Cursor Measurements - YOKOGAWA DL7440 Operation Manual

Introduction to Main Functions
You can search saved waveforms and zoom-display those that match the search criteria. The following five search
methods are available.
Performs a search based on the
number of times that a waveform falls
below or above (rising/falling) a
specified level.
Searches for waveform pulses lying
above or below a specified level
whose widths are of shorter or longer
duration than a specified time.
SPI (serial peripheral interface) is an interface developed by Motorola. In this system, data is transferred using three
signal wires: clock signal, output data, and input data. By adding a chip select signal (CS), a master device can
control output data from a slave device. Data is synchronized to the clock signal and transmitted in units of bytes (8-
bits). The DL7400 analyzes and searches these SPI signals in single-byte units.
You can place cursors on a waveform to display the measured values at the points where the cursor intersects with
the waveform. There are four types of cursor available: horizontal, vertical, marker, and angle cursor.
Vertical cursor
14
Search and Zoom
User's manual section 10.4, "Searching Waveforms Using the Search and Zoom Function"
Performs a search based on whether
the serial status pattern of the
waveform (the status pattern of the
waveform that changes over time) is
High(H)/Low(L)/Don't care(X) and
whether it is the same as a specified
pattern.
The zoom position automatically
moves in the specified direction. You
can watch the zoomed waveform as it
scrolls, then stop it at any desired
position.
Analyzing or Searching SPI Signals
I/O1
I/O2
SCK
Output data*
SDO
Input data*
SDI
Master
* Input/output from the viewpoint of the master.

Cursor Measurements

Cursor1 Cursor2
Measured values at the cursor
User's manual section 10.11, "Analyzing and Searching SPI Signals"
SS
SCK
SI
SO
CS1
Slave 1
CS2
SS
Clock
SCK
SI
SO
Slave 2
User's manual section 10.5, "Making Cursor Measurements"
Marker cursor
Marker 1
Measured values at the cursor
Performs a search based on whether
the parallel status pattern of the
waveform (the status pattern of the
waveforms at the same point in time)
is High(H)/Low(L)/Don't care(X) and
whether it is the same as a specified
pattern. You can also search by each
bit of a logic signal.
Marker 2
Marker 4
Marker 3
IM 701450-02E