Clocking Ports On The Acx1000 And Acx1100 Router; Figure 11: Sample Output Alarm-Reporting Device; Figure 12: Sample Input Alarm-Reporting Device - Juniper ACX1000 Hardware Manual

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Clocking Ports on the ACX1000 and ACX1100 Router

Copyright © 2013, Juniper Networks, Inc.

Figure 11: Sample Output Alarm-Reporting Device

+ 24 - 72
VDC
Output Alarm
Output Alarm
Contact 2 (REF)
Contact 1 (NO)
Figure 12 on page 19 shows an example of a wiring diagram for a simple input
alarm-reporting device. In this case the push button switch is an alarm sensor that triggers
an input alarm when a door-open condition occurs.

Figure 12: Sample Input Alarm-Reporting Device

+ 24 - 72
VDC
Input Alarm Input Alarm
Contact 1 (NC) Contact 2 (REF)
Alarm Contact Port Pinouts for ACX1000 and ACX1100 Routers on page 131
The clocking ports acquire the clock source and synchronize communication over
time-division multiplexing (TDM) interfaces in the router. The clocking ports distribute
a synchronized clock signal throughout the router by locking onto a clock signal originating
from an internal clock source or by connecting to an external clock source.
The reference clock inputs can be T1/E1 line clocks, Ethernet recovered clocks, IEEE
1588v2 recovered clocks, or xDSL NTU-R timing. Externally available reference clocks
are BITS T1/E1 rate clocks, 1 pulse per second (PPS), and 10 MHz. The four SubMiniature
B (SMB) connectors on the front panel of the router connect to external clock signal
sources. The clocking ports provide the synchronized output clocks from any one of the
above reference inputs based on the clock's priority.
Chapter 2: ACX1000 and ACX1100 Hardware Components
Push button switch
19