YOKOGAWA DL7440 User Manual

10-29
IM 701450-01E
10
Analyzing and Searching Waveforms
Search Conditions of Parallel Patterns
The following conditions can be specified.
Clock Channel
Detects the status pattern in sync with the selected clock signal (clock channel).
DL7440
You can select from CH1 to CH4, and None.
DL7480
You can select from CH1 to CH8, and None.
• When the Clock Channel Is Set to None
The status patterns of all waveforms are determined.
• When the Clock Channel Is Set to CH1 to CH8/4
You can set the detection slope, level, and hysteresis of the selected synchronization
clock signal.
• Slope
You can select which slope edge, rising or falling, of the synchronization clock is to
be detected.
Rising slope
Falling slope
• Level
You can set the level for detecting the synchronization clock. The selectable range
is 8 divisions within the screen. The resolution is 0.01 divisions.
• Hysteresis
You can set the hysteresis. The selectable range is 0.3 divisions to 4.0 divisions.
The resolution is 0.1 divisions.
• When the level of the search target waveform changes from below the specified
lower limit of hysteresis to above and including the upper limit of hysteresis, it is
detected as a synchronization clock.
• When the level of the search target waveform changes from above the specified
upper limit of hysteresis to below and including the lower limit of hysteresis, it is
detected as a synchronization clock.
• For all other cases, it is not detected as a synchronization clock.
Search Target Waveform
The search target waveforms are all the waveforms that are not selected as the clock
channel. For each waveform, you can set the determination status (Pattern) and the
level and hysteresis for determining the status.
• Determination Status
The status of each waveform can be specified using the H (High), L (Low), and X
(Don’t Care) symbols. In the case of the logic input (Pod A and Pod B), you can set
the status on each bit.
H
Status when the waveform is greater than Thr Upper (1 in the case of logic input)
L
Status when the waveform is less than Thr Lower (0 in the case of logic input)
X
No determination.
10.4 Searching Waveforms Using the Search and Zoom Function

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English