National Instruments SCXI-1161 User Manual
Page 20
Chapter 2
Configuration and Installation
2-4
© National Instruments Corporation
Connect the signal wires to the screw terminals by inserting the stripped
end of the wire full into the terminals. Tighten the terminals to a torque
of 5 to 7 in.-lb.
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 high voltages (
≥
30 V
rms
and 42.4 V
peak
or 60 VDC) are present, YOU
MUST CONNECT A SAFETY EARTH GROUND WIRE TO THE
SAFETY GROUND SOLDER LUG. 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 solder lug, run an earth ground wire in the cable from the
signal source to the terminal block. National Instruments is NOT liable for
any damages or injuries resulting from inadequate safety earth ground
connections.
Do not loosen or re-orient the safety ground solder lug hardware when
connecting the safety ground wire. To do so reduces the safety isolation
between the high voltage and safety ground.
Clean devices and terminal blocks by brushing off light dust with a soft,
nonmetallic brush. Remove other contaminants with deionized water and a
stiff nonmetallic brush. The unit must be completely dry and free from
contaminants before returning to service.
Caution:
Use this module only with a UL listed SCXI chassis.
!