User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Unpacking, Installation &
ATSC Transmitter/Regenerative Translator Maintenance
Instruction Manual, Rev. 2 31
HPA Output Connections
The amplifier drawer digital RF On-Channel output is at the (J12) 50Ω “7/16” (1.1cm)
DIN RF output jack, located on the rear panel of the drawer. The RF output jack is
connected to the low pass filter, digital mask filter, then to the antenna for your system
in single amplifier systems.
In multiple amplifier drawer systems, the outputs of each drawer is connected to a
combiner and then the low pass filter, digital mask filter, output coupler and finally to
the antenna for your system.
The output coupler provides a forward and a reflected power sample that are cabled to
the System Metering Board at J8 reflected and J3 forward. Also connected to the
system metering board at J10-6 & 9, is the output of the over-temperature switch
mounted to the reject load that is used as the reject interlock by the system. The
samples and interlock are fed through J9 on the system metering board to J11 on the
driver drawer. This completes the connections of the system.
Connecting your Transmitter to a TCP/IP Network
To connect your transmitter to a TCP/IP Network you must set up the IP address, subnet
mask, and gateway values of both the Ethernet controller and the modulator. DHCP is
not available for the Ethernet controller but it can be turned on for the modulator
controller. However, both devices should use static IP addressing so that these values
remain constant after a power cycle. Refer to Figure 54.1.13 on Page 103 for setting up
the Ethernet controller and see Figure 31 on Page 67 for setting up the modulator
Network parameters.
If the transmitter system is pre-wired at the factory and includes a router, the router’s
WAN port should be the connection point to the network. The user must configure the
router’s WAN port for access to the network.
Note: All other devices (Remote Interface panel and CX Exciters) connected to
the router have been configured with a static IP address. The operator can
access the other devices though the router, but the IP addresses must not be
changed. Changing the static IP addresses could prevent communication
between the devices and render the transmitter inoperative.
Contact your local IT administrator for the proper TCP/IP address subnet mask and
gateway settings of your network.