dvb-fe-tool

dvb-fe-tool(1)                   User Commands                  dvb-fe-tool(1)



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.



DVBv5 Utils 1.16.7              Fri Oct 3 2014                  dvb-fe-tool(1)