©
National Instruments Corp.
15
NI 9870 Operating Instructions
Caution
Do not connect to signals or use for
measurements within Measurement Categories II, III,
or IV.
Isolation Voltages
Port-to-earth ground
Continuous ................................. 60 VDC,
Measurement Category I up
to 5,000 m altitude
Withstand
up to 2,000 m altitude .......... 1000 V
rms
, verified by a 5 s
dielectric withstand test
up to 5,000 m altitude .......... 500 V
rms
, verified by a 5 s
dielectric withstand test
Hazardous Locations
U.S. (UL) .......................................... Class I, Division 2,
Groups A, B, C, D, T4;
Class I, Zone 2,
AEx nA II T4
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