Hello,
The first thing I would recommend is to review the section in the
Getting Started with SCXI
guide for the SCXI 1121 module. This
document gives instructions on how to connect sensors to your SCXI
hardware, and contains specific information on how to configure the
jumpers on the SCXI 1121.
The SCXI 1121 contains several groups of jumpers that need to be
configured depending on the type of sensor being connected. With
these jumpers, you need to configure the gain applied to your signal,
what lowpass filter to apply, what type of excitation to apply (voltage
or current) and how much, and whether to enable the bridge completion
circuitry. You'll want to use a gain that when applied to your
signal, will allow it to utilize the +/-10V range of your DAQ
card. Finally, if you are connecting the PCI-MIO-16XE-10 directly to the back of the SCXI 1121 module using an SCXI 1349 adapter, you
will need to configure the amplifier output referencing, which I
recommend using Differential mode as it will provide you with the best
noise rejection. With these jumpers configured correctly, you
will then need to configure your SCXI system in Measurement &
Automation Explorer (MAX). Under Devices & Interfaces,
you will need to create your SCXI chassis and configure the modules and
accessories within that chassis. Make sure that the gain, filter,
and excitation settings for each channel in MAX match the settings
configured using the jumpers. You can then use the test panels to
determine if your measurements are correct.
If you have verified that your hardware is correctly configured and
are still seeing measurement errors, you might need to calibrate your
SCXI 1121. Here is a document that describes this calibration
procedure:
SCXI-1121 Calibration Procedure
I hope this helps!
Regards,
Travis G.
