4.Advanced User Guidebook
58
Data
D, Data, or do not display
Black
Note
:
⚫
Use the
Trigger Level
knob to adjust the thresholds of bus trigger and bus
decoding.
⚫
When the ACK (ACKnowledge Character) is not met, two red error marks will be
displayed in the corresponding position in the waveform.
I2C Decoding menu
list:
MENU
SETTING INSTRUCTION
Bus Type
I2C
Set bus type of decoding as I2C.
Display
Format
Binary
Decimal
Hex
ASCII
Set the display format of the bus.
EventTable
ON
OFF
Select "ON" to display the event table.
Save
EventTable
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.
3.
SPI Decoding
To decode SPI signal:
(1)
Connect the
clock line (SCLK) and the data line (SDA) of the SPI 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 SPI, set parameters
based on the characteristics of the signal, trigger the signal correctly and obtain
stable display. Refer to "
(4)
Push the
Decode
button on the front panel. Select bus type as SPI. 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.
Note
:
⚫
Use the
Trigger Level
knob to adjust the thresholds of bus trigger and bus
decoding.
⚫
LS First
in Bit Order menu item (Least Significant Bit First) means that the least
significant bit will arrive first: hence e.g. the hexadecimal number 0x12, will
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