Agilent Technologies HP 8642A/B Specifiche Pagina 239

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
  • Pagina
    / 453
  • Indice
  • SEGNALIBRI
  • Valutato. / 5. Basato su recensioni clienti
Vedere la pagina 238
Table 4-3 shows the relationship of L(f) to Allan Variance for a power
low-noise process. Using this table, an estimate of <7
y
(r) can be made
directly from a phase noise plot.
Table 4-3. Relation of Z(j) to Allan Variance
White Phase
Flicker Phase
White
Freq.
Flicker
Freq.
Random Walk
Freq.
Slope of £(f)
(dB/decade)
0
-10
-20
-30
-40
<Ty{T) =
y/L{f)U „-l
2.565i/
r
dttf)f (2.184+ en(J
h
r)) _
i
2.565^
r
1.665v/£(/)/^
o
v
0
<S
0
r =measurement time, y = Az//V
0
, v
0
= carrier frequency, / = modulation rate
or offset frequency, f
h
= measurement system bandwidth, y = ~-i/„
NOTE
Frequency fh is specified as the measurement system
bandwidth to minimize computation time. You may wish
to determine the smallest f^ for a given r that will provide
accurate results.
reu.05SEP89
Sigma vs. Tau 4-13
Vedere la pagina 238
1 2 ... 234 235 236 237 238 239 240 241 242 243 244 ... 452 453

Commenti su questo manuale

Nessun commento