National Instruments SCXI-1161 User Manual
Page 19
Chapter 2
Configuration and Installation
© National Instruments Corporation
2-3
Caution:
DO NOT OPERATE THE DEVICE IN AN EXPLOSIVE ATMOSPHERE
OR WHERE THERE MAY BE FLAMMABLE GASES OR FUMES.
KEEP AWAY FROM LIVE CIRCUITS. Do not remove equipment covers
or shields unless you are trained to do so. If signal wires are connected to
the device, hazardous voltages may exist even when the equipment is
turned off. To avoid a shock hazard, do not perform procedures involving
cover or shield removal unless you are qualified to do so and disconnect all
field power prior to removing covers or shields.
Equipment described in this document must be used in an Installation
Category II environment per IEC 664. This category requires local level
supply mains-connected installation.
DO NOT OPERATE DAMAGED EQUIPMENT. The safety protection
features built into this device can become impaired if the device becomes
damaged in any way. If the device is damaged, turn the device off and do
not use until service-trained personnel can check its safety. If necessary,
return the device to National Instruments for service and repair to ensure
that its safety is not compromised.
Do not operate this equipment in a manner that contradicts the
information specified in this document. Misuse of this equipment could
result in a shock hazard.
Terminals are for use only with equipment that has no accessible live parts.
DO NOT SUBSTITUTE PARTS OR MODIFY EQUIPMENT. Because of
the danger of introducing additional hazards, do not install unauthorized
parts or modify the device. Return the device to National Instruments for
service and repair to ensure that its safety features are not compromised.
When using the device with high common-mode voltages, you MUST
insulate your signal wires for the highest input voltage. National
Instruments is NOT liable for any damages or injuries resulting from
inadequate signal wire insulation. Use only 26 to 14 AWG wire with a
voltage rating of 300 V and 60° C for measuring 250 to 300 V; use only
600 V and 60° C for measuring 480 V. Prepare your signal wire by
stripping the insulation no more than 7 mm.
When connecting or disconnecting signal lines to the screw terminals,
make sure the lines are powered off. Potential differences between the lines
and the SCXI ground create a shock hazard while you connect the lines.
!