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Connecting a Cable to the Output 10-MHz or 1-PPS Interface
2. Connect the other end of the mini-coax cable to the 10-MHz or 1-PPS port on the front panel of the Cisco
NCS 540 Small Density router.
Connecting a Cable to the Output 10-MHz or 1-PPS Interface
1. Connect one end of the mini-coax cable to the external unit. The external unit can be measuring unit or
any other unit that requires 1PPS/10M refernce.
2. Connect the other end of the mini-coax cable to the 10-MHz or 1-PPS port on the front panel of the Cisco
NCS 540 Small Density router, which is configured as 1588 secondary mode or boundary clock mode.
Connecting a Cable to the ToD Interface
1. Connect one end of a straight-through Ethernet cable to the GPS unit.
2. Connect the other end of the straight-through Ethernet cable to the ToD or 1-PPS port on the router of the
Cisco NCS 540 Small Density router.
Warning
Install and Remove Transceiver Modules
Install and Remove SFP Modules
Before you remove or install an SFP or SFP+ module, read the installation information in this section.
Warning
Caution
Install the Device
24
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the ToD ports only to intra-building or unexposed wiring or cable. The intrabuilding cable must
be shielded and the shield must be grounded at both ends. The intra-building port(s) of the equipment
or subassembly must not be metallically connected to interfaces that connect to the OSP or its wiring.
These interfaces are designed for use as intra-building interfaces only (Type 2 or Type 4 ports as described
in GR-1089-CORE) and require isolation from the exposed OSP cabling. The addition of Primary
Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring.
Statement 1051 Laser Radiation
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams
or view directly with optical instruments.
Protect the router by inserting a clean SFP/SFP+ module cage cover, shown in the figure below, into
the optical module cage when there is no SFP or SFP+ module installed.
Install the Device
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