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8-10
IM 701210-05E
Explanation
Zoomed waveforms of two locations can be displayed simultaneously (dual zoom). You
can also specify which channels to zoom. Zooming is not possible if the number of
points displayed on the screen is less than or equal to 10 points (less than or equal to 50
for FFT waveforms).
Selecting the Display Mode 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.
Note
On the DL750P, the range of zoom box Z2 can be printed expanded on the built-in printer
(zoom print). For details, see section 12.2.
Selecting the Zoomed Trace: Allocation
The traces whose Allocation is turned ON are zoomed. If the allocation is OFF, the trace
is not zoomed. You cannot allocate channels whose display is turned OFF.
Display Format of Zoomed Waveforms
Similar to the main waveform, 6 types (Main
1
, Single, Dual, Triad, Quad, Octal, Hexadecimal) of
display formats are available. You cannot set different formats for Z1 and Z2.
1. Selecting Main results in the same format as Main Format in the DISPLAY menu .
Zoom Rate: Z1 Mag/Z2 Mag
• Sets the T/div of the zoom waveform display area.
• If the time base is set to an external clock signal, select the magnification from the
following:
×
2,
×
2.5,
×
5,
×
10,
×
25,
×
50,
×
100,
×
250,
×
500,
×
1000,
×
2500, ... , ten-fold multiples of
1, 2.5, 5, up to
×
1000000
• The maximum zoom rate varies depending on the display record length.
Maximum zoom rate: Display record length
÷
10
• The maximum magnification during realtime recording with respect to the display
record length of the main waveform is as follows:
Main Waveform Record Length
Record Length of the Zoom Window
1 MW to 10 MW
250 kW
25 MW
500 kW
50 MW
1 MW
1000 MW or more
2.5 MW
• The display record length does not necessarily match the record length.
For details on the display record length, see appendix 1, “Relationship between the
Time Axis Setting, Sample Rate and Record Length.”
• You can set different zoom rates for Z1 and Z2 (zoomed waveform of two locations).
8.5 Zooming the Waveform