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Configuring the Digitizer Modules 17Chapter 1
Warnings and Cautions
WARNING DANGEROUS VOLTAGES. The E1563A and E1564A Digitizers are
capable of measuring voltages up to 256V maximum. Voltage levels
above the levels specified for accessible connectors or cable ends
could cause bodily injury or death to an operator. Special precautions
must be adhered to (discussed below) when applying voltages in
excess of 60 Vdc, 30 Vac rms or 42.4 Vac peak for a continuous,
complex waveform.
WARNING MODULE CONNECTORS MUST NOT BE OPERATOR-ACCESSABLE.
Module connectors and test signal cables connected to them must be
made NON-accessible to an operator who has not been told to access
them. It is a supervisor’s responsibility to advise an operator that
dangerous voltages exist when the operator is instructed to access
connectors and cables carrying these voltages.
Making cables and connectors that carry hazardous voltages
inaccessible is a protective measure keeping an operator from
inadvertent or unknowing contact with these harmful voltages.
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).
WARNING ADEQUATE INSULATION IS REQUIRED. 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.
WARNING TIGHTEN MOUNTING SCREWS. Tighten the faceplate mounting
screws after installing the module in the mainframe to prevent
electric shock in case of equipment or field wiring failure.