User's Manual

12
PROGRAMMING
DVBT Service Name
DVB-T service name is a place to assign a name for the DVB-T configuration. Press Apply to
save the new name.
DVBT FEC Rate
DVB-T FEC rate selects forward error correction rates in the wideband DVB-T modes. Options
are 1/2, 2/3, and 3/4, with 1/2 giving best range and 3/4 possibly giving better video quality
under certain conditions, recommended default is 1/2.
DVBT Guard Interval
DVB-T guard interval selects guard intervals in the wideband DVB-T modes between 1/32 and
1/4. Use the smallest guard interval that will allow reliable low error rate communications, this
parameter may need to be adjusted when the link is relocated; the recommended default is
1/16.
DVBT Modulation
DVB-T modulation selects the modulation used in the wideband DVB-T mode. Modulations
QPSK, 16QAM, or 64QAM can be selected. QPSK will give best distance and in most cases very
good video quality and low latency.
DVBT Spectrum Inversion
DVB-T spectrum inversion allows flipping the modulated spectrum to compensate for spectrum
inversion that may take place on the receiver side due to high side LO injection.
DVBT 4 KHz Offset
DVB-T 4 KHz offset is not normally used but might improve BER in cases where the TX
upconverter I/Q balance is poor.