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Windows Network Driver 26. July 2015

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roel:
Hi,

As DVB server i'm using linux with the current linux driver.
tested with both the mini-pci-express and the usb media tv pro tuner.

As client i'm using windows 7 , with the latest dvbviewer pro.
Current sundtek network driver for windows.

My cable provider is delivering two different types of transponders.
Most of the transponders are modulated witch QAM64
Some transponders are migrated to QAM256.

On DVBvieuwer switching between channels with the same modulation works fine.
But when switching between channels witch different modulations (QAM64 -> QAM256 or the other way around) is very slow.

Some more investigation on the linux DVB server learns that the DVBviewer client (or just the network plugin on windows) isn't directly tuning to the right modulation after tuning to a channel with a different modulation.

I think it has to do with the windows network client because it seems to still requests the modulation, of the previous tuned channel/transponder.
But maybe it's the dvb-c server on the linux side , which is not detecting the modulation change.




Log of Linux DVB-C server (switching between same modulation tranponder):

SIGNAL: [.................................] (100%)  BER:      0 FREQ: 412000000  Hz LOCKED: YES MER: 357 SYM: 6875000 MOD: QAM256
SIGNAL: [.................................] (100%)  BER:      0 FREQ: 412000000  Hz LOCKED: YES MER: 356 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 404000000  Hz LOCKED: YES MER: 355 SYM: 6875000 MOD: QAM256
SIGNAL: [.............                    ] ( 40%)  BER:  41248 FREQ: 404000000  Hz LOCKED: YES MER: 355 SYM: 6875000 MOD: QAM256
SIGNAL: [.............                    ] ( 40%)  BER:  41248 FREQ: 404000000  Hz LOCKED: YES MER: 357 SYM: 6875000 MOD: QAM256
SIGNAL: [.............                    ] ( 39%)  BER:  41248 FREQ: 404000000  Hz LOCKED: YES MER: 355 SYM: 6875000 MOD: QAM256
SIGNAL: [.............                    ] ( 39%)  BER:  41248 FREQ: 404000000  Hz LOCKED: YES MER: 352 SYM: 6875000 MOD: QAM256
SIGNAL: [.............                    ] ( 39%)  BER:     75 FREQ: 404000000  Hz LOCKED: YES MER: 352 SYM: 6875000 MOD: QAM256
SIGNAL: [..............................   ] ( 90%)  BER:     75 FREQ: 404000000  Hz LOCKED: YES MER: 352 SYM: 6875000 MOD: QAM256
SIGNAL: [..............................   ] ( 90%)  BER:      0 FREQ: 404000000  Hz LOCKED: YES MER: 352 SYM: 6875000 MOD: QAM256
SIGNAL: [.................................] (100%)  BER:      0 FREQ: 404000000




Log of Linux DVB-C server (switching between different modulation tranponder):



SIGNAL: [.................................] (100%)  BER:      0 FREQ: 404000000  Hz LOCKED: YES MER: 352 SYM: 6875000 MOD: QAM256
SIGNAL: [.................................] (100%)  BER:      0 FREQ: 404000000  Hz LOCKED: YES MER: 352 SYM: 6875000 MOD: QAM256

< Here the logging pauzes for about 5 seconds >

SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 0 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED:  NO MER: 335 SYM: 6875000 MOD: QAM256
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED: YES MER: 333 SYM: 6875000 MOD: QAM64
SIGNAL: [                                 ] (  0%)  BER:  41248 FREQ: 372000000  Hz LOCKED: YES MER: 335 SYM: 6875000 MOD: QAM64
SIGNAL: [.............                    ] ( 40%)  BER:  41248 FREQ: 372000000  Hz LOCKED: YES MER: 336 SYM: 6875000 MOD: QAM64
SIGNAL: [.............                    ] ( 40%)  BER:  41248 FREQ: 372000000  Hz LOCKED: YES MER: 333 SYM: 6875000 MOD: QAM64
SIGNAL: [..............................   ] ( 92%)  BER:     59 FREQ: 372000000  Hz LOCKED: YES MER: 331 SYM: 6875000 MOD: QAM64
SIGNAL: [..............................   ] ( 92%)  BER:     59 FREQ: 372000000  Hz LOCKED: YES MER: 331 SYM: 6875000 MOD: QAM64


Kind regards,

Roel

Sundtek:
The commands aren't sent as a complete transaction, rather than single commands. This is something that should be updated in the windows network driver on our side, we put it onto our todo list (unfortunately there are some other topics on our list right now... best would be to subscribe to this posting and we'll come back with a solution as soon as possible).

Tryon:

--- Zitat von: Sundtek am März 19, 2012, 07:12:54 Vormittag ---As we are moving forward quickly with this it's work in progress, if you have any issues with it please let us know!
--- Ende Zitat ---
Hi!
Maybe it would be good idea to use translated version when detected OS language is not DE?

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