<< Click to Display Table of Contents >> Navigation:  Troubleshooting > Problem - Not appearing as a digital TV channel

 

Cause - RF level too high or too low - If the RF level is too high or low and the TV can not produce an image.

 

1. Adjust the RF out level in the MOD300, go to :-

 

Setup Modulator > RF out. See the Menu System - NOTE if the MOD300 is dBm level range is -31 dBm ~ 6 dBm

 

This can be adjusted on a trial and error process so you may have to try various RF levels checking the result each time.

 

It is recommended to adjust the dB level in segments of 3.

 

Re-tune the TVs after making the adjustment.

 

2. Check the RF output level of the MOD300 compared with the TV aerial signal using a digital TV (DVB-T) signal strength finder.

 

The TV may not be able to decode the MOD300 if there is a large difference in strength between the two signals.

 

 

 

Cause - Amplifier installed between the modulator and the TV - The MOD300 does not support AC/DC pass through so the voltage is blocked out.

 

When using a masthead amplifier it must be installed after the MOD300. See the Masthead Amp installation.

 

 

 

Cause - Incompatibility - The MOD300 outputs video as MPEG-4. Ensure the TV supports MPEG-4 as some TVs only support MPEG-2.