Data Sheet

7
FFT analysis functions
FFT capability includes single-signal FFT for analyzing
frequency components, two-signal FFT for transfer
function analysis, and octave analysis for acoustic
analysis. The source sig nal can be selected from
waveform data captured by the memory recorder, and
isolating required sections is also possible. (Number of
data points: 1,000 to 10,000)
Recording paper
Function outline of recorder (REC)
The input signal is converted to digital form and
displayed and printed in real time. The maximum chart
speed is 20 mm/s (in the 500 ms/DIV range). After the
end of measurement, measurement data for the last
2,000 DIV *
1
are still in memory and can be viewed
with the back-scroll function or printed out again.
*
1
When the memory expansion is installed, the
maximum recording length for reprinting
is prolonged. In the standard configuration,
recording length is 2,000 DIV. With memory
expansion, it is 10,000 DIV.
Available waveform processing functions include
all arithmetic operations as well as differentiation,
integration, and other functions whose results can be
displayed as waveforms. Up to 16 functions can be set.
Simultaneous execution of up to 16 mathematical
functions
* In MEM function
13 types of parameters such as maximum value and
minimum value can be selected for processing. For
simultaneous operation in all 32 analog channels, up to 4
parameters are possible.
Waveform parameter processing * In MEM function
After defining a reference waveform bounding area,
it is possible to check whether waveforms go outside
this reference area. As opposed to simple level-based
triggering, even complex waveforms can be evaluated
quickly and reliably, because both the level direction and
the time axis direction are taken into consideration.
* Registered patent No. 2028013 in Japan
Waveform evaluation * For MEM function and FFT analysis functions
Effective value (RMS) recorder function
This function is designed exclusively for use on 50/60
Hz power supply lines and DC. High-speed sampling is
applied to calculate the rms value from the waveform
data *
2
, and the result is recorded as a graph.
*
2
Using fixed 200 μs sampling, data for two waveforms are captured
for calculating the rms value. This process is repeated 20 times per
second, resulting in high-speed response that is 10 times faster than
that of a digital tester or similar (using a 2-second update rate).
- Function Details -
Time domain
Frequency domain
100 V power line
waveform
Chart of Recorder function
Chart of RMS recorder function