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Physical characteristics, Safety, Safety voltages – National Instruments NI 9481 User Manual

Page 14

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NI 9481 Operating Instructions and Specifications

14

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Physical Characteristics

If you need to clean the module, wipe it with a dry towel.

Screw-terminal wiring ...................... 12 to 24 AWG copper

conductor wire with 10 mm
(0.39 in.) of insulation
stripped from the end

Torque for screw terminals ............... 0.5 to 0.6 N · m

(4.4 to 5.3 lb · in.)

Ferrules ............................................. 0.25 mm

2

to 2.5 mm

2

Weight............................................... 150 g (5.3 oz)

Safety

Safety Voltages

Connect only voltages that are within the following limits.

CHa-to-CHb...................................... 250 V

rms

max,

Measurement Category II

Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as