Operating Manual for UTD2000/3000
2
Te rm expl an ati on:
FFT resolution:
Nyquis t frequ ency:
Reference waveform
It is defined as factor of samplin
and calculation point. FFT resolution increases
when sampling rate decreases for fixed calculatio
Original waveform can not be
reset until using sampling rate of at least 2f for
waveform with the maximum frequency of “f”. It is
also called as Nyquist guideline. “f” refers to Nyquist
frequency and “2f” refers to Nyquist sampling rate
Please refer to waveform stored in nonvolatile
memory (NVM) of digital storage os cillograph or
peripheral U disk with name of RefA and RefB as
follows. Please operate acc ording to followin
steps to call out or close reference waveform
5. Please press REF menu key on the front panel
for 5.7-screen oscillograp
Please press [STORAGE]key and enter into the
second page to select call-out for 7-inc
oscillograph (namely, UTD2000L/2000EX series).
2. Please press [RefA] (RefA reference option) and
select information source then select its position b
rotating multi-purpose knob in upper part of front
panel. 1 10 (or 1 20) can be selected for the
position. Press “call-out” to call out waveform
which is stored inthe position originally after
selecting a certain position such as “1”. Please
plug in U disk if waveform is stored in the U disk
There are 2 options for magnetic disk as follows
DSO/USB; Please press [F2] key and select USB
(The menu can not be activated until plugging in U
disk.) Called out waveform is displayed on the
screen for waveform called out and stored from U
disk. Please press cancel key (F5) Return to
previous menu after waveform call-out
3. To press [RefB] (RefB reference option) and
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