Connector
Description
PPS TRIG IN accepts 0 V to 3.3 V TTL and 0 V to 5 V TTL signals. You can also use
this port as a triggered input (TRIG IN) that you control using NI-USRP software.
GPS ANT
Input terminal for the GPS antenna signal. GPS ANT is an SMA (f) connector with a
maximum input power of -15 dBm and an output of DC 5 V to power an active
antenna.
Notice
Do not terminate the GPS ANT port if you do not use it.
Table 10. Connector Descriptions
USRP-2944 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
RF 0
RF 1
JTAG
AUX I/O
3.3 VDC MAX
Designed by Ettus Research
PWR
NI USRP-2944R
10 MHz - 6 GHz (160 MHz BW)
Connector
Use
JTAG
A USB port that connects the host computer to the device FPGA for recovery
purposes. This port can be used with the Xilinx iMPACT configuration tool to
temporarily load a new bitfile.
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 11. Connector Descriptions
© National Instruments
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USRP-2940/2942/2943/2944/2945 Getting Started