JDS Uniphase SWS15100, Руководство пользователя

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68 – Operating and Maintenance Instructions
Mode Menu
The Mode Menu, shown in Figure 56, allows the user to set the wavelength band, the polarization
state to expect from the transmitter, and the processing mode. The default processing mode is
PDL. For this mode, the transmitter polarization state must be 1. Ensure that Polarization Mode
1 is selected on the source optics module.
Figure 56: Mode Menu
Band —selects the type of data to be processed which can be C-band, L-band, or a combination
of both. The selection must match the hardware available. Select C-band to have only a C-band
SOM, L-band to have only an L-band SOM, and C+L-band if both SOMs and a Dual Band
Selector Switch Module are installed.
Transmitter Polarizer State —for PDL measurements, the default is four PDL states (S1 to
S4). If a polarization controller is not installed, select mode 0, which is S0. The transmitter
polarization states that are available with a polarization controller, as a function of the selected
mode, are listed in Table 12. The individual polarization states are defined in Table 13.
Table 12: Polarization Modes
Mode S0 S1 S2 S3 S4
M0
3
M1
3 3 3 3
M2
3 3 3
M3
3 3
M4
3 3
M5
3 3
Table 13: Polarization States
Polarization State Description
S0 Circular polarization at the output of the polarization controller. If there
is no controller, the polarization is linear (90
°
).
S1 Circular polarization with +3 dB loss
S2
Linear (0
°
) polarization
S3
Linear (90
°
) polarization
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