Caution Do not connect the NI 9215 to signals or use
for measurements within Measurement Categories III
or IV.
NI 9215 with BNC Safety Voltages
Connect only voltages that are within the following limits.
AI+-to-AI- ±30 V maximum
Isolation
Channel-to-channel None
Channel-to-earth ground
Continuous 60 VDC,
Measurement Category I
Withstand 1,500 Vrms, verified by a 5 s
dielectric withstand test
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
4 | ni.com | NI 9215 Getting Started Guide
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