Chassis Grounding Screw
The cRIO-9032 provides a chassis grounding screw.
Figure 7. cRIO-9032 Chassis Grounding Screw
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1. Chassis Grounding Screw
For EMC compliance, you must connect the cRIO-9032 to earth ground through the chassis
ground screw. Use wire that is 1.31 mm
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(16 AWG) solid copper wire with a maximum length
of 1.5 m (5 ft). Attach the wire to the earth ground of the electrode system of the facility.
Caution
If you use shielded cabling to connect to a C Series module with a plastic
connector, you must attach the cable shield to the chassis grounding terminal using
1.31 mm
2
(16 AWG) or larger wire. Attach a ring lug to the wire and attach the wire
to the chassis grounding terminal. Solder the other end of the wire to the cable
shield. Use shorter wire for better EMC performance.
For more information about ground connections, visit
and enter the Info Code
emcground
.
Internal Real-Time Clock
The cRIO-9032 contains an internal real-time clock that maintains system time when the
cRIO-9032 is powered off. The system clock of the cRIO-9032 is synchronized with the
internal real-time clock at startup. You can set the real-time clock using the BIOS setup utility
or MAX, or you can set the clock programmatically using LabVIEW.
Refer to the specifications on
for the real-time clock accuracy specifications.
CMOS Battery
The cRIO-9032 contains a CMOS battery. The CMOS battery is a lithium cell battery that
stores the system clock information when the cRIO-9032 is powered off. There is only a slight
drain on the CMOS battery when power is applied to the cRIO-9032 power connector. The
rate at which the CMOS battery drains when power is disconnected depends on the ambient
storage temperature. For longer battery life, store the cRIO-9032 at a cooler temperature and
NI cRIO-9032 User Manual
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© National Instruments
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