User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Unpacking, Installation &
ATSC Transmitter/Regenerative Translator Maintenance
Instruction Manual, Rev. 1 24
In Translator (RD) systems there is a SMPTE-310 loop-thru from the output of the
Demodulator Board at J4, mounted on the rear panel of the transmitter or driver drawer,
to the input to the Modulator Board at J5, mounted on the rear panel of the transmitter or
driver drawer. There is a jumper installed from J4 to J5. To feed SMPTE-310 directly to
the Modulator Board, remove the jumper and insert SMPTE-310 into J5. This is only used
in Translator (RD) systems not Transmitter (TD) systems.
The digital RF ON Channel output of the CU0TD/RD-1 thru CU0TD/RD-5 and the driver for
the CU1TD/RD-1 and higher power systems is at J9 the 50Ω “N” connector RF output jack
located on the rear panel. In CU0TD/RD-1 thru CU0TD/RD-5 systems, the output of the
drawer at J9 connects to the low pass, digital mask filter and then to the antenna for your
system. In CU1TD/RD-1 and higher power systems, the output of the driver drawer at J9
is connected to J1 the 50 Ohm “N” connector RF input jack located on the rear panel of
the amplifier drawer or to a splitter in multiple amplifier systems. In CU1TD/RD-1,
CU1TD/RD-2 or CU1TD/RD-3 systems, check that the system power metering interface
cable is connected from J11 the 9 position “D” connector located on the rear panel of the
driver drawer to J4 the 9 position “D” connector located on the rear panel of the amplifier
drawer. This cable provides the control, status and operating parameters of the amplifier
drawer to the driver drawer. In CU2TD/RD and higher power systems the output of the
driver drawer is split and connected to J1 the “N” type connector RF input jack on the
amplifier drawers. Check that the system power metering interface cable is connected
from J11 the 9 position “D” connector located on the rear panel of the driver drawer to J9
the 9 position “D” connector located on the System Metering Board. Also check that the
serial connection is cabled from the RJ-45 connector J13 on the driver drawer to the RJ-45
connector J1 on the system metering board. The system metering board provides serial
RJ-45 connections at J2 and J5 that are cabled to the RJ-45 serial port J5 on the rear
panel of the amplifier drawers. These cables provide the control, status and operating
parameters of the amplifier drawers to the driver drawer through the System Metering
Board.
The digital RF ON Channel output of the amplifier drawer is at J2 the 50Ω “7/16” (1.1cm)
Din connector RF output jack located on the rear panel that connects directly to the digital
mask filter, the low pass filter and then to the antenna for your system in single amplifier
systems. In multiple amplifier drawer systems the outputs of the drawers connect to a
combiner and then the digital mask filter, the low pass mask filter, the 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 overtemperature 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.
Maintenance
Innovator CX Series Transmitters are designed with components that require little or no
periodic maintenance except for the routine cleaning of the fans and the front panels of the
modules and the periodic check of general tightness of hardware.
It is recommended that periodically, the time interval depends on the amount of movement
the cabinet receives, all mounting hardware, holding drawer slides, shelving and mounting
plates inside the cabinet are checked for tightness. All screws and bolts that are accessible
should be tightened initially when the transmitter is received and periodically thereafter if
the transmitter is moved by vehicle. All coaxial connectors, hard-line connections and
hardware holding combiners, splitters, or any other mounted items should be checked and