Connecting The T4000 Router To An External Clocking Device - Juniper T4000 Hardware Manual

Related
Documentation

Connecting the T4000 Router to an External Clocking Device

Copyright © 2013, Juniper Networks, Inc.
To connect an external device to an alarm relay contact:
Prepare the required length of wire with gauge between 28 AWG and 14 AWG (0.08
1.
2
and 2.08 mm ).
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
While the terminal block is not plugged into the relay contact, use a 2.5-mm flat-blade
3.
screwdriver to loosen the small screws on its side. With the small screws on its side
facing left, insert wires into the slots in the front of the block based on the wiring for
the external device. Tighten the screws to secure the wire.
Orient the terminal block according to the labels to the left of the appropriate relay
4.
contact ( means "normally closed,
NC
open").
Plug the terminal block into the relay contact and use a 2.5-mm flat-blade screwdriver
5.
to tighten the screws on the face of the block.
Attach the other end of the wires to the external device.
6.
If attaching a reporting device for the other kind of alarm, repeat the procedure.
T4000 Connector Interface Panel (CIP) Description on page 27
Overview of Connecting the T4000 Router to External Devices on page 111
To connect the router to one or two external clocking devices, connect a cable with RJ-48
connectors to one of the
EXTERNAL CLOCK INPUTS
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Plug one end of the cable into the appropriate
2.
SCG.
Plug the other end of the cable into the T1 external clocking device.
3.
Repeat the procedure for the other
4.
Verify that the LED for each port is lit steadily green.
5. LINK
Configure the port. See the
6.
.
Issue the
7. show chassis synchronization
user@host> show chassis synchronization
user@host> show chassis synchronization
Clock Synchronization Status :
Clock module on SCG 0
Current state
Current clock state
Chapter 12: Connecting the T4000 Router to External Devices
means "common," and (
C
ports on the SCG.
EXTERNAL CLOCK INPUTS
EXTERNAL CLOCK INPUTS
statement for M Series and T Series in the
synchronization
command to check the status of the port.
: master
: locked to external-a
means "normally
NO
port on the
port on the SCG.
115