User's Manual

Digital ATSC Exciter-Modulator System Chapter 2,
Installation and Operating Instructions
Axcera Axciter, Rev. 0 18
Channel Offset Example
CHANNEL OFFSET
Enable
Selecting this option will change the transmitted frequency by the selected
offset value. (Channel offsets are used to minimize co-channel or adjacent
channel interference.)
Disable
Selecting this option will set the transmitted frequency to the standard value
for the channel in use (pilot 309.440559 kHz above the lower channel edge.)
This display allows channel offset adjustment for the ATSC mode of the
Axciter.
Channel offsets are used to minimize interference between co-channel and/or
adjacent channel signals. Selection of a type of channel offset is dependent on
the kind of interference being caused or received. Check with the appropriate
regulatory body (FCC) and review your DTV channel assignment before
beginning transmission with a channel offset.
DTV/DTV
+19403.07Hz
-19403.07Hz
This offset frequency is chosen to minimize co-channel interference between
two DTV signals.