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 TX1 RX 1 or RX2 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 TX1 RX 1 or RX2 connector, ensure that the device cannot generate signal
transients greater than the RF and DC specifications of the USRP device TX1 RX 1 or
RX2 connector.
USRP-2900 Front Panel, Back Panel, and LEDs
Front Panel
NI USRP-2900
70 MHz–6 GHz
ESD
SENSITIVE
TX OUTPUT MAX +20 dBm, RX INPUT MAX –15 dBm, ALL RF PORTS 50
Ω
RF 0
TX1 RX1
RX2
Designed by Ettus Research
Table 1. Connector Descriptions
Connector Description
RX2 Input terminal for the RF signal. RX2 is an SMA (f) connector with an
impedance of 50 Ω and is a single-ended input channel.
TX1 RX1 Input and output terminal for the RF signal. TX1 RX1 is an SMA (f) connector
with an impedance of 50 Ω and is a single-ended input or output channel.
USRP-2900/2901 Getting Started Guide | © National Instruments | 11
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