Connecting The Ex9253 Switch To External Clocking And Timing Devices; Connecting 1-Pps And 10-Mhz Timing Devices To The Switch - Juniper EX9253 Hardware Manual

Connecting the EX9253 Switch to External Clocking and Timing Devices

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Connecting 1-PPS and 10-MHz Timing Devices to the Switch | 94

Connecting a BITS External Clocking Device to the Switch | 95
The switch supports external clock synchronization for Synchronous Ethernet and external inputs. The
connections to the switch are made through the ports on the front panel.
the ports that are used to connect the switch to external clocking and timing devices.
Figure 37: Ports Used to Connect the Switch to External Clocking and Timing Devices
1 Time-of-day (ToD) port with LED. Support for
—
this port is not available in this release.
2 BITS ports with LEDs
—
Connecting 1-PPS and 10-MHz Timing Devices to the Switch
The switch has four SubMiniature B (SMB) connectors that support 1-PPS and 10-MHz timing devices
(see Figure 37 on page 94).
NOTE: Ensure that a cable of 3 m or less in length is used for the 10-MHz and 1-PPS connectors.
To connect the SMB coaxial cable to the external clocking input port:
1. Connect one end of the SMB coaxial cable to either the socket labeled IN on the 1-PPS SMB
connector or the 10-MHz SMB connector on the switch.
2. Connect the other end of the SMB coaxial cable to the 1-PPS or 10-MHz source network equipment.
Figure 37 on page 94
3 10-MHz input and output timing ports
—
4 1-PPS input and output timing ports
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