NI TRC-8546, Начало работы

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Weight 70 g (2.5 oz)
Length 447 mm to 462 mm(17.6 in. to 18.2 in.)
D-Sub connector jackscrew maximum torque 0.56 N · m (5.0 lb · in.)
Safety
Maximum Voltage
Note
The maximum voltage that can be applied or output without
creating a safety hazard.
Connect only the voltages that are within these limits.
Port-to-COM -40 VDC to +40 VDC max, Measurement Category I
Measurement Category I is for measurement 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 to signals or use for measurements within
Measurement Categories II, III, or IV.
Note
Measurement Categories CAT I and CAT O (Other) 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, and CAT IV.
Port-to-earth ground
Continuous 60 VDC, Measurement Category I
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TRC-8546 Getting Started