sorry for send this again. video is on http://www.telemann.co.jp/00012.mts
2010年3月18日17:28 加藤義也 <[email protected]>: > Hello gnu-radio friends. > > I would like to realize RFX2400 full duplex configuration. > > I am using RFX2400 on USRP2 and tried to transmit and receive(fft.py at the > same time. > But I got unstable spectrum for both TX/RX. > Here is the video > And configuration is as below. > > ------------------------------------- > U-+RFX2400(TX/RX)+----SpectrumAnalyzer. > S | > R | > P | > 2-+RFX2400( RX2 )+----Signal Source. > ------------------------------------- > > I found RFX2400 schematics from below URL > http://code.ettus.com/redmine/ettus/attachments/9/rfx2400.pdf > > And I believe this situation is because of U202 / U209 to swith state > cycles > A->B and B->A in very often. > > I would like to use both U202 / U209 to fix the swith state always to "A". > > Would you please let me know how to make U202(RFswitch) / U209(RFswitch) > fix to A state. > (say "full-duplex mode") > > Do I still need to hardwire fix the RF-swith to A? if there is no FPGA > image / firmware available to fix them. > > Thank you very much in advance. > > Best Regards. > > -- > -- > 株式会社テレマン・コミュニケーションズ > 加藤義也<[email protected]> > 121-0012 東京都足立区青井6-8-11 > 電話:03-5888-7300 FAX:03-5888-7301 > Telemann Communications Co., Ltd. > TEL:+(81)-3-5888-7300 FAX:+(81)-3-5888-7301 > Board Member / Technical Director > Yoshiya Kato <[email protected]> > > -- -- 株式会社テレマン・コミュニケーションズ 加藤義也<[email protected]> 121-0012 東京都足立区青井6-8-11 電話:03-5888-7300 FAX:03-5888-7301 Telemann Communications Co., Ltd. TEL:+(81)-3-5888-7300 FAX:+(81)-3-5888-7301 Board Member / Technical Director Yoshiya Kato <[email protected]>
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