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[Discuss-gnuradio] USRP2-FLEX2400 Transmit and Receive problems
From: |
Joseph Wamicha |
Subject: |
[Discuss-gnuradio] USRP2-FLEX2400 Transmit and Receive problems |
Date: |
Tue, 31 Aug 2010 16:51:21 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.11) Gecko/20100713 Thunderbird/3.0.6 |
Hi,
We are currently experiencing Transmit and possibly Receive problems
with the USRP2-Flex2400 boards.
- The USRP2 is detected:
# find_usrps -e eth0
00:50:c2:85:32:73 hw_rev = 0x0400
- The latest firmware and Raw Ethernet FPGA images have been written
onto the SDRAM: u2_rev3-20100603.bin, u2_rev3-20100603.bin
- To test receive, we transmit a 2.4GHz, 10 dBm RF signal using the HP
8350B Sweep Oscillator/Signal Generator. This is detected by both the
USRP2-FLEX2400 (using usrp2_fft.py script) and Agilent Spectrum Analyzer
(Please see screen shots attached). However, the usrp2_fft.py shows some
odd sidebands around the the 2.4GHz central frequency when the signal
generator is turned on.
- Both LEDs D and F are lit up.
- Gnuradio version 3.2.2 is being used on Ubuntu Lucid Lynx (10.04).
We then turn off the Signal Generator, and transmit a 2.4GHz signal
solely using the USRP2-FLEX2400 by running 'usrp2_siggen.py -f 2.4e9 -e
eth0'. Nothing gets picked up by the Agilent Spectrum Analyzer
USRP2-FLEX2400.
Is there a USRP2-FLEX2400 transmit/receive problem while using the
latest firmware and raw ethernet FPGA code?
Thanks,
Jaw.
usrp2_fft-SignalGenerator-Off.png
Description: PNG image
usrp2_fft-SignalGenerator-On.png
Description: PNG image
- [Discuss-gnuradio] USRP2-FLEX2400 Transmit and Receive problems,
Joseph Wamicha <=
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