User Manual

IDentity Flex Hardware Manual – Installation sirit
Version 2.3 Page 41
MULTIPLE READER INSTALLATIONS
Installations that utilize more than one reader with adjacent lanes close to other
readers require synchronization. Synchronization allows all separate readers to
transmit simultaneously so that they do not interfere with each other.
Synchronization is accomplished by connecting the reader systems in a daisy
chain fashion where a Previous-to-Next convention is established.
Once connected, the reader system automatically determines which reader
system will generate the synchronization signal and become the master. Slaves
will receive and respond to the synchronization signals. If the readers are not
synchronized, the transmitted signals may interfere with one another, preventing
tag reads.
Separate readers with adjacent lanes must be synchronized. Two or more
separate systems with their antennas closer than 100 feet must be synchronized.
All sync cables are shielded twisted pairs (recommended is use of AWG 18 or
20). The sync cables are connected to terminals labeled “SYNC”.
4
3
2
1
4
3 3
4
1
2
Sync.
Connector
Sync.
Connector
Sync.
Connector
Twisted-Pair cable between readers
DWG-IDFLEX-SYNC-FIG6.2
1
2
Terminating jumpers are IN at readers on the end of the Sync line
Figure 3.14 – Multiple Reader System Sync Connections