(→Remark about frequency argument)
m (typo fixed)
Latest revision as of 13:24, 16 April 2020
CRC-Dwap.py is the USRP complex stream or file replayer command developed by Communication Research Center (CRC) from Canada. It is written in python and is open.
CRC-Dwap takes complex sample as input, configure the USRP and daughterboard and send it to the USRP that is producing the RF signal.
 Remark about frequency argument
Frequency argument (-f <FREQUENCY>) of CRC-Dwap.py can be either positive or negative. If it is negative, signal will be mirrored. This is useful for use with Basic TX board for example as we use the image frequency for transmission. For DAB transmission in band III, we generally use:
- BasicTX board: -frequency (negative)
- WBX and RFX400 modified board: frequency (positive)
Usage: CRC-Dwap.py [options] filename1 [-f frequency2 filename2 [...]]
Options: -h, --help show this help message and exit -a, --agc enable agc -c CLOCKRATE, --clockrate=CLOCKRATE set USRP clock rate (128e6) --copy enable real to imag data copy when in real mode -e ENCODING, --encoding=ENCODING choose data encoding: [s]igned or [f]loat. -f FREQUENCY, --frequency=FREQUENCY set output frequency (222.064e6) -g GAIN, --gain=GAIN set output pga gain -l, --list list USRPs and daugtherboards -m MODE, --mode=MODE mode: 1: real, 2: complex (2) -o, --osc enable oscilloscope -r SAMPLINGRATE, --samplingrate=SAMPLINGRATE set input sampling rate (3200000) -s, --spectrum enable spectrum analyzer -u, --usrp enable USRP output