[USRP-users] USRP X310

Joe Martin k5so at k5so.com
Tue Jul 14 10:10:36 EDT 2020


Arash, 

While Marcus’ response is certainly correct it does little in providing a practical answer to your question.  

I use an X310 with TwinRX daughterboards and have found that it is inadvisable to use input levels to the TwinRX daughterboard greater than -30dBm because higher levels than that tend to result in distortion/compression issues.  I don’t know what the damage threshold is for the input ports on the TwinRX daughterboard.  For my radio astronomy applications I use an input level of -60dBm and that seems to work quite well for me.  I don’t know if other daughterboards for the X310 have different input-level behavior.  Perhaps this response will give you ball park answers that you can use.

Regards, 

Joe


> On Jul 14, 2020, at 3:53 AM, Marcus Müller via USRP-users <usrp-users at lists.ettus.com> wrote:
> 
> Hi Arash,
> 
> The input power is not defined by the motherboard (X310) you're using,
> but by the analog frontend daughterboard (like TwinRX, UBX-160, SBX,…)
> you've plugged in to these.
> 
> On 14.07.20 11:38, Arash Jafari via USRP-users wrote:
>> National Instrument congratulation!! very bad documentation.
> 
>> 
> Best regards,
> Marcus Müller
> 
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