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.
Cable Requirements for EMC Compliance
Select and install cables for the NI-9401 in accordance with the following
requirements:
■
Install a clamp-on ferrite bead (782803-01) on the cable that you are
connecting to NI-9401.
■
The clamp-on ferrite bead must be connected to the cable as close to the
module as possible. Placing the ferrite elsewhere on the cable noticeably
impairs its effectiveness.
Figure 1. Installing a Ferrite Bead
1
2
1. Installing a ferrite bead on a 25-pin DSUB cable.
2. Installing a ferrite bead on the cable of the terminal block.
Special Conditions for Marine Applications
Some products are approved for marine (shipboard) applications. To verify marine
approval certification for a product, visit
, search by
model number, and click the appropriate link.
Notice
In order to meet the EMC requirements for marine applications,
install the product in a shielded enclosure with shielded and/or filtered
power and input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes and cables to
ensure that the desired EMC performance is attained.
ni.com
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NI-9401 Getting Started
