Configuring Multiple Devices with USB
You can connect multiple devices in the following ways:
•
Multiple USB 2.0 or 3.0 interfaces—One device for each interface
•
Single USB 2.0 or 3.0 interface—Multiple devices connected to a USB 2.0 or 3.0 hub
Tip
Sharing a single USB 2.0 or 3.0 controller interface on your host computer
among multiple devices may reduce overall signal throughput. For maximum signal
throughput, NI recommends that you connect no more than one device per USB
interface.
To configure multiple devices connected to either separate USB 2.0 or 3.0 interfaces or to a
USB hub, assign a different device ID to each USRP device. Because each NI 290x device has
the same default device ID, you must change the device ID for each USRP device before you
connect an additional device to the host computer.
Programming the NI 2900/2901
NI-USRP Instrument Driver
NI-USRP features a set of VIs and properties that exercise the functionality of the NI 290x,
including configuration, control, and other device-specific functions. Refer to the
NI-USRP Help
for information about using the instrument driver in your applications.
Using Examples
The instrument driver examples are instructional tools that demonstrate some of the
functionality of USRP devices. You can use these examples separately or integrate them into
your systems.
Access the examples from within LabVIEW Communications System Design software by
selecting
File
»
Examples
.
Troubleshooting
If an issue persists after you complete a troubleshooting procedure, contact NI technical
support or visit
ni.com/support
.
Why Doesn't the USRP Device Appear in MAX?
MAX does not support NI 290x devices. Use the NI-USRP Configuration Utility instead.
Open the NI-USRP Configuration Utility from the Start menu at
Start
»
All Programs
»
National Instruments
»
NI-USRP
»
NI-USRP Configuration Utility
.
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ni.com
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NI USRP-2900/2901 Getting Started Guide
