Re: [USRP-users] TWINRX Gain

2020-10-15 Thread Martin Braun via USRP-users
--- > *From:* Marcus D. Leech > *Sent:* Tuesday, September 29, 2020 2:23 PM > *To:* Mark Koenig > *Cc:* usrp-users@lists.ettus.com > *Subject:* Re: [USRP-users] TWINRX Gain > > On 09/29/2020 02:02 PM, Mark Koenig wrote: > > Yes, I understand gain varies with temperature

Re: [USRP-users] TWINRX Gain

2020-09-29 Thread Mark Koenig via USRP-users
I get it, thanks for the block diagrams. I will look into doing a lab test with a calibrated source. From: Marcus D. Leech Sent: Tuesday, September 29, 2020 2:23 PM To: Mark Koenig Cc: usrp-users@lists.ettus.com Subject: Re: [USRP-users] TWINRX Gain On 09/29

Re: [USRP-users] TWINRX Gain

2020-09-29 Thread Marcus D. Leech via USRP-users
On 09/29/2020 02:02 PM, Mark Koenig wrote: Yes, I understand gain varies with temperature and frequency, I just wasnt sure if there was any receive chain analysis performed with the daughtecard to give the developer an idea of what type of gain is provided over the attenuation range at various

Re: [USRP-users] TWINRX Gain

2020-09-29 Thread Mark Koenig via USRP-users
tenths of dBsI was just interested in what the actual gain range provided by the card is. Thanks Mark From: Marcus D. Leech Sent: Tuesday, September 29, 2020 1:58 PM To: Mark Koenig Cc: usrp-users@lists.ettus.com Subject: Re: [USRP-users] TWINRX Gain On 09

Re: [USRP-users] TWINRX Gain

2020-09-29 Thread Marcus D. Leech via USRP-users
On 09/29/2020 01:54 PM, Mark Koenig wrote: Marcus, Thank you for the quick response. In my application I am trying to remove the true gain I am applying to the signal. So when you refer to control range, moving from 0 to 10, may result in only 5dB of gain, or something to that effect, corre

Re: [USRP-users] TWINRX Gain

2020-09-29 Thread Mark Koenig via USRP-users
true gain applied, can you pass it along? Thank you very much. Mark From: Marcus D Leech Sent: Tuesday, September 29, 2020 1:51 PM To: Mark Koenig Cc: usrp-users@lists.ettus.com Subject: Re: [USRP-users] TWINRX Gain It’s the gain control range. Not the absolute

Re: [USRP-users] TWINRX Gain

2020-09-29 Thread Marcus D Leech via USRP-users
It’s the gain control range. Not the absolute gain. I don’t know of the top of my head how much of that range is gain and how much is attenuation. Sent from my iPhone > On Sep 29, 2020, at 1:43 PM, Mark Koenig via USRP-users > wrote: > >  > The TwinRx daughtercard identifies as having 0-9

[USRP-users] TWINRX Gain

2020-09-29 Thread Mark Koenig via USRP-users
The TwinRx daughtercard identifies as having 0-93dB gain range. Is this true? If I dial in 90dB am I truly getting 90dB of gain and my incoming signal is amplified that much or is there some sort of offset and the gain range is something different? I believe the UBX-160 offers 0-31.5dB. Than

Re: [USRP-users] TwinRX Gain

2017-07-13 Thread Marcus D. Leech via USRP-users
On 07/13/2017 07:57 PM, Eugene Grayver via USRP-users wrote: Hello, I am trying to understand the ‘actual’ gain in TwinRX. Experimentally, I see that a 0 dBm input requires gain of +46 dB to give a full-scale (-1/1) output. Interestingly, the two channels have about 3 dB of difference in ga

[USRP-users] TwinRX Gain

2017-07-13 Thread Eugene Grayver via USRP-users
Hello, I am trying to understand the 'actual' gain in TwinRX. Experimentally, I see that a 0 dBm input requires gain of +46 dB to give a full-scale (-1/1) output. Interestingly, the two channels have about 3 dB of difference in gain (I would have expected a lot less). Since the A/D expects a