YOKOGAWA AQ6370D User Manual

App-12
IM AQ6370D-01EN
Appendix 3 Details of Each Analytical Functions
SMSR2
The main mode is defined as the highest mode peak. The side mode is defined as the
highest mode peak adjacent to the main mode.
SMSR
Main Mode
(
λA
)
Side Mode
(
λB
)
The analysis algorithm for the SMSR2 mode is as follows:
1. A mode search is performed to obtain the mode peaks.
2. The wavelength of the main mode is set to λA.
3. The wavelength of the side mode is set to λB. If there are no mode peaks other than
the one whose wavelength has been set to λA, λB is set to λA.
4. The levels (linear values) of λA and λB are set to LA and LB, respectively.
5. The SMSR and Δλ are obtained from the following equations.
SMSR = LA / LB
Δλ = λB − λA
SMSR3
The main mode is defined as the highest mode peak. The side modes are defined as the
highest mode peaks outside of the mask area—one on the left side and one on the right
side of the mask area.
MASK AREA
SMSR(L) SMSR(R)
Main Mode
(
λA
)
Side Mode
(
λB
)
Side Mode
(
λC
)
The analysis algorithm for the SMSR3 mode is as follows:
1. A mode search is performed to obtain the mode peaks.
2. The main mode point is set to PA. The wavelength of this point is set to λA.
3. The wavelength of the side mode that has a wavelength shorter than PA is set to λB.
The wavelength of the side mode that has a wavelength longer than PA is set to λC.
If relevant points do not exist, for the levels outside the mask area, the wavelength at
the highest level whose wavelength is shorter than PA is set to λB and the wavelength
at the highest level whose wavelength is longer than PA is set to λC.
4. The levels (linear values) of λA, λB, and λC are set to LA, LB, and LC, respectively.
5. The SMSR and Δλ are obtained from the following equations.
SMSR(L) = LA / LB
SMSR(R) = LA / LC
Δλ(L) = λB − λA
Δλ(R) = λC − λA

YOKOGAWA AQ6370D Specifications

General

Brand	YOKOGAWA
Model	AQ6370D
Category	Measuring Instruments
Language	English