CANOGA PERKINS 3240S SNMP Managed Fiber Optic Multiplexer - Manual (Page 14)

3240S F I B E R O P T I C M U L T I P L E X E R
3240S Fiber Optic Multiplexer
1.3.7 Fiber Optic Options
The 3240S may be ordered with single or redundant fiber optics in either multimode or multimode/single mode versions. The
standard versions which are available have four specific options:
• An 850nm transmit diode or LED for multimode fiber only.
• A 1310nm low power laser diode for multimode or single mode fiber.
• A 1310nm high power laser diode for multimode or single mode fiber.
• A 1550nm extended distance laser diode for multimode or single mode fiber.
The optical Tx connectors, Primary and Secondary, are staged differently on laser versions of the 3240S.
On the laser model they are staged between the MAST/SLV switch and the PRI/AUTO/SEC switch. On
non-laser units, the connectors are located in the SECONDARY and PRIMARY Tx locations.
1.3.7.1 Non-Redundant Single Link Optics
If non-redundant optics are installed, they will reside in the primary locations. There will not be a Pri/Auto/Sec Switch
installed and the Alarm Relay will follow the Sync Loss indicator.
1.3.7.2 Redundant Link Optics
If redundant optics are installed, both the primary and secondary locations are used. (Refer to Chapter 2, Section 2.4,
"Redundant Optics Operation," for an operational description of the redundant optics circuit.) The Pri/Auto/Sec Switch is
installed and the Alarm Relay follows the Redundant Optics Alarm (ALM) indicator, which is controlled by the Automatic
Switch Over circuit and Backup Monitor circuit.
Redundant optics are not field installable. The user cannot upgrade to this configuration unless the
equipment is returned to the factory for retrofit.
1.3.8 HI/LO Optical Power Switch
The 3240S features a HI/LO Optical Power Switch for the primary and secondary transmit fiber optic ports. This allows the
user to match the transmitted power levels to the actual loss of the installed fiber optic cable. The factory default setting is
LO which accommodates a moderate to short fiber link with negligible fiber loss. The optical power switches which are
labeled, PRIMARY OPTIC PWR and SECONDARY OPTIC PWR, can be located on the rear panel of the 3240S. Reference
Figure 1-2.
1.3.9 Installation of the Network Management System (NMS) Module
The NMS Module is a field installable option as referenced in Figure 1-4. The user can upgrade unmanaged units without
sending the equipment back to the factory for retrofit.
The NMS module is not hot-swappable! Equipment must be powered down to install this module.
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