FFT and RBW
RSA2203A & RSA2208A User Manual
3- 103
RBW Filter Shape...
Selects the filter from the following four types when
RBW/FFT is set to Man:
H
Rect (Rectangular)
H
Gaussian (default)
H
Nyquist
H
Root Nyquist
Rolloff Ratio.
Enters roll-off ratio when RBW Filter Shape is set to Nyquist or
Root Nyquist. Range: 0.0001 to 1 (the default is 0.5)
Extended Res.
The FFT point number is normally limited internally. You can
eliminate the limit using the On setting. Refer to
Limit on the FFT Points
on
page 3--105 for detail.
NOTE
. It is recommended to keep Extended Res. Off as its default condition.
When RBW/FFT is set to FFT.
FFT Points.
Selects FFT sample point numbers per frame when RBW/FFT is
set to FFT. Range: 64 to 65536 in increments of 2
n
. Higher numbers provide
higher resolution, and lower numbers provide faster measurements.
FFT Window...
Selects the FFT window (window function) when RBW/FFT is
set to FFT. For the window type, refer to Table 3--11 on page 3--108. The default
is Blackman-Harris 4B.
Extended Res.
Same as when RBW/FFT is set to Man.
When RBW/FFT is set to FFT, the waveform without RBW processing is
displayed on screen (see Figure 3--78).
FFT
RBW
Time domain data
after A/D conversion
Frequency
domain
data
Measurement
and display
When RBW/FFT is set to FFT
Figure 3- 78: Process flow when RBW/FFT = FFT
Summary of Contents for RSA2200A
Page 6: ......
Page 8: ......
Page 25: ...Getting Started...
Page 26: ......
Page 53: ...Operating Basics...
Page 54: ......
Page 82: ...Functional Overview 2 28 RSA2203A RSA2208A User Manual...
Page 119: ...Reference...
Page 120: ......
Page 208: ...Setting Timing Parameters 3 88 RSA2203A RSA2208A User Manual...
Page 220: ...Trigger 3 100 RSA2203A RSA2208A User Manual...
Page 256: ...Display Line 3 136 RSA2203A RSA2208A User Manual...
Page 268: ...Marker Operation and Peak Search 3 148 RSA2203A RSA2208A User Manual...
Page 274: ...Selecting Input Source 3 154 RSA2203A RSA2208A User Manual...
Page 298: ...File Format 3 178 RSA2203A RSA2208A User Manual...
Page 302: ...Screen Copy 3 182 RSA2203A RSA2208A User Manual...
Page 303: ...Appendices...
Page 304: ......
Page 320: ...Appendix A Specifications A 16 RSA2203A RSA2208A User Manual...
Page 336: ...Appendix D Options and Accessories D 4 RSA2203A RSA2208A User Manual...
Page 337: ...Glossary...
Page 338: ......
Page 346: ...Glossary Glossary 8 RSA2203A RSA2208A User Manual...
Page 347: ...Index...
Page 348: ......