Cisco ASR 914 Manual page 40

Connecting Cables to a GNSS Interface
Connecting Cables to a GNSS Interface
The sections describe how to connect cables from the Cisco ASR 914 Router to a GPS unit for input or output
timing of frequency:
Note
A Y-cable is required to connect to a primary and backup RSP in order to ensure that the router continues to
transmit timing signals in the event of a network failure. For a mini-coax connection, this Y-cable can be part
number CAB-BNC-7INY (7 inch BNC Y-cable). For an Ethernet connection, this Y-cable can be a RJ45 Cat5
1-to-2 splitter (3 female port RJ45 connector).
Note
When installing the cabling to the RSPs, we recommend that you leave a service loop of extra cabling sufficient
to allow for fan tray removal.
Connecting Cables to the Input 10Mhz or 1PPS Interface
Procedure
Step 1
Connect one end of a mini-coax Y-cable to the GPS unit.
Step 2 Connect one end of the split-side Y-cable mini-coax to the 10Mhz or 1PPS port on the primary RSP of the
Cisco ASR 914 Router.
Step 3 Connect the other end of the split-side Y-cable mini-coax to the 10Mhz or 1PPS port on the backup RSP of
the Cisco ASR 914 Router.
Connecting Cables to the Output 10Mhz or 1PPS Interface
Procedure
Step 1 Connect one end of a mini-coax Y-cable to the Slave unit.
Step 2
Connect one end of the split-side Y-cable mini-coax to the 10Mhz or 1PPS port on the primary RSP of the
Cisco ASR 914 Router.
Step 3
Connect the other end of the split-side Y-cable mini-coax to the 10Mhz or 1PPS port on the backup RSP of
the Cisco ASR 914 Router.
Connecting Cables to the ToD Interface
Procedure
Step 1 Connect one end of a straight-through Ethernet cable to the GPS unit.
Installing the Cisco ASR 914 Router
40
Installing the Cisco ASR 914 Router