Connecting Acx2200 Routers To External Clocking Devices; Connecting 1-Pps And 10-Mhz Timing Devices To The Router; Connecting A T1 Or E1 External Clocking Device To The Router - Juniper ACX2200 Hardware Manual

ACX2200 Universal Access Router Hardware Guide

Connecting ACX2200 Routers to External Clocking Devices

Connecting 1-PPS and 10-MHz Timing Devices to the Router

Connecting a T1 or E1 External Clocking Device to the Router

82
ACX2200 routers support external clock synchronization for Synchronous Ethernet, T1
or E1 line timing sources, and external inputs.
Connecting 1-PPS and 10-MHz Timing Devices to the Router on page 82
Connecting a T1 or E1 External Clocking Device to the Router on page 82
The router has four SMB connectors that support 1-PPS and 10-MHz timing devices.
NOTE: Ensure that a cable of 3m 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:
Connect one end of the SMB coaxial cable to either the 1-PPS SMB connector or the
1.
10-MHz SMB connector on the router.
Connect the other end of the SMB coaxial cable to the 10-MHz or 1-PPS source network
2.
equipment.
NOTE: Ensure that the 10-MHz / 1-PPS sources are 50 ohms LVCMOS /
LVTTL (3.3v) compatible.
The router contains an external building-integrated timing system (BITS) timing port
labeled on the front panel of the router.
EXT REF CLK IN
To connect the router to a BITS T1/E1 external clocking device:
Attach an electrostatic discharge (ESD) grounding trap on your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Plug one end of the RJ-45 cable into the internal clock port on the craft interface.
2.
Plug the other end of the RJ-45 cable into the T1 or E1 external clocking device.
3.
Verify that the LEDs for the external clock input is lit steadily green.
4.
Configure the port. See:
5.
Initially Configuring the ACX2200 Router on page 85
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