Safety Voltages
Connect only voltages that are within the following limits:
Channel-to-earth ground
±30 V maximum,
Measurement Category I
Isolation
Channel-to-channel
None
Channel-to-earth ground
None
Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as
MAINS
voltage. MAINS is a hazardous live
electrical supply system that powers equipment. This category is
for measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
equipment, limited-energy parts of equipment, circuits powered
by regulated low-voltage sources, and electronics.
Caution
Do not connect the NI 9234 to signals or use
for measurements within Measurement Categories II,
III, or IV.
NI 9234 Getting Started Guide
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© National Instruments
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