© National Instruments Corporation
3-1
SCXI-1124 User Manual
Chapter 3
Signal Connections
This chapter describes the signal connections to the SCXI-1124 module via the
SCXI-1124 front connector and via the rear signal connector, and includes specifications and
connection instructions for the SCXI-1124 connector signals.
The following warnings contain important safety information concerning hazardous voltages.
!
Cautions: D
O NOT OPERATE THE MODULE IN AN EXPLOSIVE
ATMOSPHERE OR WHERE
THERE MAY BE FLAMMABLE GASES OR FUMES
.
K
EEP 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 is rated to be used in an Installation
Category II environment per IEC 664. This category requires local level
supply mains-connected installation.
D
O NOT OPERATE DAMAGED EQUIPMENT
. The safety protection features
built into this device can become impaired if the module becomes damaged
in any way. If the module is damaged, turn the module 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
harard.
Terminals are for use only with equipment that has no accessible live parts.
D
O 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 module to National Instruments for service
and repair to ensure that its safety features are not compromised.
When using the module with high common-mode voltages, you
MUST
insulate your signal wires appropriately. 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
