User Manual
stable display. Refer to "SPI Trigger" on page 52.
(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 rotary control 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
arrive as the sequence 01001000 in binary representation, will be decoded as the
reversed sequence 00010010.
SPI Decoding menu list:
Set bus type of decoding as SPI.
Select the clock edge to match the signal, sample the
SDA data on the rising or falling edge of the clock.
Set the minimum time that the clock (SCL) signal must
be idle before the oscilloscope starts to search for the data
(SDA) on which to trigger. The range is 30 ns to 10 s.
Set the data width of each frame to match the signal. It
can be set to any integer between 4 and 32.
Select LS First or MS First to match the signal.
Set the display format of the bus.
Select "ON" to display the 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.
Select "ON" to display the ASCII table.
To Next Page
Loading...
Need help?
General
