Advanced Programming
Safety Precautions
FEC – Forward Error Correction -
Using FEC codes enables communications to achieve the same
level of transmission reliability, quantified by the BER, at lower output power levels.
Guard Interval
- Guard intervals are used to ensure that distinct transmissions do not interfere with
one another. The purpose of the guard interval is to introduce immunity to propagation delays, echoes
and reflections, to which digital data is normally very sensitive. Example: By changing the FEC from
¾ to ⅞ you are increasing the bandwidth available within the channel allowing more data available for
transmission.
Constellation
- Countries around the world use different constellations for transmission of digital
TV signals. The setting are either 16 QAM or 64 QAM and are pre-set as per region within in the
HD1000DM / HD2000DM.
Bandwidth
- Countries around the world use different bandwidth for transmission of digital TV signals.
The setting are either 6, 7 or 8 MHz and are pre-set as region specific within in the HD1000DM /
HD2000DM.
LCN Mode
– Allows change of the LCN mode (EACEM, APN, ITC, NorDIG) for different regions.
Aspect Ratio
– Allows change of size of the picture being displayed on the TV. Default is set on wide
screen 16:9 but can be changed to 4:3 if required.
RF Output Level
– dB level of output of RL-HD1000DM / 2000DM launched at 87dB and
adjustable via “ATTENUATION” mode in the Settings menu.
• Do not
apply power to the digi-MOD HD until all components have been installed and all wiring has been properly
terminated. Failure to do so may result in damage to the product and void manufacturer’s warranty
• Do not
attempt to terminate, change or un-install any wiring without first disconnecting the power to the
digi-MOD HD.
• Do not
expose any component to moisture. Doing so can create electrical hazards or render the component
unusable. Exposure to moisture will also void the warranty on the system.
• Note:
-
Do not
connect the modulator to the power if the power cord is damaged.
-
Do not
plug the modulator into the mains supply until all cables have been connected correctly.
-
Do not
cut the cord.
• Avoid
placing the digi-MOD HD next to central heating components and in areas of high humidity.
• Do not
cover any digi-MOD HD elements that could obstruct the ventilation slots and cause overheating.
• If the digi-MOD HD has been kept in cold conditions for a long time, keep it in a warm room no less than 2 hours
before plugging it into the mains.
• Do not
place digi-MOD HD on top or underneath a PVR Device, as this could cause overheating.
IMPORTANT NOTE:
• You must re-scan the TV once setting has been changed or the TV may not display
the picture and sound correctly.
• Once programming is complete it is recommended that the system be reset by
pressing the reset button on the face of the module.
