7
3.2
Location
Place the multiplexer in a clear area where you can reach the front
panel for setup and the rear panel to connect the cables. The
multiplexer has an external power supply that requires a properly
grounded 120 VAC outlet. The total power cord length is about 12 feet.
3.3
Setup
Setup of the SRX Host Multiplexer can be done using the front panel
controls and LCD display or by using a terminal connected to the
Network Management port. Front panel operation is covered in Section
4, the Network Management port is discussed in Section 5.
3.4
Connections
3.4.1
Single Host
Connection to the host modem or DSU/CSU is made using the supplied
“Modem to Composite” cable. The host modem or DSU/CSU should be
set for constant carrier operation (RTS forced ON). For information
regarding host computer port connections, see Section 6.
D CB
DSU/CSU 56
INSDCD RTSCTS TxD RxD
SELF
TEST
DIGITAL
L O O P
LOCAL
L O O P
REMOTE
TEST
SELECT
O P T I O N
MODEM READY
LINE ERROR
ACTIVITY
POWER
NEXT
INCR OK!
SRX 8/16 MULTIPLEXER
DCB
To Telco
Modem/DSU
SRX
Host
See Section 6
Modem to Composite Cable
