Tektronix DPO4032, User Manual, Page: 136 / 359

Acquire the Signal
1. If you select I2C , push De fi ne Inputs and the
appropriate side-bezel menu choices.
B1
I2C
De fi ne
Inputs
Thresholds Include
R/W in
Address
No
B1 Label
I2C
Bus Display Event Table
You can assign the prede fi ned SCLK Input or
SDA Input to the channel connected to the
signal.
2. Push Include R/W in Address and then push
the desired side-bezel button.
This control determines how the oscilloscope
shows the I
2
C addresses in bus decode traces,
cursor readouts, Event Table listings, and
trigger settings.
If you select Yes , the oscilloscope displays 7-bit addresses as eight bits, where 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 protocol, 10 bit I
2
C addresses are preceded by the fi ve bit code, 11110. The oscilloscope does
not include these fi ve bits in address readouts.
110 MSO4000 and DPO4000 Series Oscilloscopes User Manual