YOKOGAWA DL7440 User Manual

8-11
IM 701450-01E
8
Waveform Display and Information Display
Explanation
Zoomed waveforms of two locations can be displayed simultaneously (dual zoom). You
can also specify which channels to zoom. Zoom is possible until the number of
displayed points is 50 (40 depending on the time axis setting).
Zoom Mode (Display Method of Zoomed Waveforms)
Main
Displays only the main (unzoomed) waveform.
Z1 Only
Displays only the zoomed waveform of zoom box Z1.
Z2 Only
Displays only the zoomed waveform of zoom box Z2.
Main&Z1
Displays the main waveform in the top window and zoomed waveform of zoom box Z1 in the
bottom window.
Main&Z2
Displays the main waveform in the top window and zoomed waveform of zoom box Z2 in the
bottom window.
Z1&Z2
Displays the zoomed waveform of zoom box Z1 in the top window and the zoomed waveform
of zoom box Z2 in the bottom window.
Main&Z1&Z2
Displays the main waveform in the top window, the zoomed waveform of zoom box Z1 in the
lower left window and the zoomed waveform of zoom box Z2 in the lower right window.
Zoomed Waveforms
Waveforms whose Allocation had been turned ON (CH1 to CH8, Math1, Math2, PodA,
and Pod B) are zoomed. Waveforms whose Allocation had been turned OFF are not
zoomed. You cannot zoom waveforms whose display is turned OFF.
Display Format of Zoomed Waveforms
Like the main waveform, 7 types (Main
1
, Single, Dual, Triad, Quad, Hexa, and Octal
2
) of
display formats are available. You cannot set different formats for Z1 and Z2.
1 If you select Main, the zoom waveform display frame is set to the same display format as the
Format setting of the DISPLAY menu.
2 Octal can be used on the DL7480.
Zoom Rate
• The upper limit of the zoom rate is determined from the display record length as follows:
Upper limit of zoom rate Display record length÷50 (or 40)
• The display record length does not necessarily match the record length.
• For details on the display record length, see appendix 1.
• You can set different zoom rates for Z1 and Z2 (zoomed waveform of two locations).
Zoom Position
• The zoom position can be set by specifying the zoom center position (center of the
zoom box) in the range of –5 to +5 divisions with the center of the waveform display
frame set to 0 divisions. However, when the record length is 16 MW, the zoom
position can be set only in the range in which the edge of the waveform matches the
edge of the window. The resolution is 10 divisions÷the display record length.
• The zoom box enclosed by solid lines is Z1 and the one enclosed by dashed lines is
Z2. Since each box is independent, you can set the position separately.
Range of the Automated Measurement of Waveform Parameters and Zoom Range
Sets the measurement range of the automated measurement of waveform parameters to
the zoom range of Z1 or Z2. This setting is active even when the automated
measurement of waveform parameters is turned OFF.
8.4 Zooming the Waveform

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English