Forum > Decoders > PVR Decoders > Ghosting on picture
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Old 2017-02-14 , 14:23
abswart abswart is offline
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Default Ghosting on picture

I have a explorer decoder which allows extra viewing to 3 additional points. Two of the additional viewing points have a decoder whilst the 3rd viewing point has an eye which enables it to change one of the decoders. A problem that has cropped up is on the Eye TV picture, which is perfect until the extra decoder in an adjacent room is switched on and a ghosting picture occurs. If the eye decoder is switched off than the decoder channel in the adjacent room is displayed. How do I fix this.
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Old 2017-02-14 , 14:41
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Optimist Optimist is offline
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Welcome :-)

The decoder in the adjacent room (which I will call decoder 1) will have its RF channel number either too close or causing a harmonic disturbance to the RF channel being viewed on the "Eye" TV (sourced from what I will call decoder 2).

Either decoder 1 or decoder 2's RF channel number needs to be changed, and that can't be allowed to create new interference with decoder 3 either (if the setup makes that possible).

This needs to be initially done while viewing it on another type of connection, HDMI or composite, or you won't be able to see what you're doing. Then it needs to be checked on all the TVs using RF connections. Try adjusting it one RF channel number at a time, and normally the lower the number the better the quality will be.

From what you've described you will have some combination of the Explora and 4136 decoders (or just Exploras) and so this is where you'll find the RF UHF channel number setting in the menu on all of them;
Settings \ System Settings \ UHF

BTW, that this is an installation problem, so your thread may be moved by a Mod to the Installation forum section.

Hope it goes smoothly.
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Old 2017-02-14 , 14:42
Geoff D Geoff D is offline
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First step is to confirm how the RF distribution has been done to the 3rd TV viewing point.
Also rather confused about the number of decoders you have. Is it 2 decoders or 3?

Are the RF OUT signals from all decoders combined and then distributed to both decoders? Are you using TV1, TV2 and TV3 and have set the decoders to respond correctly to these viewing environments?

Second, you must ensure that the 2 decoders are not set to use the same UHF channel number and that both decoders are set to PALI. Then the TV at the third point should be set PALI as well, and 2 channels tuned in on the TV one for each decoder.

I suggest you use UHF channels 23 and 25 for best results.
The default for the decoders is channel 63.
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Last edited by Geoff D; 2017-02-14 at 14:50. .
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Old 2017-02-14 , 14:57
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Quote:
Originally Posted by Geoff D View Post
...and that both decoders are set to PALI.
@abswart, that's found in Settings \ User Preferences \ Video & Audio
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Old 2017-02-14 , 15:31
abswart abswart is offline
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Hi
Thanks for the feedback.At first the picture was fine, but the eye started playing up. I called the DSTV help line and believe they reset the settings to try and assist. The decoders are set up as TV 1,2 and 3 and the problem lies with TV 2.
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Old 2017-02-14 , 16:45
Geoff D Geoff D is offline
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Quote:
Originally Posted by abswart View Post
Hi
Thanks for the feedback. At first the picture was fine, but the eye started playing up. I called the DSTV help line and believe they reset the settings to try and assist. The decoders are set up as TV 1,2 and 3 and the problem lies with TV 2.
There is a good chance that all the decoders are now set to the same UHF channel causing the issue. BUT it depends on how the RF signal is distributed.

Decoder 1 RF OUT to decoder 2 RF IN, RF OUT to decoder 3 RF IN and the RF OUT to the remote TV? UHF channel clashes now guaranteed.

Alternatively (the better option) combine the RF OUT signals with SLX splitters and then distribute the combined RF signal wherever you want to use it with a tvLINK eye.

If only one decoder has the RF OUT connected to the distant TV, then this should not be causing any issues.

What about the HB setup? How has this been done?

The eye will only play up if it is not getting power from the decoder/s. And that could be a simple issue in the setup where the power is set to OFF.

This thread illustrates the dangers of NOT knowing precisely what ALL the decoder settings are before doing a reset to defaults.
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Last edited by Geoff D; 2017-02-14 at 16:51. .
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