User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Unpacking, Installation &
ATSC Transmitter/Regenerative Translator Maintenance
Instruction Manual, Rev. 2 26
NOTES:
1) If your transmitter (TD) system contains an Optional ASI to S310 Converter, connect
the ASI output of the STL to the ASI in jack on the rear panel of the converter. Connect
the SMPTE-310 Output from the SMPTE 310 Out jack on the rear panel of the converter
module to the input jack J1 on the rear panel of the CU0TD/RD-1 thru CU0TD/RD-5
drawer or the driver drawer for the CU1TD/RD-1 and higher power systems.
2) If your transmitter (TD) system contains an Optional K-Tech receiver, connect the RF
from the receive antenna or one output of the splitter to the input jack J1 on the rear
panel of the K-Tech receiver. Connect the SMPTE 310 Out jack J2 on the rear panel of
the K-Tech receiver to the input jack J5 on the rear panel of the CU0TD/RD-1 thru
CU0TD/RD-5 or the driver for the CU1TD/RD-1 and higher power systems.
3) If the system contains the optional K-Tech back up system, the K-Tech receiver is
bypassed by using the second output of the splitter that connects to J1 on the rear panel
of the CU0TD/RD-1 thru CU0TD/RD-5 or the driver drawer and connecting a jumper
from J4 to J5, after removing the cable from the K-Tech receiver, on the rear panel of
the CU0TD/RD-1 thru CU0TD/RD-5 or the driver drawer. This configuration uses the
8VSB demodulator board in the CU0TD/RD-1 thru CU0TD/RD-5 or the driver drawer to
produce the SEMTE-310 signal.
4) If the system contains an optional preamp it connects to the output of the receive
antenna and to J1 on the rear panel of the CU0TD/RD-1 thru CU0TD/RD-5 drawer.
5) RF feedback sample lines must not be disturbed when adaptive pre-correction is
enabled. If a sample line is removed, the appropriate pre-correction mode must first be
disabled and only re-enabled after the feedback signal is re-connected. RF feedback
sample #1 is feedback for the non-linear pre-corrector system and sample #2 is used
for the linear pre-corrector system.
6) The adaptive pre-correction systems are likely to be significantly affected if the sense
port is moved to another coupler port with a different level or if a sample level is
changed significantly (a few dB). If the linear pre-corrector system is exposed to this
scenario it may generate a notable ripple in the output that may translate into an
increase (or decrease) of the measured RMS level. Should this situation occur, the only
way to restore proper operation is to reset the linear corrector using the controller's 'Set
To Neutral' command or the web interface's 'Reset Current Curve To Factory' command
and allow the pre-corrector system to start over again.
CX Driver/Exciter Input Connections
Connect the On Channel RF Input (RD) –78 to –8 dBm signal, or the ASI Input or the
SMPTE-310 Input to the 50Ω BNC input jack (J1 or J5) located on the rear panel of CX
drawer.
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 CX drawer.
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 CX drawer.