YOKOGAWA DL7440 User Manual

10-85
IM 701450-01E
10
Analyzing and Searching Waveforms
• When the total analysis data is greater than 80000 bytes
The displayed result varies depending on the number of analysis data in the Pre and
Post sections as follows:
When the Pre section contains 44000 points and the Post section contains 44000 points, 40000
data points in the Pre section and 40000 data points in the Post section are displayed.
When the Pre section contains 8000 points and the Post section contains 80000 points, 8000
data points in the Pre section and 72000 data points in the Post section are displayed.
When the Pre section contains 80000 points and the Post section contains 8000 points, 72000
data points in the Pre section and 8000 data points in the Post section are displayed.
* Pre: Before (left) of the reference point. Post: After (right) of the reference point
Analysis Data List
The following four items are displayed.
• Analysis number
• Data1 value (hexadecimal)
• Data2 value (hexadecimal)
• CS signal status or the name of the CS signal whose priority is high
Analysis Numbers
Up to 80000 bytes can be displayed. Depending on whether the CS signal is ON, the
data of analysis number 0 (byte level) is defined as follows. The data points that are
newer than the data point of analysis number 0 (to the right on the screen) are assigned
numbers 1, 2, 3, and so on as the data points get newer. The data points that are older
than the data point of analysis number 0 (to the left on the screen) are assigned numbers
–1, –2, –3, and so on as the data points get older.
• When None of the CS Signals Is ON
The first detected data after the reference point becomes analysis number 0.
78
1
23456
Data
Clock
78
1
2
Analysis number–1 Analysis number 0 Analysis number 1
Reference point
• When the CS Signal Is ON
The data containing the reference point becomes analysis number 0. However, if the
reference point is between two data points, the first detected data after the reference
point becomes analysis number 0.
12
3
45678
Data
Clock
12
3
45678
12
3
45678
Data
Clock
12
3
45678
CS
CS
Analysis number 0 Analysis number 1
Reference point
Reference point
Analysis number–1 Analysis number 0
10.11 Analyzing and Searching SPI Signals

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English