User manual

Appendix B Frequently Asked Questions
BNC-2090A User Manual B-2 ni.com
Can I use the SCXI resistor kit to build attenuators for my
BNC-2090A?
Yes. You can use the SCXI resistor kit, which consists of four high
precision 249 Ω resistors, to build attenuators (voltage dividers) for the
BNC-2090A. Refer to the Building Attenuators (Voltage Dividers) section
of Chapter 3, Signal Conditioning, for more information about building
attenuators for the BNC-2090A.
Can I configure the BNC-2090A to measure current?
Yes. You can use a pair of channels to route current through the a sense
resistor located in position E. Refer to the Analog Input Signal
Conditioning section of Chapter 3, Signal Conditioning, for the exact
location of this component.
Caution When adding custom signal conditioning, do not exceed the components’ power
dissipation ratings. Limit current into the BNC-2090A to ≤100 mA.
Set the SE/DIFF switch to SE mode and the RSE/NRSE switch to RSE.
This connects the BNC shields to AI GND. Configure the DAQ device for
a differential measurement across the sense resistor.
Can I attach 68-pin DAQ cables to the front and back of the
BNC-2090A to make it a pass-through?
Yes .