4.Advanced User Guidebook
45
Data Bits
Set the data width of each frame to match the signal.
It can be set to 5, 6, 7 or 8.
Parity
Set the even-odd check mode
to match the polarity
used by the signal.
Display
Format
Binary
Decimal
Hex
ASCII
Set the display format of the bus.
Event
Table
ON
OFF
Select "ON" to display the event table.
Save
Event
Table
If a USB storage device is currently connected to the
instrument, save the event table data
in a .csv
(spreadsheet) formatted file on the external USB
storage device.
ASCII
Table
ON
OFF
Select "ON" to display the ASCII table.
2. I2C Decoding
To decode I2C signal:
(1) Connect the
clock line (SCLK) and the data line (SDA) of the I2C signal to
the Signal Input Channels of the oscilloscope.
(2) Adjust to the proper time base and voltage division.
(3) In trigger menu, select Bus trigger, and select bus type as I2C, set
parameters based on the characteristics of the signal,
trigger the signal
correctly and obtain stable display. Refer to "
(4) Click
to call up the menu panel. Click the
Decode
softkey on panel to
switch to the ON state. Select bus type as I2C. set parameters based on
the characteristics of the signal. When the parameters are set correctly,
the information carried by the signal will be displayed.
Tip:
If there are repetitive menu items in both trigger menu and decoding menu,
you can set anyone of them, the other will be changed synchronously.
Decoded information interpretation:
Information
Abbreviation
Background
Read Address
R, Read, or do not display
Green
Write Address
W, Write, or do not display
Green
Data
D, Data, or do not display
Black
Note
:
Use the upper knob to adjust the thresholds of bus trigger and bus
decoding.
When the ACK (ACKnowledge Character) is not met, two red error marks
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