Casio E-Con EA-200 기술 참조 - 페이지 11
{카테고리_이름} Casio E-Con EA-200에 대한 기술 참조을 온라인으로 검색하거나 PDF를 다운로드하세요. Casio E-Con EA-200 20 페이지. Casio ea-200 calculator-tools: user guide
Casio E-Con EA-200에 대해서도 마찬가지입니다: 제품 카탈로그 (16 페이지)
페이지 인쇄
<<FFT>>
Frequency characteristics are calculated from sampled values and sampling
period.
The number of FFT target data items (2^n) is input to parameter n.
1-13 (2^13 = 8192)
Calculation Timing
When data is requested
Sent Timing
• When 1 (d/dt)
After sampled data is sent, linear data is sent when data is requested.
• When 2 (d/dt, d
2
/dt
2
)
After sampled data is sent, linear data is sent when data is requested.
In addition, quadratic data is sent when data is requested.
• When 10 and 11 (FFT)
After sampled data is sent, FFT real number part data is sent when data is
requested.
In addition, FFT imaginary number part data is sent when data is requested.
Period Frequency Sampling
{ 1, Channel, Operation, Pin No, Trigger Threshold, Trigger Edge }
(Operation 5, 6, 11)
Compares 12-bit D/A thresh and sampled data, and measures the pulse interval.
Time resolution is 0.868 µ sec.
Read either of two pins → Set by sampled pin number
4 pulse interval types → Set by trigger edge
4. Pin No
Specify the pin number for reading the period frequency.
2
1pin Vin
10V
10 6pin Vin-low 0–5V
5. Trigger Threshold
Threshold voltage value for comparison with sampled values.
6. Trigger Edge
• Period, frequency sampling (Operation= 5, 6)
0 Rising-Rising
1 Falling-Falling
2 Rising-Falling
3 Falling-Rising
• Time (Operation = 11)
0 Rising
1 Falling
2 Both (Rising and Falling)
– 11 –