Table 27. NI USRP-2950R Module Back Panel Connectors (Continued)
Connector
Use
REF IN
Input terminal for an external reference signal for the LO on the device.
REF IN is an SMA (f) connector with an impedance of 50 Ω and is a
single-ended reference input. REF IN accepts a 10 MHz signal with a
minimum input power of 0 dBm (.632 V
pk-pk
) and a maximum input power
of 15 dBm (3.56 V
pk-pk
) for a square wave or sine wave.
PCIe x4
This port accepts a PCI Express Generation 1, x4 bus connection through
an MXI Express four-lane cable.
PPS TRIG
OUT
Output terminal for PPS timing reference. PPS TRIG OUT is an SMA (f)
connector with an impedance of 50 Ω and is a single-ended input.
PPS TRIG OUT outputs 0 V to 3.3 V TTL. You can also use this port as a
triggered output (TRIG OUT) that you control using NI-USRP software.
PPS TRIG IN
Input terminal for PPS timing reference. PPS TRIG IN is an SMA (f)
connector with an impedance of 50 Ω and 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 an SMA (f)
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.
NI USRP-2952R
Figure 22. NI USRP-2952R 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
NI USRP-2952R
400 MHz - 4.4 GHz
PWR
NI USRP-29xx Getting Started Guide
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© National Instruments
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