SELENA
Multifunctional LED Clock
USER MANUAL V32D
KERA TECHNOLOGIES INC. 2013
www.ledclocks.com
33
MASTER—SLAVE SYSTEM WITH RF ( RADIO ) COMMUNICATION
using SELENA WITH INTERNAL RF MODEM and a PC AS THE MASTER.
GPS
WWVB
INTERNET
FIRST SLAVE CLOCK
WITH RF ( RADIO ) MODEM
AND RS232 OR RS485 INPUT
( Option # 724RF and # 725
or # 725232 )
SLAVE CLOCKS
WITH INTERNAL RF ( RADIO ) MODEMS
( option # 725RF )
88:88
88:88
88:88
88:88
OPTIONAL
RS232, USB or RS485
COMMUNICATION
RS-232 (PC) to RS-485
CONVERTER may be
necessary
( option # 901 )
PC COMPUTER with RS232 or USB
serial port and with installed
PC2KERA driver S/W
( option # 721 )
RXIN
RS D.IN
RFTX IN
TXOP
RFRX OUT
RS D.OUT
JU
M
P
E
R
S
R
S
23
2
O
R
R
S
48
5
FR
O
M
P
C
SYNC USING PC
AS THE MASTER
AND BROADCASTER
SYNC USING PC
AS THE MASTER
AND THE CLOCK
AS BROADCASTER
TXD
RXD
GND
RXIN
RS D.IN
RFTX IN
TXOP
RFRX OUT
RS D.OUT
JU
M
P
E
R
S
R
S
23
2
O
R
R
S
48
5
FR
O
M
P
C
TXD
RXD
GND
SYNC USING
RF MODEM FOR
CLOCK AS SLAVE OR
AS THE MASTER
RXIN
RS D.IN
RFTX IN
TXOP
RFRX OUT
RS D.OUT
JU
M
P
E
R
S
R
S
23
2
O
R
R
S
48
5
FR
O
M
P
C
TXD
RXD
GND
NOTE:
NOT ALL TERMINALS AND SIGNALS MAY BE
AVAILABLE IN ALL MODELS OR CONFIGURATIONS.
OTHER SYNC WIRING MODES ARE POSSIBLE.