2
|
ni.com
|
GPIB Hardware Installation Guide and Specifications
protection against harmful interference when the hardware is operated in the intended
electromagnetic environment. In special cases, for example when either highly sensitive or noisy
hardware is being used in close proximity, additional mitigation measures may have to be
employed to minimize the potential for electromagnetic interference.
While this hardware is compliant with the applicable regulatory EMC requirements, there is no
guarantee that interference will not occur in a particular installation. To minimize the potential
for the hardware to cause interference to radio and television reception or to experience
unacceptable performance degradation, install and use this hardware in strict accordance with
the instructions in the hardware documentation and the DoC
1
.
If this hardware does cause interference with licensed radio communications services or other
nearby electronics, which can be determined by turning the hardware off and on, you are
encouraged to try to correct the interference by one or more of the following measures:
•
Reorient the antenna of the receiver (the device suffering interference).
•
Relocate the transmitter (the device generating interference) with respect to the receiver.
•
Plug the transmitter into a different outlet so that the transmitter and the receiver are on
different branch circuits.
Some hardware may require the use of a metal, shielded enclosure (windowless version) to meet
the EMC requirements for special EMC environments such as, for marine use or in heavy
industrial areas. Refer to the hardware’s user documentation and the DoC
1
for product
installation requirements.
When the hardware is connected to a test object or to test leads, the system may become more
sensitive to disturbances or may cause interference in the local electromagnetic environment.
Operation of this hardware in a residential area is likely to cause harmful interference. Users are
required to correct the interference at their own expense or cease operation of the hardware.
Changes or modifications not expressly approved by National Instruments could void the user’s
right to operate the hardware under the local regulatory rules.
GPIB-USB Interfaces
Caution
Ground loops create an electric shock hazard and can cause damage to
your GPIB-USB hardware, your computer, and other system components. A ground
loop can occur when your computer and one or more connected instruments do not
share the same ground potential.
1
The Declaration of Conformity (DoC) contains important EMC compliance information and instructions
for the user or installer. To obtain the DoC for this product, visit
ni.com/certification
, search by
model number or product line, and click the appropriate link in the Certification column.
