On 10/22/2019 02:50 PM, Richard Bell wrote:
I think I sort of figured it out, though the motherboard, subdevice
and channel terminology is still confusing.
1) Each USRP X300 has 1 motherboard
2) Each motherboard has two subdevice slots, A and B
3) Each subdevice slot has 1 channel
If I want to use both subdevices on USRP1 and only one subdevice on
USRP2 then the following settings would make that work:
Device Arguments := "addr0=192.168.10.2,addr1=192.168.11.2"
Mb0: Subdev Spec := A:0 B:0
MB1: Subdev Spec := A:0
Num Channels := 3
To use only 1 subdevice on each USRP this would work:
Device Arguments := "addr0=192.168.10.2,addr1=192.168.11.2"
Mb0: Subdev Spec := A:0
MB1: Subdev Spec := A:0
Num Channels := 2
To use all 4 subdevices at the same time:
Device Arguments := "addr0=192.168.10.2,addr1=192.168.11.2"
Mb0: Subdev Spec := A:0 B:0
MB1: Subdev Spec := A:0 B:0
Num Channels := 4
This (and other pages in the same collection) might help you understand
things:
https://files.ettus.com/manual/page_configuration.html
A "channel" is just a sample stream, and the other configuration
parameters determine which hardware bits-and-pieces are connected to that
channel. Indeed, 1 motherboard == 1 USRP box. Some such "boxes"
have two "slots" (A and B), and others have only one. Within those
slots, there are 1 or more subdevices, with nomenclature that varies
by hardware:
https://files.ettus.com/manual/page_dboards.html
Will there every be a situation where I would do something like A:1
instead of A:0 in the subdevice specs?
On Tue, Oct 22, 2019 at 11:25 AM Marcus D Leech
<[email protected] <mailto:[email protected]>> wrote:
Could you share your flow graph with us?
What daughtercards do you have installed?
Sent from my iPhone
> On Oct 22, 2019, at 2:16 PM, Richard Bell via USRP-users
<[email protected] <mailto:[email protected]>>
wrote:
>
>
> Hello,
>
> I'm a little confused about how I should distinguish between two
different USRPs X300's and the two different motherboards per USRP
X300 in this type of setup. I am feeding a 10 MHz ref and PPS ref
to both USRPs. What I have right now is a gr flowgraph with a
single USRP Sink block that I have configured with the following
device address
>
> "addr0=192.168.10.2,addr1=192.168.11.2"
>
> and I have selected
>
> Num Mboards = 2
> Num Channels = 2
>
> But this setup only uses the addr0=192.168.10.2 USRP to receive
on both RFA and RFB ports. I would like to configure receiving on
192.168.10.2 RFA TX/RX and 192.168.11.2 RFA TX/RX.
>
> How do I configure this properly?
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