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Today's Topics:
1. Question for "USRP2 + RFX2400" (???)
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Message: 1
Date: Tue, 8 Mar 2011 22:28:19 +0900
From: ??? <[email protected]>
To: <[email protected]>
Subject: [USRP-users] Question for "USRP2 + RFX2400"
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Hello.
I am trying to implement RF relay system with USRP2.
It?s not so long time to start this.
So I am beginner and have many questions about USRP2.
My questions are as follows.
1. I am using the daughter board ?RFX2400?.
I know that RFX2400 is transceiver and its RX and TX independently operate.
But my result of test is different from the prior knowledge.
Is it possible?
????_a.jpg
I generate the signal from the host and transmit the signal to USRP2 through
the Ethernet.
Can this signal transmitted from the TX antenna be received to RX antenna?
2. And I observed the discontinuity of transmitting the signal.
What does the discontinuity in the below picture cause? USRP2 or My Computer?
????_b.jpg
Can a signal be continuously transmitted?
3. The last question.
I generated "square signal( Freq=500kHz, samp_rate=4MHz)" using GRC.
I changed USRP2's Frequency(RF singnal's center frequency ? F_c)
(1) F_c=2.3GHz
????_1.jpg
(2) F_c=2.5GHz
????_2.jpg
(3) F_c=2.7GHz
????_3.jpg
I observed square signals generated from the different center frequency through
the spectrum analyzer.
I found that the unexpected signal from 2.4GHz~2.5GHz band always arise.
Why does this situation happen?
Thank you for your valuable time.
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