Aegis OSC-9200, Руководство пользователя

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7. Set MOSI:
a.
Press the MOSI F key to enter the MOSI menu.
b. Press the MOSI F key to select the channel that is connected to the SPI MOSI signal.
c. Press the Threshold F key to set the SPI MOSI signal’s threshold voltage level by Universal
Knob . The threshold voltage level is for decoding, and it will be treated as the trigger voltage
level when you set the trigger type to serial.
d. Press the F key to return previous menu.
Figure 46 MOSI Menu
8. Set CS:
a.
Press the CS F key to enter the MOSI menu.
b. Press the CS Type F key to select the chip select type.
c. Modify the Cs type’s value.
d. Press the F key to return previous menu.
Function
Menu
Settings Explanation
CS Type
~CS low voltage level of CS signal is available
CS high voltage level of CS signal is available
CLK Timeout
If the time between two edges of clock signal is less than (or
equal to) the timeout value, the signal between the two edges
is treated as a frame. The range of clock timeout is 100ns-5ms.
This setting is suitable for case where CS signal is not
connected, or the number of oscilloscope channels is
insufficient.
Table 1 Menu Explanations of the CS Type Parameters
Example:
Connect the data, CLK signals of a SPI bus respectively to C1, C2. Data width = 8-bit, Bit order = MSB,
and 12 bytes are transmitted in one frame.
In the SPI trigger signal menu, set the source and threshold of CLK, MISO signals. Set the CS type to
Clock Timeout, the clock idle time between frames is T3, the clock period is T1, then set the timeout to
a value between T1 and T3
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