Data Translation DT9871, User Manual

Page: 43 / 134

Wiring Signals
43
General Wiring Recommendations
Keep the following recommendations in mind when wiring signals to a TEMPpoint,
VOLTpoint, or MEASURpoint instrument:
• Separate power and signal lines by using physically different wiring paths or conduits.
• To avoid noise, do not locate the instrument and cabling next to sources that produce high
electromagnetic fields, such as large electric motors, power lines, solenoids, and electric
arcs, unless the signals are enclosed in a mumetal shield.
• Locate the instrument’s front panel as far away as possible from sources of high or low
temperatures or strong air currents, such as fans.
• Prevent electrostatic discharge to the I/O while the instrument is operational.
• When wiring thermocouples, select an appropriate wire length and gauge for each
thermocouple; in general, use the shortest wire length and largest gauge for the
application to yield best results.
• Use shielded wire for maximum rejection of electrical interference.