Service Manuals, User Guides, Schematic Diagrams or docs for : Keithley 193 193_901_01A

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 Instruction Manual
       Model 193
    System DMM




01985, Keithley Instruments, Inc.
       Instrument Division
    Cleveland, Ohio, U.S.A.
  Document Number 193-901-01
                                       SAFETY          PRECAUTIONS

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
this instrumen(.


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.


Inspect the test lends for possible wear, cracks or breaks before each use. If any defects are fl,und,                    wplxe
with test leads that have the same measure of safety as those supplied      with the instrument.


For optimum     safety do not touch the test leads or the instrument  while power is applied to the circuit under
test. Turn the power off and discharge      all capacitors, bcforc connecting  or disconnecting  the instrunwnt.
Always    disconnect   all unused test leads from the instrument.


Do not touch any object which could provide a current path to the common                      side of the circuit under test
or power line (earth) ground.   Always   make measurements   with dry hands                   while standing    on a dry, ill-
s&ted   surface, capable of withstanding   the voltage being measured.


Exercise extreme safety when testing high energy power circuits (AC line or mains,                    ctc). Refer tu the fligh
Energy Circuit Safety Precautions   found in paragraph 2.6 (Basic Measurements).


Do not exceed    the instrument's      maximum    allowable    input     as defined    in the specifications     and operation
section.
                                                        SPECIFICATIONS
1 DC VOLTS                                                        ACCURACY         (5% Digits)**        TEMPERATURE
          MAXIMUM                                                       + (%rdg + counts)                COEFFICIENT          ANALOG
           READING      RESO: L"`rI"N -
                                   ~~~           INPUT        24 Hr.,       90 Days,          1 Yr.,  i (%rdg + counts), TIC SETTLING
  RANGE   (5% Digits)     6%          5%     RESISTANCE      23

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