Full duplex with RFX2400 on USRP2

GNU Radio
1

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.

–

æ ªå¼ä¼šç¤¾ãƒ†ãƒ¬ãƒžãƒ³ãƒ»ã‚³ãƒŸãƒ¥ãƒ‹ã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚º
åŠ è—¤ç¾©ä¹Ÿ[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 K. [email protected]

2

sorry for send this again.
video is on http://www.telemann.co.jp/00012.mts

2010å¹´3月18æ—¥17:28 åŠ è—¤ç¾©ä¹Ÿ [email protected]:

And I believe this situation is because of U202 / U209 to swith state
image / firmware available to fix them.
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 K. [email protected]

–

æ ªå¼ä¼šç¤¾ãƒ†ãƒ¬ãƒžãƒ³ãƒ»ã‚³ãƒŸãƒ¥ãƒ‹ã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚º
åŠ è—¤ç¾©ä¹Ÿ[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 K. [email protected]