A lit green LED in the upper left corner of the gigabit Ethernet connection port on the device
front panel indicates a gigabit Ethernet connection.
Front Panels and Connectors
Direct Connections to the Device
The USRP device is a precision RF instrument that is sensitive to ESD and transients. Ensure
you take the following precautions when making direct connections to the USRP device to
avoid damaging the device.
Notice
Apply external signals only while the USRP device is powered on.
Applying external signals while the device is powered off may cause damage.
•
Ensure you are properly grounded when manipulating cables or antennas connected to the
USRP device TX 1 RX 1 or RX 2 connector.
•
If you are using nonisolated devices, such as a nonisolated RF antenna, ensure the devices
are maintained in a static-free environment.
•
If you are using an active device, such as a preamplifier or switch routed to the USRP
device TX 1 RX 1 or RX 2 connector, ensure that the device cannot generate signal
transients greater than the RF and DC specifications of the USRP device TX 1 RX 1 or
RX 2 connector.
USRP-2920 Front Panel and LEDs
MIMO EXPANSION
GB ETHERNET
RX 1
TX 1
REF IN
PPS IN
A
C
E
B
D
F
NI USRP-2920
50 MHz - 2.2 GHz
RX 2
POWER
6 V 3 A
Table 5. Connector Descriptions
Connector
Description
RX 1
TX 1
Input and output terminal for the RF signal. RX 1 TX 1 is an SMA (f)
connector with an impedance of 50 Ω and is a single-ended input or
output channel.
RX 2
Input terminal for the RF signal. RX 2 is an SMA (f) connector with an
impedance of 50 Ω and is a single-ended input channel.
USRP-2920/2921/2922 Getting Started Guide
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© National Instruments
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