panel, press to quickly switch
the current trigger mode. For details, refer to descriptions in "
Trigger Mode
".
Trigger Parameter Setting:
Sets the trigger parameter (noise rejection) under this trigger type. For details, refer
to descriptions in "
Noise Rejection
".
Trigger LEVEL/Threshold Level:
Rotate the Trigger LEVEL knob to adjust the trigger level/ threshold level. Please
refer to descriptions in "
Trigger LEVEL/Threshold Level
". The current trigger level/
threshold level is displayed at the upper-right corner of the screen.
8.7.14 I2C Trigger (Option)
I2C is a 2-wire serial bus used to connect the microcontroller and its peripheral
device. It is a bus standard widely used in the microelectronic communication control
field.
The I2C serial bus consists of SCL and SDA. Its transmission rate is determined by SCL,
and its transmission data is determined by SDA, as shown in the figure below. This
series oscilloscope triggers on the start condition, restart, stop, missing
acknowledgment, specific device address, or data value. Besides, it can also trigger on
the specific device address and data values at the same time.
Figure 8.14 Schematic Diagram of I2C Protocol
Trigger Type:
Press Type, and then rotate the multifunction knob to select "I2C". Press down the
knob to select the trigger type. Then, the current trigger setting information is
displayed at the upper-right corner of the screen, as shown in the figure below. You
can also press
Type continuously or enable the touch screen to select it.
Source Selection:
To Trigger the Oscilloscope
112
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