User's Manual

Screen Service SDT ARK 1 ECHO Operations
Jan, 2012 v 1.ATSC_FCC Page 3 - 51
3.5 PRE-CORRECTION TOOL
The ARK1 system provides a pre-correction tool for both Module&Phase and AM/PM output
signal pre-correction.
Remember to save curves changing before closing the connection to port 5000. At every
working session open
Note: the operation of uploading and downloading pre-correction curves moves a large
amount of data from and to the device. The use of these tools over low badwidth, not stable
or high distances netwoks could cause frequently time-out disconnections and it is not
reccommended.
3.5.1 Module&Phase
Click on MOD. PHA. button icon, highlighted in the nex figure, to modify the complex filter
curves for linear pre-correction.
Figure 14. Phase and module window