WaveWare Adaptive Serial LED Clock - Manual (Page 10)

ALPHA Serial Clock Manual
4
Network configurations—Adding serial clocks to an Alpha
®
network
Alpha® serial clocks can be connected together with each other or in
a mix of Alpha
®
signs. Also, like an Alpha
®
sign, an Alpha
®
serial clock
must be terminated when it is the last device on a network.
In a network, one clock (or a PC attached to the network) is used to
synchronize all the other clocks to the same time. In an network
composed of all Alpha
®
serial clocks, one clock should be set to master
mode and the other clocks set to slave mode
Table 1: Networking Alpha
®
serial clocks
(Example 1 — A network of all clocks)
In this example all-clock network, one of the clocks must be set to master mode. All the other clocks on the network
must be set to slave mode. Also, the first and last clocks on the network must be terminated.
Item Part # Description
A 1088-9107
End-of-line (EOL) terminator. (An EOL must be plugged into the left—as you face the
back of the clock—RJ11 phone jack.)
B — Ferrite (ferrite end towards sign)
C
1088-8624 8 foot, 4-conductor RS485 cable
1088-8636 1 foot, 4-conductor RS485 cable
D 4331-0602 Modular Network Adapter
E 1088-8000 RS485 cable
A
A
Alpha
®
serial clocks
D
To right
phone jack
E
B
C
To either
phone jack
To either
phone jack
To right
phone jack
D
B
C