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From: | Marcus D. Leech |
Subject: | Re: [Discuss-gnuradio] RX Gain (UHD vs libusrp2) |
Date: | Mon, 28 Mar 2011 10:24:41 -0400 |
User-agent: | Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9 |
On 28/03/2011 10:02 AM, Jason Abele wrote:
Also, the USRP2 has no VGA in front of the ADC -- the only gain control you have is the WBX itself, which is a total range of 31.5dB, AFAIR.Even setting ADC-digital = 6.0, ADC-digital-fine = 0.5 and setting the WBX-PGA0 to same value used with libusrp2 the result is not the same as in I'm losing something like 20 dB. Is this expected ?Missing 20dB sounds like maybe you have the other antenna port selected. Have you tried swapping antenna ports or using a call to set_rx_antenna() to explicitly select your antenna port? Jason
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