User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD ATSC Board Descriptions
Transmitter/Regenerative Translator
Instruction Manual, Rev. 2 121
The LEDs are Power, which indicates +12 VDC is connected to the converter, FIFO
ERROR, which indicates an overflow or underflow condition in the input buffer, S310
Lock, which indicates the converted S310 signal is in a locked condition, and ASI Lock,
which indicates the recovered ASI signal is in a locked condition.
ASI to 310 Conversion Board, Non-SFN (1311219)
The ASI signal is input to the ASI to S310 conversion board via J1. U2 de-serializes the
ASI input signal into a parallel byte stream. The parallel byte stream is clocked into U6
which buffers and converts it to a valid S310 bi-phase encoded signal. Null packets are
added or dropped during this process to obtain the valid 19.393 Mb/s output. U6 is also
responsible for re-stamping the PCR clock. The final S310 output of the board is at J5.
ASI to 310 Conversion Board, SFN (1309764)
The ASI signal is input to the ASI to S310 conversion board via J1. U2 de-serializes the
ASI input signal into a parallel byte stream. The parallel byte stream is clocked into U6
which buffers and converts it to a valid S310 bi-phase encoded signal. For SFN
operation the ASI payload must be 19.392568 Mb/s +/- 2 ppm. A 38.785317 MHz
VCXO locks to the exact S310 bit-rate using a Digital PLL. This method ensures the
extracted S310 stream is frequency locked without modifying its content i.e. add/drop
null packets, PCR restamp, etc. The final S310 output of the board is at J5.
(Optional) K-Tech Receiver
NOTE: If your system contains an (Optional) K-Tech Receiver, information on the
receiver is contained in the separate manufacturers supplied instruction manual.