User's Manual

Innovator CU5-1800BTD/BRD ATSC Transmitter/ System Set Up Procedure
Regenerative Translator
Instruction Manual, Rev. 0 60
Figure 13A: (A5) ALC Board (1308570)
ALC Board Set-Up, Forward and Reflected Power Calibration for CU5, CU30,
CU50, CU100 and CU125 Systems
NOTE: If your system is a CU250 or higher power, refer to the next section for the
forward and reflected power calibration procedures.
Refer to Figure 13A. Locate (A5) the ALC Board (1308570), in the preset the
Overdrive Threshold pot R38 full CW and set R62, Manual Adjust, and R75, ALC
Adjust, full CCW.
Switch S1 to Manual Gain, and increase the output power to 100% using R62.
Calibrate the system output power for 100% using R23, the Forward Calibration pot,
on the Output Detector Board. Refer to Figure 14.
Figure 14: (A7) Output Detector Board (1308685)
R38
OVERDRIVE
THRESHOLD
R23
FORWARD
CAL ADJ
R7
REFLECTED
CAL ADJ
S1
AUTO/MAN
R75
ALC ADJ
R62
MAN ADJ
J4