8-5
8
IM 701830-01E
Display
8.4
Accumulated Waveform Display
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For a description of this function, refer to page 1-16.
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Function
Normally the display is updated each time a trigger is activated. Therefore, it is difficult to
observe instantaneous disturbance of a waveform. To solve this problem, the accumulation
function has been provided. This function allows overlapping display of waveforms a specified
number of times.
Accumulation modes
Persist mode
: Allows overlapping display of waveforms in a single color (red in eight
color shades).
If “Persist Count” is set to “Infinite”, only the latest waveform is displayed
in the bright shade specified for each channel.
Color grade mode : Allows overlapping display of waveforms in eight colors according to the
frequency of occurrence of the data values.
Accumulative count (for the persist mode)
In persist mode, the accumulative count can be set within the range given below. If “Infinite” is
selected, overlapping display is performed indefinitely. The default setting is 16.
2 to 128 (steps 2
n
), Infinite
Grade width (for color grade mode)
In color grade mode, the frequency of data value occurrence is indicated in eight colors as
illustrated below. The grade width can be set within the range given below. The default setting
is 16.
Overlapping display is performed indefinitely in color grade mode.
2 to 32 (steps of 2
n
)
Higher frequency
red
pink
yellow
white
cyan
green
blue
black
24
20
16
12
8
4
1
0
to
to 23
to 19
to 15
to 11
to 7
to 3
192
160
128
96
64
32
1
0
to
to 191
to 159
to 127
to 95
to 63
to 31
When grade width = 4
When grade width = 32
red
pink
yellow
white
cyan
green
blue
black
For example, a dot which has appeared on the screen 100 times is displayed in red if the grade
width is 4, or in white if the grade width is 32.
Points for attention
• Cursor measurement and automatic measurement of waveform parameters are performed on
the latest waveform.
• It is not possible to use the history menu in accumulation mode. To use the history menu,
switch OFF accumulation mode.
• Accumulated data cannot be output to the built-in printer or an external printer using the
Centronics interface in different color shades.
• Only the latest waveform can be output to an external plotter.
• If acquisition is stopped with the
START/STOP
key is pressed, accumulation will be
stopped temporarily. Re-starting acquisition will resume accumulation from the point at
which acquisition was stopped.
