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From: | Javs |
Subject: | Re: [Discuss-gnuradio] USRP heating up ! |
Date: | Thu, 7 Apr 2005 14:24:57 -0700 (PDT) |
Matt,
I tried the following and observed this:
>During normal operation, the AD chips can get pretty warm. Try >this:
>1 - Take off all daughterboards.
>2 - Plug in the the USRP. Do not run any software. Leave it for a >few minutes.
> Every chip other than the power supply on there should be at room temp. The LED should be flashing about 2-3 times per second.
>3 - Run some of the examples, and quit them normally (no ctrl-C). >A few minutes later the FPGA and AD chips should be back to room >temp. The LED should be flashing slower.
>4 - Run a receive program (like usrp_fft). After a few minutes, >the AD chip should be just slightly warm.
>5 - Leave the receive program running. In another window start up >a transmit program (like usrp_siggen). The codec chips should get >pretty hot, but not painfully hot. The FPGA should only show the >slightest hint of warmness.
>6 - Quit the receive program. The chips shoul get much cooler now.
>7 - quit the transmit program. Everything should return to room >temp.
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