WARNINGS (contd.)
In a cleanroom environment, some switch modules (such as the E2270A, 2271A, 2273A, etc) are capable of switching voltages that could cause bodily injury or death to an operator. Special precautions must be adhered to (discussed below) when applying voltages in excess of 60Vdc, 30Vac rms, or 42.4 Vac peak for a continuous, complex waveform.
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 inadvertant 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).
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.
