NI myDAQ User Guide | © National Instruments | 3
Electromagnetic Compatibility Guidelines
Cautions To ensure the specified EMC performance:
• The USB cable must be less than 2.0 m (6.6 ft) in length.
• The length of any wire or cable connected to the 20-pin screw terminal
connector must be no longer than 0.3 m (1 ft).
• The length of any wire or cable connected to the Audio or DMM ports must be
no longer than 3 m (10 ft).
This product was tested and complies with the regulatory requirements and limits for
electromagnetic compatibility (EMC) as stated in the product specifications. These requirements
and limits are designed to provide reasonable protection against harmful interference when the
product is operated in its intended operational electromagnetic environment.
This product is intended for use in residential, commercial, and industrial locations. There is no
guarantee that harmful interference will not occur in a particular installation or when the product
is connected to a test object. To minimize the potential for the product to cause interference to
radio and television reception or to experience unacceptable performance degradation, install
and use this product in strict accordance with the instructions in the product documentation.
Furthermore, any changes or modifications to the product not expressly approved by National
Instruments could void your authority to operate it under your local regulatory rules.
NI myDAQ Hardware Overview
NI myDAQ provides analog input (AI), analog output (AO), digital input and output (DIO),
audio, power supplies, and digital multimeter (DMM) functions in a compact USB device.
Tip The Common Terms and Acronyms section has a list of acronyms and terms
that you will see in this manual, and in many engineering and measurement
documents and websites.
Integrated circuits supplied by Texas Instruments form the power and analog I/O subsystems of
NI myDAQ. Figure 2 depicts the arrangement and function of the NI myDAQ subsystems. Refer
to Table 5 for more information on all of the Texas Instruments components used in NI myDAQ.
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