Connector
Use
1G/10G ETH Two SFP+ input terminals used for 1G ETH or 10G ETH connectivity with the host
driver. Not currently supported in LabVIEW FPGA.
LO OUT 1 IF2 Output terminal for the IF LO signal exported by RF 1. LO OUT 1 IF2 is a female
SMA connector with an impedance of 50 Ω.
LO OUT 1 IF1 Output terminal for the RF LO signal exported by RF 1. LO OUT 1 IF1 is a female
SMA connector with an impedance of 50 Ω.
REF OUT
Output terminal for an external reference signal for the LO on the device. REF OUT
is a female SMA connector with an impedance of 50 Ω, and it is a single-ended
reference output. The output signal at this connector is 10 MHz at 3.3 V.
REF IN
Input terminal for an external reference signal for the LO on the device. REF IN is a
female SMA connector with an impedance of 50 Ω, and it is a single-ended
reference input. REF IN accepts a 10 MHz signal with a minimum input power of
0 dBm (0.632 V
pk-pk
) and a maximum input power of 15 dBm (3.56 V
pk-pk
) for a
square wave or sine wave.
LO IN 0 IF2
Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This
signal can be used as the LO source for an RF 0 channel by selecting
external
on
that channel's LO source setting. LO IN 0 IF2 is a female SMA connector with an
impedance of 50 Ω.
LO IN 0 IF1
Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This
signal can be used as the LO source for an RF 0 channel by selecting
external
on
that channel's LO source setting. LO IN 0 IF1 is a female SMA connector with an
impedance of 50 Ω.
PCIe x4
Port for a PCI Express Generation 1, x4 bus connection through an MXI Express
four-lane cable.
LO IN 1 IF2
Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This
signal can be used as the LO source for an RF 0 channel by selecting
external
on
that channel's LO source setting. LO IN 1 IF2 is a female SMA connector with an
impedance of 50 Ω.
LO IN 1 IF1
Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This
signal can be used as the LO source for an RF 0 channel by selecting
external
on
that channel's LO source setting. LO IN 1 IF1 is a female SMA connector with an
impedance of 50 Ω.
PPS TRIG OUT Output terminal for the pulse per second (PPS) timing reference. PPS TRIG OUT is
a female SMA connector with an impedance of 50 Ω, and it is a single-ended input.
The output signal is 0 V to 3.3 V TTL. You can also use this port as triggered output
(TRIG OUT) that you program with the PPS Trig Out I/O signal.
ni.com
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USRP-2940/2942/2943/2944/2945 Getting Started
