Fwd: How to use 2 USRPs on 1 PC

GNU Radio
1

You can use multiple usrps on one PC. To select the USRP that you want
to use, you can use the which parameter of the usrp source
constructor:

src = usrp.source_s(which=)

This is a number between 0…N.

You can identify which is which by looking at the serial number of your
usrps:
src.serial_number()

These might not be exposed in GRC, so you need to edit this in the
python code.

Also, you can transmit and receive simultaneously also with just one
usrp.

I have two usrps on one machine in continuous operation. One usrp is
using the computer’s usb bus, and the other is hooked to a PCI usb
card, to ensure full bandwidth on both usrps. But unless you need full
bandwidth on each device, you probably don’t need to do this.

juha

2

Thank you for your answer.

Now I see how it works.

I connect one USRP or two USRPs on a PC.
It recongnizes well.

However, when I execute a flow graph, it immediately disconnects a
connection.
I use Ubuntu 10.x with VMWare, on the top of Mac OS X 10.6.4

Might it be a problematic that I do a test on a Virtual Machine

2010/10/29 Juha V. [email protected]