User's Guide Part 1

Table Of Contents
Chapter 3: System planning Configuration options for TDD synchronization
Cluster with PTP-SYNC and GPS receiver
Each link requires one PTP-SYNC unit. Each site requires one compatible GPS receiver.
Collocated PTP-SYNC units are connected together in a daisy-chain. Between two and ten PTP-
SYNCs may be chained in this way. Use this configuration where a site contains collocated
TDD master ODUs in an extended network and where multiple sites have TDD master ODUs
(Figure 50).
The wireless configuration settings are:
Master Slave Mode =
Master
(all ODUs in cluster).
TDD Sync Device =
PTPSYNC
(all ODUs in cluster).
Cluster Master Slave =
Cluster Master
(first ODU) and
Cluster Slave
(others).
PTP Sync Site Reference =
GPS/1PPS External
(all ODUs in cluster).
Figure 50
TDD synchronization configuration cluster with PTP-SYNC and GPS
Cluster
Master
ODU
GPS
receiver
PTP-SYNC
GPS/
SYNC IN
SYNC
OUT
PIDU
IN
ODU
OUT
ODU
LAN
AC+DC Power
Injector
AC In
Customer
LAN
AC supply
Outdoor CAT5e cable, gel-filled,
shielded with copper-plated steel.
CAT5e cable, foil or braid screened,
with screened connectors.
CAT5e cable, unscreened or
screened.
Ground cable.
Cluster
Slave
ODU
PTP-SYNC
GPS/
SYNC IN
SYNC
OUT
PIDU
IN
ODU
OUT
ODU
LAN
AC+DC Power
Injector
AC In
Customer
LAN
AC supply
Cluster
Slave
ODU
PTP-SYNC
GPS/
SYNC IN
SYNC
OUT
PIDU
IN
ODU
OUT
ODU
LAN
AC+DC Power
Injector
AC In
Customer
LAN
AC supply
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