3-15
IM 701450-51E
SPI Bus Signal Analysis Function
3
• Pattern Condition
You can set the pattern condition only when a clock channel is not specified. Select
from the following:
Enter
Activates a trigger when the specified CH5 to CH8 pattern is met.
Exit
Activates a trigger when the specified CH5 to CH8 pattern is no longer met.
If you set the clock channel to any channel from CH5 to CH8, the pattern condition is set to True.
Setting the Trigger Level, Trigger Coupling, Etc.: Level/Coupling
Set the trigger level, hysteresis, trigger coupling, and HF rejection of each channel.
For details on the trigger level, hysteresis, trigger coupling, and HF rejection, see page 6-
17 in section 6.8, “Setting the A->B(N) Trigger (ENHANCED)” in the
DL7440/DL7480
User’s Manual (IM701450-01E).
Setting the Trigger Mode
Set the conditions for updating the displayed waveforms as a trigger mode. There are
five trigger modes: auto mode, auto level mode, normal mode, single mode, and single
(N) mode.
For details on the trigger modes, see section 6.1, “Selecting the Trigger Mode” in the
DL7440/DL7480 User’s Manual (IM701450-01E).
Setting the Record Length
The record length sets the amount of data to be written into the acquisition memory. The
selectable maximum record length varies depending on the model.
16 MW memory model (701460 and 701480)
1 k, 10 k, 50 k, 100 k, 250 k, 500 k, 1 M, 2 M, 4 M, 8 M (, 16 M)
4 MW memory model (701450 and 701470)
1 k, 10 k, 50 k, 100 k, 250 k, 500 k, 1 M, 2 M (, 4 M)
*
The value inside the parentheses is selectable only when interleave mode is ON.
For details on the record length, see section 7.2, “Setting the Record Length” in the
DL7440/DL7480 User’s Manual (IM701450-01E). For details on interleave mode, see
section 7.3, “Using Interleave Mode.”
Starting/Stopping the SPI Bus Signal Acquisition
When you start the SPI Bus signal acquisition, triggers are activated on the specified
trigger conditions.
To proceed to the analysis, you stop the SPI Bus signal acquisition.
3.4 Setting SPI Bus Signal Acquisition Conditions
