Keysight DSOX1202A, Руководство пользователя

Страница: 286 / 330

286 Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide
26
I2C Triggering and Serial Decode
6 Press the Signals softkey to open the I
2
C Signals menu.
7 For both the SCL (serial clock) and SDA (serial data) signals:
a Connect an oscilloscope channel to the signal in the
device under test.
b Press the SCL or SDA softkey; then, turn the Entry knob to
select the channel for the signal.
c Press the corresponding Threshold softkey; then, turn the
Entry knob to select the signal threshold voltage level.
The threshold voltage level is used in decoding, and it will
become the trigger level when the trigger type is set to
the selected serial decode slot.
Data must be stable during the whole high clock cycle or it
will be interpreted as a start or stop condition (data
transitioning while the clock is high).
The SCL and SDA labels for the source channels are
automatically set.
I2C Triggering
To set up the oscilloscope to capture I2C signals, see "Setup for I2C Signals" on
page 285.
After the oscilloscope has been set up to capture I2C signals, you can trigger on a
stop/start condition, a restart, a missing acknowledge, an EEPROM data read, or
on a read/write frame with a specific device address and data value.
1 Press [Trigger] .
2 In the Trigger menu, press the Trigger Type softkey.