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From: | ematlis |
Subject: | Re: [Discuss-gnuradio] offset at input of LF_RX |
Date: | Thu, 21 Jun 2007 20:44:04 -0400 (EDT) |
On Thu, 21 Jun 2007, Matt Ettus wrote:
Oddly enough, usrp_oscope.py doesn't show any DC bias whatsoever, regardless of what offset I put into the function generator. Maybe it's removed inside the flow-graph?DC offset is automatically removed in hardware, but you can turn that feature off.Can you explain that in more detail, please? Do you have a capacitor is series with the signal flow to remove any dc?It is done digitally.
If there is no dc-removing capacitor in the circuitry , then should I not expect that for a board using a single (positive) supply, that the signal is always above zero?
Matt
thanks, eric
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