equipment, limited-energy parts of equipment, circuits powered
by regulated low-voltage sources, and electronics.
Note Measurement Categories CAT I and CAT O are
equivalent. These test and measurement circuits are not
intended for direct connection to the MAINS building
installations of Measurement Categories CAT II,
CAT III, or CAT IV.
Caution Do not connect the NI 9215 to signals or use
for measurements within Measurement Categories II,
III, or IV.
Safety Guidelines for Hazardous Voltages
You can connect hazardous voltages only to the NI 9215 with
screw terminal and the NI 9215 with spring terminal. Do not
connect hazardous voltages to the NI 9215 with BNC.
If hazardous voltages are connected to the device, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 V
pk
voltage or 60 V DC to earth ground.
Caution Ensure that hazardous voltage wiring is
performed only by qualified personnel adhering to local
electrical standards.
NI 9215 Getting Started Guide | © National Instruments | 5
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