Cambium Networks PTP 820 Series, User Manual, Page: 1101 / 1149

Chapter 28: Pin-Outs and LEDs – PTP 820F Synchronization Interface LEDs and Pin-Outs – PTP 820F
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Synchronization Interface LEDs and Pin-Outs – PTP
820F
PTP 820F includes an RJ-45 synchronization interface for T3 clock input and T4 clock output. The interface is the
lower RJ-45 interface in a pair of interfaces labeled MGMT/SYNC.
Synchronization Interface Pin-Outs
Table 342 Synchronization Interface Pin-Out Diagram
RJ45 Pin no. Description
1 T3_IN_N
2 T3_IN_P
3 1PPS_P
4 T4_OUT_N
5 T4_OUT_P
6 1PPS_N
7 ToD_P (or PPS_IN_P)
8 ToD_N (or PPS_IN_N)
Synchronization Interface LEDs
The synchronization interface contains two LEDs, one on the upper left of the interface and one on the upper right
of the interface:
•
T3 Status LED – Located on the upper left of the interface. Indicates the status of T3 input clock:
o
Off – There is no T3 input clock, or the input is illegal.
o
Green – There is legal T3 input clock.
•
T4 Status LED – Located on the upper right of the interface. Indicates the status of T4 output clock:
o
Off – T4 output clock is not available.
o
Green – T4 output clock is available.
o
Blinking Green – The clock unit is in a holdover state.