YOKOGAWA DL7440 User Manual

2-28 IM 701450-01E
Pulse Width Search <For the setup procedure, see section 10.4>
Search is performed on whether the pulse width of the waveform above or below a
specified level is shorter or longer than the specified determination time.
T
T
T1
T2
T
Pulse>Time
Pulse<Time
T1<Pulse<T2
Time Out
T, T1, T2: Specified determination time
: Center position for zoom display
: Start point for next search
Auto Scroll Search <For the setup procedure, see section 10.4>
The zoom position automatically moves (auto scroll) in the specified direction. You can
confirm the zoomed waveform and stop the scroll operation at an arbitrary position.
Analyzing and Searching SPI Signals <For the setup procedure, see section
10.11>
SPI (Serial Peripheral Interface) is a serial interface proposed by Motorola. Data
transmission is carried out using three signal wires, a clock signal, output data, and input
data. By adding a chip select signal (CS), a master device can control the data output of
a slave device. Data is transmitted in units of bytes (8 bits) by synchronizing to the clock
signal. The DL7400 can analyze and search the SPI signal at the byte level.
I/O1
I/O2
SCK
SDO
SDI
CS1
CS2
Clock
Output data*
Input data*
SS
SCK
SI
SO
Master Slave 2
SS
SCK
SI
SO
Slave 1
* Input/Output as viewed from master.
Clock
Output data signal*
Input data signal*
Chip select signal (CS)
Reference point Analysis data
Analysis number: 0
Output data signal*: 08
Input data signal*: C4
Chip select signal: L (low level)
12
3
4567
8
* Input/Output as viewed from master.
2.6 Analyzing and Searching Waveforms

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English