Chapter 2
Installation
©
National Instruments Corporation
2-5
Insulate signal connections for the maximum voltage for which the device is rated. Do
not
exceed the maximum ratings for the device. Remove power from signal lines before
connection to or disconnection from the device.
Operate this device only at or below the installation category stated in the specifications.
Installation categories are listed below.
•
Installation Category IV—for measurements performed at the source
of the low-voltage installation. Examples include electricity meters,
measurements on primary overcurrent protection devices, and ripple-
control units.
•
Installation Category III —for measurements performed in the
building installation. Examples include measurements on distribution
boards, circuit-breakers, wiring (including cables), bus bars, junction
boxes, switches, socket outlets in the fixed installation, equipment for
industrial use, and some other types of equipment, such as stationary
motors permanently connected to the fixed installation.
•
Installation Category II —for measurements performed on circuits
directly connected to the low-voltage installation. Examples include
measurements on household appliances, portable tools, and other
similar equipment.
•
Installation Category I—for measurements performed on circuits not
directly connected to mains. Examples include measurements on
circuits not derived from mains, and specially-protected (internal)
mains-derived circuits.
Clean the device and accessories by brushing off light dust with a soft, nonmetallic brush.
Remove other contaminants with a stiff, nonmetallic brush. The unit must be completely
dry and free from contaminants before returning it to service.
Unpacking
Your PCI/PXI-1422 is shipped in an antistatic package to prevent
electrostatic damage to the board. Electrostatic discharge can damage
several components on the board. To avoid such damage in handling the
board, take the following precautions:
•
Ground yourself via a grounding strap or by holding a grounded object.
•
Touch the antistatic package to a metal part of your computer chassis
before removing the board from the package.
