01985, Keithley Instruments, Inc.
Cleveland, Ohio, U.S.A.
Document Number 193-901-01
The following safety precautions should be observed before operating the Model `I93
This instrument is intended for use by qualified personnel who recognize shock hazards ,Ind arc f~u~~ili.~t
with the safety precautions required to avoid possible injury. Read over the manual carefully bei~rc upcrating
Exercise extreme caution when a shock hazard is present at the instrument's input. The American Nati,,nal
Standards Institute (ANSI) states that a shock hazards exists when voltage levels greater than XlV rms 01
42.4V peak are present. A good safety practice is to expect that a hazardous voltage is present in any unknown
circuit before measuring.