BDA Driver with DVB-S Tuner can't be connected

NTDEV
1

I write a BDA driver that is has a KSNODE_BDA_QPSK_DEMODULATOR demodulator node. But in the Graphedit I can’t connect the “DVB-S Network provider” filter to my “Tuner Filter”.
When I change the KSNODE_BDA_QPSK_DEMODULATOR to KSNODE_BDA_COFDM_DEMODULATOR, my “Tuner Filter” can be connected to the “DVB-T Network provider” successfully.

Next I find that the DVB-T and ATSC can be connected to my "Tuner Filter ". But DVB-C and DVB-S can’t be connected to “Tuner Filter”.

I don’t know what’s problem in my diver, or is that the MicroSoft do not supports DVB-C and DVB-S?

/////////////////////////////////////////////
// My BDA Tuner node
//
//DVB-S
const KSNODE_DESCRIPTOR DTV2_DVB_S_TunerFilterNodeDescriptors =
{
{
&DTV2RFTunerNodeAutomation, // PKSAUTOMATION_TABLE AutomationTable;
&KSNODE_BDA_RF_TUNER, // Type
NULL // Name
},
{
&DTV2DemodulatorNodeAutomation, // PKSAUTOMATION_TABLE AutomationTable;
&KSNODE_BDA_QPSK_DEMODULATOR, // Type &KSNODE_BDA_QPSK_DEMODULATOR,//
NULL // Name
}
};

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2

Yulufei wrote:

I write a BDA driver that is has a KSNODE_BDA_QPSK_DEMODULATOR
demodulator node. But in the Graphedit I can’t connect the “DVB-S
Network provider” filter to my “Tuner Filter”.
When I change the KSNODE_BDA_QPSK_DEMODULATOR to
KSNODE_BDA_COFDM_DEMODULATOR, my “Tuner Filter” can be connected to
the “DVB-T Network provider” successfully.

Next I find that the DVB-T and ATSC can be connected to my "Tuner
Filter ". But DVB-C and DVB-S can’t be connected to “Tuner Filter”.

I don’t know what’s problem in my diver, or is that the MicroSoft do
not supports DVB-C and DVB-S?

DVB-C uses KSNODE_BDA_QAM_DEMODULATOR.

I know that KSNODE_BDA_QPSK_DEMODULATOR works for DVB-S, because I have
seen it work, but it was several years ago. What operating system are
you using for your testing?

–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.

3

Yes, I use uses KSNODE_BDA_QAM_DEMODULATOR for DVB-C.
My driver working on xp ,vistal32,vista64.
But all can’t be connected when use DVB-C or DVB-S.

Yulufei wrote:

I write a BDA driver that is has a KSNODE_BDA_QPSK_DEMODULATOR
demodulator node. But in the Graphedit I can’t connect the “DVB-S
Network provider” filter to my “Tuner Filter”.
When I change the KSNODE_BDA_QPSK_DEMODULATOR to
KSNODE_BDA_COFDM_DEMODULATOR, my “Tuner Filter” can be connected to
the “DVB-T Network provider” successfully.

Next I find that the DVB-T and ATSC can be connected to my "Tuner
Filter ". But DVB-C and DVB-S can’t be connected to “Tuner Filter”.

I don’t know what’s problem in my diver, or is that the MicroSoft do
not supports DVB-C and DVB-S?

DVB-C uses KSNODE_BDA_QAM_DEMODULATOR.

I know that KSNODE_BDA_QPSK_DEMODULATOR works for DVB-S, because I have
seen it work, but it was several years ago. What operating system are
you using for your testing?

–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.

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