Hi, I'm currently doing some tuning testing with the STV0297 DVB-C Card. I have a DVB-S to DVB-C TransModulator which I am using and just modifying the output settings.
I'm having some issues tuning in a couple of the test cases and was wondering if there was any technical reason why this was not possible. The tests I am having trouble tuning in are... 1. Symbol Rate of 1.74MBd with QAM 32, 64 & 128 (works fine with QAM 16 and 256) 2. Symbol Rate of 3.48MBd with QAM 32 (works fine with all other QAM's) I am testing the tuning with dvbtune and as long as the xml version of the SDT is returned I am counting that as working. Does anyone know why I cannot tune with these settings? Is it a problem with the driver? I've provided my test results below; Thanks for any help Mike *Frequency (MHz) * *Bitrate (MB/s) * *Symbol Rate (MBd) * *Modulation (QAM) * *Tuning Tested* *Tuning Works* *Notes* 62 25.4 6.89 16 *Yes* *Yes* 220 25.4 6.89 16 *Yes* *Yes* 440 25.4 6.89 16 *Yes* *Yes* 62 25.21 6.84 16 *Yes* *Yes* 220 25.21 6.84 16 *Yes* *Yes* 440 25.21 6.84 16 *Yes* *Yes* 62 12.83 3.48 16 *Yes* *Yes* 220 12.83 3.48 16 *Yes* *Yes* 440 12.83 3.48 16 *Yes* *Yes* 62 6.41 1.74 16 *Yes* *Yes* 220 6.41 1.74 16 *Yes* *Yes* 440 6.41 1.74 16 *Yes* *Yes* 62 31.75 6.89 32 *Yes* *Yes* 220 31.75 6.89 32 *Yes* *Yes* 440 31.75 6.89 32 *Yes* *Yes* 62 31.52 6.84 32 *Yes* *Yes* 220 31.52 6.84 32 *Yes* *Yes* 440 31.52 6.84 32 *Yes* *Yes* 62 16.04 3.48 32 *Yes* *No* Couldn't Lock 220 16.04 3.48 32 *Yes* *No* Couldn't Lock 440 16.04 3.48 32 *Yes* *No* Couldn't Lock 62 8.02 1.74 32 *Yes* *No* Couldn't Lock 220 8.02 1.74 32 *Yes* *No* Couldn't Lock 440 8.02 1.74 32 *Yes* *No* Couldn't Lock 62 38.1 6.89 64 *Yes* *Yes* 220 38.1 6.89 64 *Yes* *Yes* 440 38.1 6.89 64 *Yes* *Yes* 62 37.82 6.84 64 *Yes* *Yes* 220 37.82 6.84 64 *Yes* *Yes* 440 37.82 6.84 64 *Yes* *Yes* 62 19.24 3.48 64 *Yes* *Yes* 220 19.24 3.48 64 *Yes* *Yes* 440 19.24 3.48 64 *Yes* *Yes* 62 9.62 1.74 64 *Yes* *No* Couldn't Lock 220 9.62 1.74 64 *Yes* *No* Couldn't Lock 440 9.62 1.74 64 *Yes* *No* Couldn't Lock 62 44.45 6.89 128 *Yes* * Yes* 220 44.45 6.89 128 *Yes* *Yes* 440 44.45 6.89 128 *Yes* *Yes* 62 44.12 6.84 128 *Yes* *Yes* 220 44.12 6.84 128 *Yes* *Yes* 440 44.12 6.84 128 *Yes* *Yes* 62 22.45 3.48 128 *Yes* *Yes* 220 22.45 3.48 128 *Yes* *Yes* 440 22.45 3.48 128 *Yes* *Yes* 62 11.22 1.74 128 *Yes* *No* Couldn't Lock 220 11.22 1.74 128 *Yes* *No* Couldn't Lock 440 11.22 1.74 128 *Yes* *No* Couldn't Lock 62 50.8 6.89 256 *Yes* * Yes* 220 50.8 6.89 256 *Yes* *Yes* 440 50.8 6.89 256 *Yes* *Yes* 62 50.43 6.84 256 *Yes* *Yes* 220 50.43 6.84 256 *Yes* *Yes* 440 50.43 6.84 256 *Yes* *Yes* 62 25.66 3.48 256 *Yes* *Yes* 220 25.66 3.48 256 *Yes* *Yes* 440 25.66 3.48 256 *Yes* *Yes* 62 12.83 1.74 256 *Yes* *Yes* 220 12.83 1.74 256 *Yes* *Yes* 440 12.83 1.74 256 *Yes* *Yes*
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