User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Unpacking, Installation &

ATSC Transmitter/Regenerative Translator Maintenance

Instruction Manual, Rev. 1 23

Figure 4: Rear View Amplifier Drawer. NOTE: Some amplifier drawers only has a CB1

circuit breaker.

Table 3: Connections for the Amplifier Drawer

Port Type Function Impedance

J1 N RF Input: On Channel RF from CU driver drawer 50Ω

7/16”

(1.1cm)

Din

RF Output: On Channel RF Output 50Ω

J3 IEC AC Input: AC input connection to 230VAC Source N/A

J4 9 Pos D

Remote: Amplifier Control Interface

(Connects to J11 on the exciter/driver drawer)

N/A

J5 RJ-45 Serial data N/A

Front

Panel

BNC

RF Sample: Output Sample from Combiner thru Control

Board. In a CU500, the sample level is approximately 70dB

down from the output power level of the drawer.

50Ω

Refer to Figures 3, 3A and 4, and Tables 2, 2A and 3 for detailed information on the jacks

and connectors. Connect the On Channel RF Input (RD), –78 to –8 dBm, or the SMPTE-

310 Input (TD), to the 50Ω BNC input jack J1, located on the rear panel of the CU5 thru

CU125 systems and the driver drawers for the CU250 and higher power systems. The

input to J1 can be from the ASI to S310 converter, the Axciter Drawer or any other source

of a SMPTE-310 signal.

If used, connect the external 10 MHz reference input to the 50Ω BNC 10 MHz input jack J6

located on the rear panel of the CU0TD/RD-1 thru CU0TD/RD-5 and the driver for the

CU1TD/RD-1 and higher power systems. If used, connect the external 1 PPS reference

input to the 50Ω BNC 1 PPS input jack J7 located on the rear panel of the CU0TD/RD-1

thru CU0TD/RD-5 and the driver for the CU1TD/RD-1 and higher power systems. If your

system contains the Optional Internal GPS Kit, the output of the GPS Antenna connects to

the J5 TNC connector on the rear panel of the CU0TD/RD-1 thru CU0TD/RD-5 and the

driver for the CU1TD/RD-1 and higher power systems. This kit supplies 10 MHz and 1 pps

references for use in the CU0TD/RD-1 thru CU0TD/RD-5 and the driver for the CU1TD/RD-

1 CXB drawer in higher power systems.

CB1

CB2