Electroline Control Unit IV - Connecting the Control Unit to the CATV Network; Connecting the Control Units Power Cord; Connecting the Control Units Test Ports

Control Unit IV Reference Manual Installation
529-0004 Ver.3 2-11
2.7.2 Connecting the Control Unit to the CATV network
The Control Unit transmits subscriber data to the CATV network from its RF output, which
is connected to the headend’s main combiner. The FSK carrier will then be injected into the
CATV network. Use a 75-ohm coaxial cable for this connection.
To connect the Control Unit to the cable network:
1. Connect one of the coaxial cable’s male connector to the F-connector labeled
RF OUT
on
the rear panel of the Control Unit.
2. Connect the other end of the coaxial cable to the headend combiner or directional
coupler. Make sure that the amplitude of the Control Unit’s carrier is adjusted to the
recommended level, which is 15 dB below the adjacent video carriers.
2.7.3 Connecting the Control Unit’s test ports
The standard configuration of the
TEST OUT
output is to connect it to the
TEST IN
input on the
Control Unit and to connect a loop from the network (if applicable) to the
RF IN
input. The
loop from the network is optional (see step 2).
1. On the Control Unit, run a short coaxial cable jumper from the
TEST OUT
connector to the
TEST IN
connector.
2. Connect a coaxial cable from the network to the Control Unit’s
RF IN
connector. Make
sure the signal level on this cable is within the Control Unit’s input range (see label).
This loopback connection enables the Control Unit to monitor its own signal from the
network. Skip this step on the backup unit in a redundancy system.
2.7.4 Connecting the Control Unit’s power cord
1. Make sure that the Control Unit’s on/off switch is in the off position (see the rear panel
diagram in Chapter 1).
2. Connect the female end of the power cord to the three-pin power connector on the rear
panel of the Control Unit.
3. Plug the male end of the power cord into an AC power source (e.g. wall outlet).
4. Turn on the Control Unit by putting the on/off switch in the on position. If the Control
Unit is receiving AC power, the
POWER
LED on the front panel of the Control Unit will
be lit.