■
Ensure you are properly grounded when manipulating cables or antennas
connected to the USRP RIO device TX 1 RX 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 RIO device TX 1 RX 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 RIO device TX 1 RX 1, RX 1, or RX 2 connector.
USRP-2940 Front Panel, Back Panel, and LEDs
Front Panel
LINK
TX OUTPUT MAX +20 dBm, RX INPUT MAX -15 dBm, ALL RF PORTS 50 Ω
TX1 RX1
RX2
GPS
PPS
REF
TX1 RX1
RX2
JTAG
PWR
Pin
Description
JTAG
A USB port that connects the host computer to the device FPGA for development
and debugging. LabVIEW FPGA does not currently support configuring or
programming the device FPGA using the JTAG connector.
RF 0 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.
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.
AUX I/O
General-purpose I/O (GPIO) port. AUX I/O is controlled by the FPGA.
RF 1 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.
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.
Table 8. Connector Descriptions
ni.com
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USRP-2940/2942/2943/2944/2945 Getting Started
