Acquire the Signal
1. If you select I2C,pushDefine Inputs and t he
appropriate side-bezel menu choices.
B1
I2C
Define
Inputs
Thresholds Include
R/W in
Address
No
B1 Label
I2C
Bus Display Event Table
You can assign the predefined SCL K Input or
SDA Input to the channel connected to th e
signal.
2. Push Inc lude R/W in Address and then push
the desired side-bezel button.
This control determ ines how the oscilloscope
shows the I
2
C addresses in bus d ecode traces,
cursor readouts, Event Tab le listings, and
trigger settings.
If you select Yes, the oscilloscope displays 7-bit a ddresses as eight bits, w here the eighth bit (LSB) is the R/W bit. It displays
10-bit addresses as 11 bits where the third bit is the R/W bit.
If you select No, the oscilloscope displays 7-bit addresses as seven bits, and 10-bit addresses as ten bits.
In the physical layer of the I
2
C proto col, 10 bit I
2
C ad dresses are preceded by the five bit c ode, 11110. The oscillos cope does
not include these five bits in address readouts.
110 MSO4000 and DPO4000 Series Oscilloscopes User Manual
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