Technical data

80 4000 X-Series Oscilloscopes Advanced Training Guide
4 Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
Lab #15: Decoding, Triggering, and Searching on I
2
C Serial Bus Signals
In this lab you will learn how to set up the scope to decode and trigger on
I
2
C serial bus traffic. In addition, you will learn how to use the scope’s
automatic I
2
C Search & Navigation capability, as well as use Segmented
Memory acquisition to capture multiple and consecutive occurrences of a
particular Read operation. This lab does not provide a tutorial on the I
2
C
protocol and signaling. To complete this lab, your scope must be licensed
with the I
2
C trigger and decode option (Option EMBD). You can verify the
installed options on your oscilloscope at [Help] > About Oscilloscope.
1 Connect the channel-1 probe to the Demo 1 terminal and ground.
2 Connect the channel-2 probe to the Demo 2 terminal and ground.
3 Press [Default Setup] on the scope’s front panel.
4 Press [Help]; then tap the Training Signals softkey.
5 Select and enable the I
2
C signal.
6 Set channel- 1 to 1.00 V/div.
7 Press the [2] front panel key to turn on channel- 2.
8 Set channel- 2 to 1.00 V/div.
9 Set channel- 2’s offset/position to +3.50 V.
10 Push the trigger level knob to set the trigger level to approximately 50%.
11 Set the scope’s timebase to 500.0 µs/div.