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Discussion and technical support related to USRP, UHD, RFNoC

Tx/RX vs RX2 Ettus N320

jmaloyan@umass.edu

Thu, Mar 9, 2023 2:41 AM

Hello,

I am a little confused about the naming regarding the TX/RX ports on the Ettus N321/N320. If I specify a channel(i.e channel 0) for receive, does that mean RX2 will be active, or will TX/RX port be actively receiving? And if TX/RX can recieve, does that mean the N320/N321 has up to 4 RX channels?

Thanks

Joe

Hello, I am a little confused about the naming regarding the TX/RX ports on the Ettus N321/N320. If I specify a channel(i.e channel 0) for receive, does that mean RX2 will be active, or will TX/RX port be actively receiving? And if TX/RX can recieve, does that mean the N320/N321 has up to 4 RX channels? Thanks Joe

Marcus D. Leech

Thu, Mar 9, 2023 2:45 AM

On 08/03/2023 21:41, jmaloyan@umass.edu wrote:

Hello,

I am a little confused about the naming regarding the TX/RX ports on
the Ettus N321/N320. If I specify a channel(i.e channel 0) for
receive, does that mean RX2 will be active, or will TX/RX port be
actively receiving? And if TX/RX can recieve, does that mean the
N320/N321 has up to 4 RX channels?

Thanks

Joe

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Any given RX channel can either be connected to the corresponding RX2
OR TX/RX port. A TX channel can only ever
be connected to its corresponding RX/TX port.

It's just an antenna switch for a receive channel. For half-duplex
communications techniques it's often the case that a
single antenna is used and alternates between TX and RX when required.

On 08/03/2023 21:41, jmaloyan@umass.edu wrote: > > Hello, > > I am a little confused about the naming regarding the TX/RX ports on > the Ettus N321/N320. If I specify a channel(i.e channel 0) for > receive, does that mean RX2 will be active, or will TX/RX port be > actively receiving? And if TX/RX can recieve, does that mean the > N320/N321 has up to 4 RX channels? > > > Thanks > > Joe > > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-leave@lists.ettus.com Any given RX channel can either be connected to the corresponding RX2 *OR* TX/RX port. A TX channel can only ever be connected to its corresponding RX/TX port. It's just an antenna switch for a receive channel. For half-duplex communications techniques it's often the case that a single antenna is used and alternates between TX and RX when required.