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ODR-DABMOD(1) User Commands ODR-DABMOD(1)

NAME

odr-dabmod - DAB modulator compliant to ETSI EN 300 401

SYNOPSIS

odr-dabmod <configuration_file>
odr-dabmod input (-f filename -F format | -u uhddevice -F frequency) [-o offset][-G txgain] [-T filter_taps_file] [-a gain] [-c clockrate] [-g gainMode] [-m dabMode] [-r samplingRate] [-l] [-h]

Where input is:

ETI input filename (default: stdin), or
tcp://source:port for ETI-over-TCP input, or
zmq+tcp://source:port for ZMQ input, or
udp://:port for EDI input.

DESCRIPTION

ODR-DabMod is a software-defined DAB modulator that receives or reads ETI, and generates modulated I/Q data usable for transmission. It can directly interface the Ettus USRP devices, and can also be used with other SDR signal sources.

This I/Q data which is encoded as complex floats (32bits per complex sample) can be written to a file or pipe, sent to a USRP device using the integrated output for the open-source USRP Hardware Driver (UHD) or to other software-defined radio (SDR) devices using the SoapySDR5 library.

The output of the modulator can also be sent to a GNURadio flow-graph for further processing, conversion or analysis using a ZeroMQ network connection.

OPTIONS

Use file output with given filename. (use /dev/stdout for standard output)
Set the output format (see doc/example.ini for formats) for the file output.
Set the timestamp offset added to the timestamp in the ETI. The offset is a double.
Specifying this option has two implications: It enables synchronous transmission, requiring an external REFCLK and PPS signal and frames that do not contain a valid timestamp get muted.
Use UHD output with given device string. (use for default device)
Set the transmit frequency when using UHD output. (mandatory option when using UHD)
Set the transmit gain for the UHD driver (default: 0)
Enable filtering before the output, using the specified file containing the filter taps.
Use 'default' as taps_file to use the internal taps.
Apply digital amplitude gain.
Set the DAC clock rate and enable Cic Equalisation.
Set computation gain mode: fix, max or var
Set DAB mode: (0: auto, 1-4: force).
Set output sampling rate (default: 2048000).
Loop file when reach end of file.
Print this help.

SEE ALSO

odr-dabmux(1)

A user guide for the mmbTools is available http://www.opendigitalradio.org/

April 2022