User's Guide Part 1

Table Of Contents
Chapter 3: System planning Configuration options for TDD synchronization
Cluster with PTP-SYNC and no GPS receiver
Each link requires one PTP-SYNC unit. PTP-SYNC units are connected together in a daisy-chain.
Between two and ten PTP-SYNCs may be chained in this way. One ODU is designated as a
cluster master. Use this configuration where all master ODUs are collocated at a single site. As
this configuration does not require a GPS receiver, it provides additional flexibility, particularly
in applications requiring rapid deployment (Figure 51).
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 =
Internal
(all ODUs in cluster).
Figure 51
TDD synchronization configuration cluster with PTP-SYNC and no GPS
Cluster
Master
ODU
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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