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retrofan1979

Spectrum Inversion SAT>IP DVB-C in DVBViewer Pro?

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Retrofan

Okay thanks! But I cannot find hardware.xml on my computer is that right? Or do I have to make a new file?

 

With AuroraTV (SAT>IP Android app) I can scan DVB-C channels using the homing channel parameters.

I also would like to do this with DVBViewer Pro as my Mutant HD2400 currently doesn't accept more than 10 hardware pids at the same time.

Also, with homing channel parameters all 300 channels are scanned within 15 seconds instead of 75 seconds with the current method of DVBViewer.

So, maybe interesting for DVBViewer Pro to support this homing channel to boost the speed of channelscan ;-)

Edited by Retrofan

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Tjod

If you have devices in the DVBViewer under Options > Hardware, then there is a hardware.xml in the Configuration folder.

And you can build more specialised transponder lists.

If you use TransEdit http://www.DVBViewer.com/griga/TransEdit E/SettingsWindow.html#Scanner1

"Mark transponders without signal/PAT with [X] / [N]" and "Skip [X]-marked transponders on „Scan All" and from the second scan on it should be faster.

 

Or what behaver do you exactly mean by "homing channel parameters"?

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Retrofan

Thanks about hardware.xml file, just found it.

 

About homing channel method (also known as Fast channel search) parameters, look over here:

https://dvblogic.com/wiki/index.php/TVSource:_search_channels:_DVB-C

 

DVBLink TVSource also does support this fast way of scanning which includes scanning of Network-ID's.

The user only needs to set one frequency (the homing channel) which contains all the information about all other available transponders.

If the transponderlist changes, the homing channel will do this automatically as this frequency stays the same.

For example: scanning with DVBViewer Pro takes 60 seconds, which is fast, but with the homing channel (in AuroraTV) it only takes 15 seconds (!!)

DVBViewer only supports the "Normal" mode as DVBLInk TVSource calls it.

Edited by Retrofan

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Retrofan

The Allparams entry for hardware.xml doesn't work for me, as I don't need fake values as minisatip obeys the given parameters. So, I still will use the %3 trick.

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Tjod

The DVBViewer Supports scanning the Network Information Table.

But that will not generating a shorter transponder list. It will only add new frequency to scan and never remove one.

 

Scanning the NIT from one transponder and only scan frequency listed there would be faster. But is in many cases not reliable. There are many DVB provider which are not listing all transponder parameters on all frequency.

 

Therefore the DVBViewer "Search for additional frequencies" and TransEdit "Scan NIT and update transponder list while scanning" will scan the NIT on every transponder and only Add/Update but never remove frequency from the list to scan.

 

And this will mostly not change, because reliability is for a channel scan more imported the speed.

 

If you can convince world wide all DVB-T, DVB-S and DVB-C provider to use couplet NIT on every transponder this could change. But I doubt that will ever happen.

 

If you like to have the same effete in TransEdit, delete all but one working transponder from the list, Scan > Update save the transponder list and use this one from now on.

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Retrofan

I understand, thanks. I will stick with the %3 trick. It's not a big deal, but I just was curious about this as DVBLink TVSource does support this way of fast scanning and I have no problems with getting all the channels with scanning one homing channel. But that's because my cable operator supports it.

Luckily I don't need to change the transponderlist all the time. ;)

Edited by Retrofan

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Derrick

What  @Retrofan is referring to is called Logical Channel Numbering  (LCN). It is used by almost all cable providers and is even mandatory as a minimum requirement of German DVB-T2 devices though it isn't implemented on the German terrestrial network ;)

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Tjod

No, if you look at the link. For "Fast channel search" they using a NIT scan to create a marching Transponder list.

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retrofan1979

Ideal whould be that DVBViewer uses normal mode at default and fast mode optional. Then everyone can use the way of scanning they like...

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Derrick
vor 45 Minuten schrieb Tjod:

No, if you look at the link. For "Fast channel search" they using a NIT scan to create a marching Transponder list.

Before saying no have a look where you can find the LCN descriptor ;)

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Tjod

That would require adding third mode with a different GUI without a real benefit. Because providing the data for a working Transponder requires some advanced knowledge.

And somone how is able to find that data can eaely create a own Transponder list.

Zitat

If you like to have the same effete in TransEdit, delete all but one working transponder from the list, Scan > Update save the transponder list and use this one from now on.

And in TransEdit you can reduce the time outs to increase the scan speed.

http://www.DVBViewer.com/griga/TransEdit E/SettingsWindow.html#Scanner1

 

 

Zitat

Before saying no have a look where you can find the LCN descriptor ;)

And how would using LNC speed up the channel scan?

We are not talking about sorting the channel list. It is about how many second it takes to perform a couplet scan.

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Derrick
vor 2 Stunden schrieb Tjod:

If you like to have the same effete in TransEdit, delete all but one working transponder from the list, Scan > Update save the transponder list and use this one from now on.

It's by no means the same. LCN is linked to a specific Network ID.

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Tjod

What would make the noticeable difference in the channel scan time?

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Derrick
Am 08/02/2017 um 14:22 schrieb Derrick:

If you're referring to logical channel numbers (LCN) starting from a home transponder and a dedicated network ID that has been asked before. No much chance ;)

That's what I wrote before . There's nothing much to add. About the scan time read what @Retrofan wrote.

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Tjod

I don't see any explanation from you about the scan time in this topic.

 

I see the difference between a generic transponder list, with a lot unused transponders without a signal. Or a exactly matching transponder list where each transponder has a signal.

If you have only scan 45 transponders instead of 588 transponders that speed up things a lot. And scanning a transponder without signal and waiting for all time outs takes a lot longer the to get a signal on a transponder with channels.

 

But I don't see where other things would make a additional noticeable difference.

@Derrick but feel free to describe it here in detailed. What exactly the difference is. Until no I don't see any description only some blank comments with one key word.

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Retrofan
On ‎18‎-‎8‎-‎2017 at 7:07 PM, Retrofan said:

Maybe this is helpful, look at page 21: https://yousee.dk/~/media/pdf/CPE/Rules_Operation.ashx

And is it useful?

 

The homing channel contains the data of active transponders, so it's always updated.

 

Could you also please support Logical Channel number (LCN) Descriptor, page 12?

Thanks

Edited by Retrofan

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Tjod

Channel Numbers are determined by the position of the channel in the channel list.

Therefore gaps between channel numbers are not possible. And that will not change in the foreseeable future. Because it would require replacing the current channel list format (storage format an in memory format used by the DVBViewer for everything related to channel data).

 

And here some older discussions relating LCN

http://www.DVBViewer.tv/forum/topic/48437-logical-channel-numbering/

http://www.DVBViewer.tv/forum/topic/46989-extractingusing-lcn-data/

 

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Derrick

Don't wait for these features. It took years of discussion to allow starting channel numbering with 1 though everybody else used this scheme. Now it's possible but still hidden in the tweaks ;)

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Tjod
Zitat

Now it's possible but still hidden in the tweaks

It is the default for new installations

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Derrick
Zitat

It is the default for new installations

wow (w00t)

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