NAME

       dvb-fe-tool - DVBv5 tool for frontend settings inspect/change

SYNOPSIS

       dvb-fe-tool [OPTION]...

DESCRIPTION

       dvbv5-fe-tool  is a command line tool for digital TV services that is compliant with version 5 of the DVB
       API, and backward compatible with the older v3 DVB API.

       dvb-fe-tool is a tool to inspect and change the tuning parameters directly at the Digital TV frontend. If
       called without any parameter, it will show the device capabilities.

OPTIONS

       The following options are valid:

       -3, --dvbv3
              Use DVBv3 only

       -a, --adapter=ADAPTER
              Digital TV adapter to use. Default: 0.

       -A, --acoustical
              beeps  if  signal quality is good. Also enables femon mode. Please notice that console beep should
              be enabled on your wm.

       -d, --set-delsys=PARAMS
              Sets delivery system to the one specified at PARAMS. use  help  to  show  all  supported  delivery
              systems.

       -f, --frontend=FRONTEND
              Digital TV frontend to use. Default: 0.

       -g, --get
              Gets frontend parameters.

       -m, --femon
              Monitors  the  frontend  locking  status  and  the  available statistics for a frontend that it is
              already being streaming via some other application.  This opens the frontend on read-only mode.

       -v, --verbose
              Enables debug messages.

       -?, --help
              Outputs the usage help.

       --usage
              Gives a short usage message.

       -V, --version
              Prints program version.

EXIT STATUS

       On success, it returns 0.

EXAMPLES

   Showing device capabilities
       This is the default behavior. It will open the frontend and show what capabilities it supports and what's
       the version of the DVB API.

       $ dvb-fe-tool
       Device DRXK DVB-C DVB-T (/dev/dvb/adapter0/frontend0) capabilities:
            CAN_FEC_1_2
            CAN_FEC_2_3
            CAN_FEC_3_4
            CAN_FEC_5_6
            CAN_FEC_7_8
            CAN_FEC_AUTO
            CAN_GUARD_INTERVAL_AUTO
            CAN_HIERARCHY_AUTO
            CAN_INVERSION_AUTO
            CAN_MUTE_TS
            CAN_QAM_16
            CAN_QAM_32
            CAN_QAM_64
            CAN_QAM_128
            CAN_QAM_256
            CAN_RECOVER
            CAN_TRANSMISSION_MODE_AUTO
       DVB API Version 5.10, Current v5 delivery system: DVBC/ANNEX_A
       Supported delivery systems:
           [DVBC/ANNEX_A]
            DVBC/ANNEX_C
            DVBT

   Setting the delivery system
       Some  devices  (like the above example) supports multiple delivery systems.  Older DVB applications might
       not be able to switch from one delivery system to another one, as this feature were added only on DVB API
       version 5.5.

       This feature allows one to use those legacy applications.

       $ dvb-fe-tool -d dvbc/annex_c
       Changing delivery system to: DVBC/ANNEX_C

   Getting the current frontend settings
       The  tool  can also be used to get the current settings. In this case, it will open the frontend at read-
       only mode, allowing it to be called while some other digital TV application is running.

       $ dvb-fe-tool -g
       FREQUENCY = 573000000
       MODULATION = QAM/256
       INVERSION = AUTO
       SYMBOL_RATE = 5217000
       INNER_FEC = NONE
       DELIVERY_SYSTEM = DVBC/ANNEX_A

   Monitoring the frontend
       The dvb-fe-tool can also be used to monitor a DVB frontend statistics without  touching  on  the  device,
       using  the  --femon (or -m) parameter.  The typical usage is to be able to read the statistics while some
       other DVB program or application is in use.

       On this mode, it will keep printing the frontend statistics on every second, until the program is aborted
       with CTRL-C:

       For example, while dvbv5-zap is tuning some channel, it will produce:

       $ dvb-fe-tool --femon
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.40dB UCB= 370 postBER= 28.0x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.80dB UCB= 370 postBER= 25.3x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.30dB UCB= 370 postBER= 25.7x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.30dB UCB= 370 postBER= 28.4x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.50dB UCB= 370 postBER= 26.5x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.50dB UCB= 370 postBER= 26.9x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.20dB UCB= 370 postBER= 28.6x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.70dB UCB= 370 postBER= 26.7x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.80dB UCB= 370 postBER= 23.3x10^-6 PER= 0
       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= 36.50dB UCB= 370 postBER= 26.7x10^-6 PER= 0

       If  the  standard  error  device  is  the console, the messages will be colored according with the signal
       quality.

       The presented statistics types and unities will depend  on  the  ones  that  the  hardware  you're  using
       support. So, it may vary from hardware to hardware.

       On  this  mode,  it  also  supports  to  output  an audible signal if the quality is good, using the '-A'
       parameter.

       Please notice that, on modern Linux systems, the system audio should be enabled at  your  window  manager
       and the audio theme should be set to produce an audio when BELL (character) is sent to the terminal.

   NOTE:
       C/N  on  the  above stats means Carrier to Noise ratio. This is the Signal to Noise ratio measured at the
       pilot carrier or just the Signal to Noise ratio for modulation types where just one carrier is used, like
       DVB-C or DVB-S.

BUGS

       Report bugs to Linux Media Mailing List <linux-media@vger.kernel.org>

COPYRIGHT

       Copyright (c) 2011-2014 by Mauro Carvalho Chehab.

       License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.
       This  is  free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent
       permitted by law.