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catalinii / minisatip

minisatip is an SATIP server for linux using local DVB-S2, DVB-C, DVB-T or ATSC cards
https://minisatip.org
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Signal STR reported incorrectly in web interface #902

Closed mark-royds closed 2 years ago

mark-royds commented 2 years ago

Using dvbv5-zap I tune a transponder and get a signal strength report of 106.5%:

root@zgemmah2s:~# dvbv5-zap -a 0 -c dvb_channel.conf -f 0 "BBC ONE HD"
WARNING  Ignoring device /dev/dvb/adapter0/audio0
WARNING  Ignoring device /dev/dvb/adapter0/video0
using demux 'dvb0.demux0'
reading channels from file 'dvb_channel.conf'
tuning to 10847000 Hz
video pid 5400
  dvb_set_pesfilter 5400
dvb_dev_set_bufsize: buffer set to 6160384
audio pid 5402
  dvb_set_pesfilter 5402
       (0x00)
Lock   (0x1f) Signal= 106.50% C/N= 17.28dB
          Layer A: C/N= 86.62%
Lock   (0x1f) Signal= 106.50% C/N= 17.15dB
          Layer A: C/N= 85.96%

If I tune the same channel using minisatip, the web interface reports the signal strength as 6%

The --multiplier option cannot be used to correct this problem as it is applied after the rollover/truncation occurs. EG --multiplier 0:0.5-0.5 gives a signal strength of 3%

lars18th commented 2 years ago

Hi @mark-royds ,

Please, could you close this issue? We're targeting it in #911. So, I suggest to continue there.

Jalle19 commented 2 years ago

Closing as duplicate of #911 , the root cause could be the same