![YOKOGAWA AQ6370D Скачать руководство пользователя страница 391](http://html2.mh-extra.com/html/yokogawa/aq6370d/aq6370d_user-manual_3665131391.webp)
App-20
IM AQ6370D-01EN
Appendix 4 Detailed Explanations of WDM Analysis Function
Related to SNR Analysis
Parameter
Default
Setting Range Unit
Description
NOISE ALGO
AUTO-FIX
AUTO-FIX
MANUAL-FIX
AUTO-CTR
MANUAL-CTR
PIT
-
Selection of algorithms for noise level
measurement.
NOISE AREA
0.40nm
0.01 to 10.00nm nm
A range of waveform data for use in noise
level analysis is specified as a range
centering on channel wavelengths.
When N_ALGO is:
• AUTO-FIX "AUTO"
• MANUAL-FIX **.**
• AUTO-CTR
"Between Ch"
• MANUAL-CTR "Between Ch"
• PIT
"-"
MASK AREA
0.20nm
0.01 to 10.00nm nm
Specify the signal optical spectrum range
to be masked within the waveform data,
while using the channel wavelength as its
center.
When N_ALGO is:
• AUTO-FIX "-"
• MANUAL-FIX
When F_ALGO is LINEAR: "-"
Other cases: input of parameter values
• AUTOL-CTR "-"
• MANUAL-CTR
When F_ALGO is LINEAR: "-"
Other cases: input of parameter values
Limiter is applied during input to ensure
NOISE AREA is MASK AREA or more.
• PIT "-"
FITTING ALGO
LINEAR
LINEAR
GAUSS
LORENZ
3RD POLY
4TH POLY
5TH POLY
-
Selection of a fitting algorithm for obtaining
noise levels.
NOISE BW
0.10nm
0.01 to 1.00nm nm Setting of noise bandwidth.
DUAL TRACE
OFF
ON/OFF
-
OFF: Active trace is handled as the target
for analysis.
ON: Wavelengths and levels are
calculated from TRACE A. Noise
levels are calculated from TRACE B.