Table 8. USRP-2942 Module Back Panel Connectors (Continued)
Connector Use
PPS TRIG IN Input terminal for pulse per second (PPS) timing reference. PPS TRIG IN
is a female SMA connector with an impedance of 50 Ω, and it is a single-
ended input channel. 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 a female SMA
connector with a maximum input power of -15 dBm and an output of
DC 5 V to power an active antenna.
Caution Do not terminate the GPS ANT port if you do not use
it.
USRP-2943
Figure 9. USRP-2943 Front Panel
LINK
TX OUTPUT MAX +20 dBm, RX INPUT MAX -15 dBm, ALL RF PORTS 50 Ω
TX1 RX1 RX2GPSPPSREF
TX1 RX1 RX2
JTAG
PWR
Table 9. USRP-2943 Module Front Panel Connectors
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.
20 | ni.com | USRP-2940/2942/2943/2944/2945 Getting Started Guide
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