Measurement Computing DBK207 - Manual (Page 3)

Warnings, Cautions, and Tips
WARNING
Ensure that hard-wire emergency over-ride circuitry exists for all applications that
make use of dangerous switch-loads. Do not operate such switch-loads unless
emergency over-ride circuitry is present.
CAUTION
Turn off power to the host PC and externally connected equipment prior to connecting
cables or signal lines to the DBK. Electric shock or damage to equipment can result
even under low-voltage conditions.
Take ESD precautions (packaging, proper handling, grounded wrist strap, etc.)
Use care to avoid touching board surfaces and onboard components. Only handle
boards by their edges (or ORBs, if applicable). Ensure boards do not come into contact
with foreign elements such as oils, water, and industrial particulate.
Do not confuse connectors. Ensure that you only connect P1 I/Os to P1,
P2 I/Os to P2, and P3 I/Os to P3. Improper connection may result in equipment
damage.
1. Ensure that hard-wire emergency over-ride circuity exists for all applications that make use of
dangerous switch-loads. Do not operate such switch-loads unless emergency over-ride circuitry is
present.
2. Provide raceways (protective wiring routes) for all external I/O wiring.
3. Keep external I/O wiring away from ribbon cables.
4. Keep external I/O wiring away from low-voltage signal wiring.
5. Provide appropriate strain-relief and physical restraint to ensure that the wiring is held securely in the
intended position, and without strain.
6. Ensure that all wiring with >50V potential is identified by the appropriate color codes and that
warning labels are clearly visible.
7. Provide physical protection for the interface board. The level of protection is dependent upon the
board’s operating environment.
Partial DBK207/CJC
DBK Option Cards and Modules 987594 DBK207 and DBK207/CJC, pg. 3