Tektronix 11801C User Manual

Appendix D: Algorithms
11801C User Manual
DĆ5
H (')*
x(n) +
R * 1
|
n + 0
0.42 * 0.5 cos(2p
n
R
) ) 0.08 cos(4p
n
R
)
H (')*6..%/
x(n) +
R * 1
n + 0
0.35875 * 0.48829 cos(2p
n
R
)
) 0.14128 cos(4p
n
R
) * 0.01168 cos(6p
n
R
)
3$!.!
  0$! .!+. (!*#0$ 3$%$ )1/0 !  ,+3!. +" 
$! "%(0!. $.0!.%/0%/ +" 0$!  3%* +3%*# "1*0%+*/ .! /1)).%5! %*
(! 6 $!/! *1)!./ .! 0'!* ".+)  0(! %* .! !.%  ..%/
     ! %0! 4 +1#(/  ((%+0  !)6
% .!// * %!#+  ,, 
TableĂDĆ1:ăFilter Characteristics of FFT Windowing Functions
Windowing
Function
Highest
SideĆ
lobe
(dB)
Noise
BandĆ
width
(bins)
3dB
BandĆ
width
(bins)
6dB
BandĆ
width
(bins)
Scallop
Loss
(dB)
Worst
Loss
(dB)
Rectangular      
Triangular      
Hanning      
Hamming      
Blackman      
BlackmanĆ
Harris
     
3$!.!
bins .!"!./ 0+ 0$! ".!-1!*4 %*/ 0$! !2!* *1)!.! ,+%*0/ %* 0$! 
32!"+.)
highest sidelobe %/ 0$! )%*%)1) /0+,* 00!*10%+* 3$%$ %* %0!/
$+3 3!(( (!'#! %/ (+'! 
noise bandwidth %/ 0$! !-1%2(!*0 *+%/! * 3% 0$ 0$! 3% 0$ +" *
!-1%2(!*0 .!0*#1(. /,!0.( .!/,+*/! 0$0 3+1( ,// 0$! /)!
*+%/! ,+3!. / 0$%/ 3%* +3%*# "1*0%+*
3 dB bandwidth * 6 dB bandwidth ,,(4 0+ 0$! )&+. (+! $!/!
""!0 0$! ".!-1!*4 .!/+(10%+*

Tektronix 11801C Specifications

General

Brand	Tektronix
Model	11801C
Category	Test Equipment
Language	English