©
National Instruments Corporation
3
TBX-1329 Installation Guide
power prior to removing covers or shields.
Equipment described in this document must be used in an Installation Category II
1
environment per IEC 60664-1. 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 it 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.
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.
You
must
insulate all of your signal connections to the highest voltage with which the
SCXI-1329 can come in contact.
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 26-14 AWG wire with
a minimum voltage rating of 300 V and a temperature value of 60 °C for measuring up
to 300 V.
When connecting or disconnecting signal lines to the SCXI terminal block screw terminals,
make sure the lines are powered off. Potential differences between the lines and the SCXI
ground can create a shock hazard while you connect the lines.
Connections, including power signals to ground and vice versa, that exceed any of the
maximum signal ratings on the SCXI device can create a shock or fire hazard, or can
damage any or all of the boards connected to the SCXI chassis, the host computer, and the
SCXI device. National Instruments is
not
liable for any damages or injuries resulting from
incorrect signal connections.
If hazardous voltages (
≥
30 V
rms
and 42.4 V
peak
or 60 VDC) are present, you
must
connect
a safety earth-ground wire to the terminal block safety-ground lug, shown in Figure 2. This
complies with safety agency requirements and protects against electric shock when the
terminal block is not connected to the chassis. To connect the safety earth-ground to the
safety-ground lug, run an earth-ground wire from the signal source to the terminal block.
1
Category II refers to local-level power distribution, such as that provided by a standard wall outlet.
