SMA connector, bend the cable slightly by hand to align the cable and the
connector. The amount of bending should be minimal. The cables can be
damaged by excessive bending.
2.
Use the Cable A center pin to connect the CH 1+/Q+ connector of the NI 5450/5451 front
panel to the Q+ connector of the NI 5611 front panel.
3.
Use the Cable A center pin to connect the CH 0-/I- connector of the NI 5450/5451 front
panel to the I- connector of the NI 5611 front panel.
4.
Use the Cable A center pin to connect the CH 0+/I+ connector of the NI 5450/5451 front
panel to the I+ connector of the NI 5611 front panel.
5.
Use the Cable B center pin to connect the RF OUT connector of the NI 5650/5651/5652
front panel to the LO IN connector of the NI 5611 front panel.
6.
Use the center pin of a flexible cable to connect the CLK IN connector of the
NI 5450/5451 front panel to the REF OUT2 connector of the NI 5650/5651/5652 front
panel.
7.
Always connect the 50 Ω termination load to the LO OUT connector of the NI 5611 front
panel unless the NI 5611 module is daisy-chained to other devices.
8.
Hand-tighten all SMA cable ends on the SMA connectors after the cable center pins are
correctly aligned and connected. The cable connectors should tighten without much
torque or effort. If a cable bends due to incorrect alignment, remove the cable from the
front panel connector and reconnect the cable center pin on the SMA cable to the SMA
connector.
9.
Carefully complete tightening all SMA connectors to 1 N · m using an appropriate torque
wrench (not included) or torque screwdriver and SMA driver bit. Tighten only until the
wrench clicks.
Caution
Incorrect torque at SMA connections can degrade signal fidelity and
phase-locked loop (PLL) performance and may cause insertion loss. Use an
appropriate torque wrench or torque screwdriver and SMA driver bit to ensure
all SMA connections are properly torqued. SMA connectors for connections to
external equipment may require torque different from 1 N · m, depending on
the connector type, material, and manufacturer.
10. Power on the PXI Express chassis and controller system.
11. Verify that the ACCESS LED is illuminated on all modules. If an LED is not illuminated,
refer to the
Troubleshooting
section of this document.
Related Information
Configuring the NI 5673E in MAX
on page 17
Direct Connections to the NI 5673E
The NI 5673E is a precision RF instrument that is sensitive to ESD and transients. Ensure you
take the following precautions when making direct connections to the NI 5673E to avoid
damaging the device.
Note
Do not apply external signals to the NI 5673E. Applying external signals may
cause damage.
NI PXIe-5673E Getting Started Guide
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© National Instruments
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