User's Manual

18
Submit button when you are satisfied with the result. Next, click on the
Modulation button in the menu bar at the top of the screen.
MODULATION SETUP SCREEN
Modulation setup determines the bit rate that the transmitter can send to
the receiving station for each preset. Lower bit rates will work better in
situations where extreme fades, interference, or multipath are present.
Higher bit rates are not as robust; however, they may be required for
highest quality HD transmission.
The maximum available bit rate is directly related to the modulation type
and the channel bandwidth. The following tables provide a complete
summary of modulation settings for both 6 and 8 MHz DVB-T bandwidths
as a function of bit rate. In order to comply with FCC emission standards,
a 6 MHz DVB-T bandwidth is the maximum allowed in an 8 MHz wide RF
channel, while an 8 MHz DVB-T bandwidth can be used in a 10 MHz or
wider RF channel. A 10 MHz DVB-T bandwidth can support a total bit
rate 33% higher than an 8 MHz channel, if all other factors are equal.