National Instruments IMAQ PCI-1422 User Manual

National Instruments IMAQ PCI-1422 User Manual Manual pdf 19 page image

Chapter 2 Installation© National Instruments Corporation 2-5 IMAQ PCI/PXI-1422 User ManualInsulate signal connections for the maximum voltage for which the device is rated. Do notexceed the maximum ratings for the device. Remove power from signal lines beforeconnection 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 sourceof 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 thebuilding installation. Examples include measurements on distributionboards, circuit-breakers, wiring (including cables), bus bars, junctionboxes, switches, socket outlets in the fixed installation, equipment forindustrial use, and some other types of equipment, such as stationarymotors permanently connected to the fixed installation.• Installation Category II —for measurements performed on circuitsdirectly connected to the low-voltage installation. Examples includemeasurements on household appliances, portable tools, and othersimilar equipment.• Installation Category I—for measurements performed on circuits notdirectly connected to mains. Examples include measurements oncircuits 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 completelydry and free from contaminants before returning it to service.UnpackingYour PCI/PXI-1422 is shipped in an antistatic package to preventelectrostatic damage to the board. Electrostatic discharge can damageseveral components on the board. To avoid such damage in handling theboard, 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 chassisbefore removing the board from the package.