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Doc ref: xMOD200
Trouble Shooting
The table below describes common problems you may encounter when using the MOD200
along with the most common solutions for rectifying the problem.
Problem
Possible Cause
Solution
Modulator not
appearing as a
digital TV channel
Channel Number
The MOD200 should automatically appear as channel 800.
Signal Loss
The gain is too low due to transmission distance or interference
from equipment. Increase the RF Level in the Modulator menu under
‘RF Setting’.
MPEG Code rate
too low
The code rate is defined by a combination of the Bandwidth,
Constellation, FEC and Guard Interval. When using DVB equipment
the code rate must be at least 22MHz. Check the Code Rate table on
page 12 to see if the current combination produces a signal of at
least 22MHz.
MPEG Compatibility The MOD200 outputs video as MPEG-4. Ensure your TV supports
MPEG-4 as some TVs only support MPEG-2.
Incorrect ONID
In the UK the ONID must be set to 9018 (09018). This can be set in the
‘Network Setting’ menu under ‘Original Net’.
Modulator
appearing as a
digital TV channel
but no image
displayed
Resolution from
input device not
supported by TV
The MOD200 outputs the same resolution as it receives. For example,
if the resolution from the original input device is 1080p the MOD200
will output a 1080p signal. If the TV only supports a maximum of
720p the new channel will still be discovered but no image will be
displayed. In this case you will need to change the resolution of the
input device to one which the TV supports.
No or poor signal
when using a
masthead amplifier
RF Level too high
If the RF Level is too high when it is amplified the TV is swamped and
can not produce an image. Reduce the RF Level in the Modulator
menu under Advanced Config. This is a trial and error process so you
may have to try various RF levels checking the result each time.
Amplifier installed
before modulator
The MOD200 does not support AC/DC pass through so the voltage
is blocked out. When using a masthead amplifier it must be installed
after the MOD200 as shown on page 7.
‘Keyboard Locked
No Signal In’
displayed on LCD
screen
Loose connections
Check the connections to both the MOD200 and signal source are
correct and secure.
Faulty cable
Try a different cable or test the cable used with other equipment to
make sure it isn’t damaged or faulty.
Resolution not
supported
The resolution of the signal from the input device may not be
supported by the MOD200. Supported resolutions are listed in the
specifications on the rear cover.
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