BRUEL & KJAER 2032 - Page 158

The Analytical Time Signal az(n) can be displayed in terms of:
Real
part
Imaginary part
Magnitude
Phase
Nyquist
plot
Nichols plot
Similar for Ch.B
13.2.2. Instantaneous Time Function Ch.A vs. Ch.B
a(n) vs. b(n): real-valued Time Records of input, 0 ~ n ~ N -1
For not zero pad measurement modes : N = 2048
For zero pad measurement modes: N = 1024
13.2.3. Enhanced Time Function Ch.A or Ch.B
a(n):ensemble averaged Time Records of each sample across a series of instantaneous
Time Records, each triggered from a common condition, 0 ~ n ~ N -1, N = 2048.
The analytical signal
corresponding to a(n) is:
r'-J
az(n) = a(n) + j a(n)
,........__;
where a(n) =JF'[ a(n)]
{
SA(k) for k = 0
az(n) = 7-
1
[ GA(k)] where GA(k) = 2 SA(k) for 1 ~ k ~ N/2 -1
0 for N/2 ~ k ~ N -1
and SA(k) = 7 [ a(n)]
The Analytical Enhanced Time Signal az(n) can be displayed in terms of:
Real part
Imaginary part
Magnitude
Phase
Nyquist plot
Nichols plot
Similar to Ch.B.
13.2.4. Enhanced Time Function Ch.A vs. Ch.B
a(n) vs. b(n): 0 ~ n ~ N -1, N = 2048
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