User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Unpacking, Installation &
ATSC Transmitter/Regenerative Translator Maintenance
Instruction Manual, Rev. 1 19
Figure 2: Cabinet Slides
AC Input Connections
The CU0TD/RD-1, CU0TD/RD-2 and CU0TD/RD-3 single drawer systems will operate with
an input voltage of 85-253VAC. The CU0TD/RD-4 single drawer systems operate on 185-
253VAC. The customer should provide a single point disconnect for the main AC input
connection to the transmitter. Check that the AC switch, located on the rear of the drawer
above the AC power jack, is OFF. Connect the AC power cord supplied with the drawer from
J6 on the rear of the drawer to the AC source. If your system has the optional ASI to S310
Converter, check that it is connected to the AC source. If your system contains an
optional preamp check that the 24VDC power supply is connected to the preamp and an
AC source.
If your system is a CU1TD/RD-1, CU1TD/RD-2 or CU1TD/RD-3, it also contains one
amplifier drawer. In CU2TD/RD and higher power systems, multiple amplifier drawers are
included. Each amplifier drawer is configured for 230 VAC operation only. Check that the
ON/OFF circuit breaker in the CU1TD/RD-1 amplifier drawer, or circuit breakers in N+1
amplifier drawers, CU1TD/RD-2 or CU1TD/RD-3, located on the rear panel on either side
of the AC power jack, are OFF. Connect the AC power cord supplied with the drawer from
J10 on the rear of the drawer to the 230 VAC source. Refer to Table 1 for the typical
voltage and current requirements for CX Systems.
If the system is mounted in a rack, an AC distribution box wired to a quad receptacle box is
used to connect the AC to the individual drawers. The AC distribution box is mounted on
the upper right side of the rack accessed through the back of the rack. The main AC input
for a C1TD-1 transmitter is, 195-253VAC, at least 10Amps, 50/60Hz. The customer should
provide a single point disconnect for the main AC input that connects to the transmitter.
The AC input lines connect inside the AC distribution box by first removing the two screws
that hold the cover plate to the front of the AC distribution box. Then connect the three
wire main AC input to the input lugs, L1 to L1, L2 to L2 and Ground to Ground. The power
amplifier drawer and the quad receptacle box connect through AC power cords directly to
the AC distribution box. The AC power to the optional receiver drawer and the
exciter/driver drawer are connected through AC power cords that plug into the quad
receptacle box.
If the system is mounted in a cabinet, an AC distribution panel is supplied to connect the AC
to the individual drawers. The AC distribution panel is mounted facing the rear of the
cabinet and accessed through the back of the cabinet. The main AC input for a CU2TD
transmitter is, 195-253VAC, at least 30Amps, 50/60Hz. The customer should provide a
single point disconnect for the main AC input that connects to the transmitter. The AC input
lines connect to the AC distribution panel by first removing the four #8 screws that hold the
cover plate to the front of the AC distribution panel. Then connect the three wire main AC
input to the input lugs located at the top left of the AC distribution panel, L1 to L1, L2 to L2
and Ground to the Ground lug on the left. The AC distribution panel in a CU2TD has three
circuit breakers that distribute the AC to the individual drawers, which are the Exciter and