YOKOGAWA DL7440 User Manual

10-86 IM 701450-01E
Data1 and Data2 Values
The Data1 and Data2 values are displayed in hexadecimal. Below are some exceptions.
• When the data is less than 8 bits, “–” is displayed.
• When indefinite data (bit whose status is neither 1 or 0) exists, “∗” is displayed.
Indefinite data is considered the same status as the previous bit for the analysis. If
the first bit (left most bit in the display range) is indefinite data, it is analyzed as 0.
CS
Displays the CS signal enable status. Note the following:
• When none of the CS signal is ON, blank is displayed.
• When only one CS signal is ON, the status H or L of the CS signal is displayed.
• When multiple CS signals are ON, the name of the CS signal with high priority is
displayed. For a description of the priority, see page “Priority” on page 10-84.
Display Example of Analysis Data
Below is an example of the analysis data when analysis is performed by changing the
analysis condition of one set of I/O data.
Clock
Data1
Data2
CS
00
0
01000
11
0
11000
11
1
00100
00
1
1110
1
12
3
45678
12
3
45678
Bit read direction: MSB First
Reference point
• Analysis Condition Clock (CH1) = and CS (CH4) = L
Display Item Analysis Data Display
Analysis number (No.) 0
Hexadecimal display of Data1 (Dt1) 08
Hexadecimal display of Data2 (Dt2) E4
Status of the CS signal (CS) L
• Analysis Condition Clock (CH1) = and CS (CH4) = H
Display Item Analysis Data Display
Analysis number (No.) 0
Hexadecimal display of Data1 (Dt1) D8
Hexadecimal display of Data2 (Dt2) 3D
Status of the CS signal (CS) H
• Analysis Condition Clock (CH1) = and CS (CH4) = X
Display Item Analysis Data Display
Analysis number (No.) 0 1
Hexadecimal display of Data1 (Dt1) 08 D8
Hexadecimal display of Data2 (Dt2) E4 3D
Status of the CS signal (CS) L H
Note
• If an arbitrary data is selected (highlighted) in the analysis data slit, the zoom position moves
to the beginning of the data. Conversely, if you move the zoom position, the data
corresponding to the zoom position is highlighted.
• If the CS signal is ON and the CS signal on the main waveform display screen does not
contain a transition point from H to L or L to H, the I/O data is not analyzed.
• Analysis and search is not possible while waveform acquisition is in progress.
• Analysis and search cannot be performed on accumulated waveforms. However, analysis
and search are possible on the accumulated waveform remaining as a history waveform.
10.11 Analyzing and Searching SPI Signals

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English