> Hi Don. > > I'm ultra curious of how they did it. How did they covered the > full BW they have. > Did you looked inside, or did they sent a block diagram? > (...I was born curious... it is not a new symptom!)
Page 27 of their manual at http://www.signalhound.com/manual.pdf has a block diagram. The first LO for VHF and up is the ADF4350 wideband synth (138 MHz-4.4 GHz, -86 dBc/Hz @ 10 kHz at 3.3 GHz). Baseband processing is done with an AD9864 IF digitizer. The ADF4007 is used as a secondary divider for the ADF4350 output, as part of their image-rejection scheme. -- john, KE5FX _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
