SignalScopePage » History » Revision 3
Revision 2 (max, 04/22/2017 04:04 PM) → Revision 3/30 (max, 04/22/2017 04:04 PM)
= Signal Scope = == Installation == Before running the scope app, check that the following packages are also installed: * GNU Radio * The op25 blocks * Frank's gr-fsk4 block * The op25 repeater block Other than these pre-requisites, no special setup or installation is needed. There are two overall options depending on your hardware (USRP or disc-tap). == Running with the disc-tap option == The signal scope does not require the USRP. If you have a discriminator-tapped receiver, use the "-a" option: {{{ ./scope.py -a -v 25 }}} == Running with the USRP == It's helpful to find out the current calibration error beforehand (I use kalibrate), for example, +1234 hertz: {{{ ./scope.py -f 412.34e6 -RA -g 65 -c 1234 -v 25 }}} In USRP mode, several additional program functions are enabled (spectrum FFT, constellation diagram, PSK demod, and iDEN correlation).
