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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¶
- -f
- Use file output with given filename. (use /dev/stdout for standard output)
- -F
- Set the output format (see doc/example.ini for formats) for the file output.
- -o
- 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.
- -u
- Use UHD output with given device string. (use for default device)
- -F
- Set the transmit frequency when using UHD output. (mandatory option when using UHD)
- -G
- Set the transmit gain for the UHD driver (default: 0)
- -T
- Enable filtering before the output, using the specified file containing the filter taps.
- Use 'default' as taps_file to use the internal taps.
SEE ALSO¶
A user guide for the mmbTools is available http://www.opendigitalradio.org/
April 2022 |