Specifications
4 Safety and Support Information
Ground the System
To minimize shock hazard, the 
system chassis must have a 
hard-wired connection to an 
electrical protective earth 
ground. The system must also be 
connected to the ac power mains 
through a power cable that 
includes a protective earth 
conductor. The power cable 
ground wire must be connected 
to an electrical ground (safety 
ground) at the power outlet. Any 
interruption of the protective 
grounding will cause a potential 
shock hazard that could result in 
personal injury.
Fuses
Use only fuses with the required 
rated current, voltage, and 
specified type (normal blow, 
time delay). Do not use repaired 
fuses or short-circuited fuse 
holders. To do so could cause a 
shock or fire hazard.
Operator Safety Information
MODULE CONNECTORS AND 
TEST SIGNAL CABLES 
CONNECTED TO THEM 
CANNOT BE OPERATOR 
ACCESSIBLE: Cables and 
connectors are considered 
inaccessible if a tool (e.g., 
screwdriver, wrench, socket, 
etc.) or a key (equipment in a 
locked cabinet) is required to 
gain access to them. 
Additionally, the operator 
cannot have access to a 
conductive surface connected to 
any cable conductor (High, Low 
or Guard).
ASSURE THE EQUIPMENT 
UNDER TEST HAS 
ADEQUATE INSULATION 
BETWEEN THE CABLE 
CONNECTIONS AND ANY 
OPERATOR-ACCESSIBLE 
PARTS (DOORS, COVERS, 
PANELS, SHIELDS, CASES, 
CABINETS, ETC.): Verify there 
are multiple and sufficient 
protective means (rated for the 
voltages you are applying) to 
assure the operator will NOT 
come into contact with any 
energized conductor even if one 
of the protective means fails to 
work as intended. For example, 
the inner side of a case, cabinet, 
door, cover or panel can be 
covered with an insulating 
material as well as routing the 
test cables to the module’s front 
panel connectors through 
non-conductive, flexible conduit 
such as that used in electrical 
power distribution.
Safety Symbols and 
Regulatory Markings
Symbols and markings on the 
system, in manuals and on 
instruments alert you to 
potential risks, provide 
information about conditions, 
and comply with international 
regulations. Table 1 defines the 
symbols and markings you may 
encounter.
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