Using an external clock with the RSPIIpro
Posted: Wed Dec 06, 2017 4:34 pm
Using an Hp3325B function generator set to 24Mhz sine wave @ 1.5 volts peak to peak and the coupling circuit consisting of a 10nF capacitor with the radio side connected to ground through a 1.18k resistor[1] I get the following behavior. The external clock-in line is connected first. I then plug the radio into a USB hub which has an external power supply. The hub has an LED indicator light which normally would simply come on and stay on. With the external clock connected, the LED flickers and goes out. Is this the usual behavior? Both my radios do this. Also, with the USB LED indicator out, "mir_sdr_GetDevices" reports 0 devices. Could product support shed some light onto what's happening?
[1] This is the coupling circuit given in "RSP2 Reference Clock Application Note"
[1] This is the coupling circuit given in "RSP2 Reference Clock Application Note"