Juniper MX104 Hardware Manual page 166

MX104 3D Universal Edge Router Hardware Guide
142
which is not provided. Use the gauge of wire appropriate for the external device you are
connecting.
To connect an external device to an alarm relay contact:
Prepare the required length of wire with gauge between 20 AWG (0.52 mm
1.
2
AWG (2.08 mm ).
Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
2.
ESD points on the chassis.
While the terminal block is not plugged into the relay contact, use a screwdriver to
3.
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 screwdriver to tighten the
5.
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.
means "common," and
C NO
Copyright © 2017, Juniper Networks, Inc.
2
) and 14
means "normally