SOLH264TX Broadcast Transmitter
H264TX, H264ENGTX, H264ENC
UNCLASSIFIED
Part A - User Guide
DS000091
Rev 1.2 2013-05-02
UNCLASSIFIED
Page 10-75
Extra long
range 1
2.5MHz, FEC2/3, Guard 1/16, 16QAM
4.8Mbps
-94dBm
Extra long
range 2
2.5MHz, FEC2/3, Guard 1/16, QPSK
2.4Mbps
-99dBm
Note: All narrowband based range modes are a licensed feature. If you are not licensed for
a mode you’ll be able to select it but the unit will simply drop into off mode automatically.
10.6.3
DVB-T Settings (2)
On the SOLO4 Transmitter Control window in the Bandwidth mode combo box, it is
possible to select DVBT mode. This uses a wider Bandwidth of 6, 7 or 8MHz.
When selected, this next set of DVBT parameters now become important. (They are
ignored when we are working in narrowband or Ultra narrowband).
DVB-T stands for Digital video broadcasting, terrestrial. It’s the same standard that’s
used if your digital TV at home gets its signal from a conventional antenna.
Unit Parameter Options
Notes
DBVT FEC rate
1/2, 2/3, 3/4, 5/6
and 7/8
Default is 1/2.
The forward error correction (FEC) rate which is
being applied to the DVBT mode in use.
Think ‘data bits/all bits’
1/2 means 1 bit out of 2 bits is data and therefore
1 bit is used for error correction.
Little user data means less picture quality, but
more error correction means a more robust signal
and therefore more range.
7/8 means 7 bits out of 8 bits are data and
therefore 1 bit is used for error correction.
More user data means better picture quality, but
less error correction means less robust signal and
therefore less range.
DVBT guard
interval
1/32, 1/16, 1/8
and 1/4
Default is 1/32.
The guard interval which is being applied to the
DVBT mode in use.
The guard interval is a deliberate extension of the
RF symbol period to give immunity to reflections.
1/32, short extension, deals with fast reflections,
