![background image](http://html1.mh-extra.com/html/national-instruments/scxi-1190-1191/scxi-1190-1191_user-manual_3487820024.webp)
Chapter 2
Using the SCXI-119X
2-2
www.ni.com
Figure 2-1.
SCXI-119
X
Module Block Diagram
Safety Instructions
Cautions
Do not operate damaged equipment. The safety protection features built into this
instrument can become impaired if the instrument becomes damaged in any way. If the
instrument is damaged, do not use it until service-trained personnel can check its safety.
If necessary, return the instrument to National Instruments for service and repair to ensure
that its safety is not compromised.
Do not operate this instrument in a manner that contradicts the information specified in this
document. Misuse of this instrument 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 instrument. Return the
instrument to National Instruments for service and repair to ensure that its safety is not
compromised.
3A
comA
2A
1A
0A
3B
comB
2B
1B
0B
3C
comC
2C
1C
0C
3D
comD
2D
1D
0D
Rear Signal
Connector
SCXIbus
Relay Controller
and
Drivers
Relay Control Bus
SCXI-1190
SCXI-1191
Hardware
Architecture