One possible reason is that the channels could be labeled incorrectly on your device. When you receive the NI USB-6008/6009, there are labels that you are supposed to adhere to the device. Make sure you place Labels 1 - 16
on the Analog
side of the device and Labels 17 - 32
on the Digital
side of the device. Pinouts for these devices are shown in the "Additional Information" section.
Another thing to note is that the pinouts for the NI USB 6008/6009 OEM cards are not the same as the pinouts for the non-OEM version. If you are using the OEM version, the correct pin diagrams (shown in "Additional Information") are found in the NI USB 6008/6009 OEM User Guide
. Please note that the pinout diagram in Measurement and Automation Explorer is for the non-OEM version. If you are using the correct pinouts and are still reading incorrect values from your USB device, please contact NI Technical Support.