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Re: [Discuss-gnuradio] USRP1 XCV2450 LO - can it be bypassed with the mo
From: |
Nick Iliev |
Subject: |
Re: [Discuss-gnuradio] USRP1 XCV2450 LO - can it be bypassed with the motherboard's LO |
Date: |
Sat, 16 Jun 2012 12:48:48 -0400 |
Thanks for the clarification. We have both XCVR2450 TX boards (in
the same TX USRP1 ) locked to 2.4GHz ( verified with a specturm
analyzer ) . Now, the receiver XCVR2450 RX board (in the RX USRP1 )
should be able to lock to 2.4GHz as well , right ?
We're using default BPSK mod/demod for this 2 TX x 1 RX experiment.
Both TX boards send BPSK symbols in the same time slot, and are
tuned for 2.4GHz Is there a lock-detect pin on the RX side we can
probe to verify that the RX board has locked to 2.4GHz ?
-Nick
On Fri, Jun 8, 2012 at 7:34 PM, Matt Ettus <address@hidden> wrote:
>
> Each XCVR2450 is already locked to the motherboard crystal. But "bypass it
> with the motherboard's
> X-TAL source" does not make sense. The LO is generated by locking to the
> motherboard crystal source. No bypassing is necessary.
>
> Matt
>
> On Fri, Jun 8, 2012 at 2:12 PM, Nick Iliev <address@hidden> wrote:
>>
>> Hello,
>>
>> we have a USRP1 with 2 XCVR2450 daughtercards. Each XCVR2450 has its
>> own LO however , we would like to bypass it with the motherboard's
>> X-TAL source.
>> Both XCVR2450 daughtercards will then be driven synchronously by the
>> motherboard.
>>
>> Is this possible ? If so, is there a schematic of the XCVR2450 and
>> motherboard which will show the required jumpers and/or SMTs ?
>>
>> If not, which USRP (2 ? ) and daughtercards do we need ?
>>
>> Thank you,
>> Nick and Han
>> UIC wireless lab
>>
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>