Iwatsu DS-8814, Operation Manual

Page: 63 / 141

44
Waveform display
There are four types of waveforms displayed on the screen: CH1/CH2/
CH3/CH4, REF1/REF2, Math1/Math2, and FFT.
Displays sampling results of signals input to channels 1 to 4.
Displayed waveforms can be expanded or reduced.
CH1 to CH4 waveforms are also used as waveforms to be saved/recalled
to an ATA card or floppy disk.
Displays reference waveforms recorded by the REF SAVE button.
Displayed waveforms cannot be expanded or reduced.
Reference waveforms are used to compare CH1 to CH4 waveforms.
Displays results of calculations selected by Math in the DISPLAY menu
on CH1, CH2 waveforms or CH3, CH4 waveforms. Calculations are
executed regardless of display (non-display) of CH1 to CH4 waveforms.
Performs the FFT calculation of CH1 to CH4 waveforms and displays
the calculation results.
For details, see the FFT calculation (page F-1).
CH1, CH2
CH3, CH4
waveforms
REF1, REF2
(reference)
waveforms
Math1, Math2
(calculation)
waveforms
FFT
(calculation)
waveforms
Horizontal display position immediately after acquisition of waveform
CH1 to CH4 waveforms are displayed as shown in the figure below immediately
after they are acquired (until any panel operation). Data outside the screen can be
observed by DELAY operation or reduction operation by TIME/DIV after
acquisition of waveform is stopped. Depending on the sweep rate setting or
ACQUISITION setting, the amount of displayed data may be less than the value.
Waveform display screen
Short memory
Long memory
Outside
screen
1000 data
100000 data
First data acquired Last data acquired
24
data
2400
data