Connecting The Acx1000 Or Acx1100 Router To External Clocking Devices; Connecting 1Pps And 10Mhz Timing Devices To The Router; Connecting A T1 Or E1 External Clocking Device To The Router - Juniper ACX1000 Hardware Manual

ACX1000 and ACX1100 Universal Access Router Hardware Guide
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Connecting the ACX1000 or ACX1100 Router to External Clocking Devices

Connecting 1PPS and 10MHz Timing Devices to the Router

Connecting a T1 or E1 External Clocking Device to the Router

54
If attaching a reporting device for the other kind of alarm, repeat the procedure.
Alarm Contact Port on ACX1000 and ACX1100 Routers on page 18
Alarm Contact Port Pinouts for ACX1000 and ACX1100 Routers on page 131
The ACX1000 and ACX1100 routers support external clock synchronization for
Synchronous Ethernet, T1 or E1 line timing sources, and external inputs.
Connecting 1PPS and 10MHz Timing Devices to the Router on page 54
Connecting a T1 or E1 External Clocking Device to the Router on page 54
The router has four SMB connectors that support 1PPS and 10MHz timing devices.
NOTE: Ensure a cable of 3m or less in length is used for the 10 MHz and 1PPS
connectors.
To connect the SMB co-axial cable to the external clocking input port:
Connect one end of the SMB co-axial cable to either the 1PPS SMB connector or the
1.
10 MHz SMB connector on the router.
Connect the other end of the SMB co-axial cable to the 10 MHz or 1PPS source network
2.
equipment.
NOTE: Ensure that the 10MHz / 1PPS 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. The external clock interface
EXT REF CLK IN
allows BITS or GPS clock source input to the centralized timing circuit, or allows
centralized timing to be output to BITS or GPS.
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.
Copyright © 2013, Juniper Networks, Inc.