RIGOL Chapter 8 Protocol Decoding
8-22 MSO4000/DS4000 User’s Guide
Set the CS signal
Press Channel and turn the multi-function knob to select D0 to
D15 or CH1 to CH4.
When an analog channel (CH1 to CH4) is selected, you can press
Threshold and turn the multi-function knob to adjust the
threshold (the default is 0 V) of the CS channel. Pressing the
multi-function knob
can quickly reset the threshold of the channel
to 0 V.
When modifying the threshold of the CS channel, a dotted line
displaying the current threshold level is displayed on the screen (in the
same color as the channel). It disappears in about 2 s after you stop
modifying the threshold.
Set the level polarity
Press Polarity to set the polarity of the chip select channel to
(positive polarity) or
(negative polarity).
4. Set the clock signal (SCLK)
Press SCLK to enter the SCLK (clock line) setting submenu. In this submenu,
1) Specify the clock channel
Select the desired clock channel and set its threshold (only when an analog
channel (CH1 to CH4) is selected) by referring to step 3 “Set the CS
signal”.
2) Specify the edge type
Press Slope to set the instrument to sample the data channel(s) (MISO
and/or MOSI) on the rising edge (
) or falling edge ( ) of the clock
signal.
5. Set the MISO and MOSI data signals
Press MISO and MOSI to enter the MISO and MOSI data line setting submenus
respectively. Please select the desired data channel as well as set its threshold
(only when an analog channel (CH1 to CH4) is selected) and the level polarity in
the corresponding menu by referring to step
3 “CS”. When “None” is selected,
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