National Instruments AT E Series - Manual (Page 155)

Appendix C Common Questions
© National Instruments Corporation C-3 AT E Series User Manual
What version of NI-DAQ must I have to program my AT E Series
device?
You must have version 4.9.0 or later for the AT-MIO-16XE-10 and
AT-AI-16XE-10, version 4.8.0 or later for the AT-MIO-16E-1, and
version 4.6.1 or later for all other AT E Series devices.
For AT-MIO-16E-10 and AT-MIO-16DE-10 users, you must have
version 5.04 for Windows 3.1x, or 5.1 or later for Windows 95 and
Windows NT.
What is the best way to test my device without having to program the
device?
If you are using Windows, Measurement & Automation Explorer (MAX)
has a Test Panel option that is available by selecting Devices and
Interfaces and then selecting the device. The Test Panels are excellent tools
for performing simple functional tests of the device, such as analog input,
digital I/O, and counter/timer tests.
I have several DAQ devices that use more total interrupt and DMA
channels than I have available in my PC. What should I do?
Visit ni.com/support/daq for operating system-specific
troubleshooting instructions.
Analog Input and Output
I’m using my device in differential AI mode and I have connected a
differential input signal, but my readings are random and drift rapidly.
What’s wrong?
Check the ground reference connections. The signal may be referenced
to a level that is considered floating with reference to the device ground
reference. Even if you are in differential mode, the signal must still be
referenced to the same ground level as the device reference. There are
various methods of achieving this while maintaining a high common-mode
rejection ratio (CMRR). These methods are outlined in Chapter 4, Signal
Connections.