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196_901_01D


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 Model 196
System DMM
 instruction Manual




            Contains Operating and Servicing Information
                                                         WARRANTY
Keithley Instruments, Inc. warrants this product to be free from defects in material and tiorkmanship for a period of 1 year from date of
shipment.



Keithley Instruments, Inc. warrants the following items for90 days from the date of shipment: probes, cables, rechargeable batteries,
diskettes, and documentation.



During the warranty period, we will, at OUT
                                          option, either repair or replace any product that proves to be defective.~~   :



To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Ct&e.land, Ohio. YOUwill
be given Prompt assistance and return instruciions. Send the product, transport&~ prepaid, to the indicated service facility. Repairs
will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for the balance of the origi-
nal warranty period, or at least POdays.



                                               LIMITATION OF WARRANTY

This warranty does not apply to defects resulting from product modification without Keithley's express written consent, or misuse of
any product or part. This warranty also does not apply to fuses,~software, non-rechargeable batteries, damage from battery leakage,~or
problems arising~55Zi-incmii~l wear or failure to follow instructions.



THIS WARRANTY IS IN LIEU OF ALL OTtiERWARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PRO\IIDED HEREIN ARE
BUYER'S SOLE AND EXCLUSIVE REMEDIES.



NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT, JNDI-
RECT, SPECIAL, INCIDENTALOR CONsE:QUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS JNSTRIJM.ENTS AND
SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF
SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIMITED To: COSTS OFTREMOVAL
AND INSTALLATION, Lossm SUSTAINED As THE RESULT OF IN3URY TO ANY PERSON, OR DAMAGETO PROPERTY.
Model 196~ System DMM
  Instruction Manual




    01986, Keithley Instruments, Inc.
       Test Instrumentation Group
           All rights reserved.
        Cleveland, Ohio, U.S.A.
      Fourth PrintingJanuary 1992
  Document Number: 196-901-01 Rev. 0
                                                                 Safety Precautions

The following safety precautions should be observed befoE         Do not exceed the maximum signal levels of the instruments
using this product and any associated inshvmentation. Al-         and accessories, as defined in the specifications and operating
though some instruments and accessories would normally be         inform&ion, and a~ shown on the instrument or test fixture
used with non-hazardousvoltages, therearesituatio~iis where       rear panel, or switchiig card.
hazardous conditions may be present
                                                                  Do not connect switching cards directly to unlimited power
This product is intended for use by qualiied personnel who        circuits. They are intended to be used with impedance limit-
iecognize shock hazards and are familiar with the safety pre-     ed sources. NEVER cbnnect switching cards directly to AC
cautions required to avoid possible injury. Read the operating    tin.    When connecting sources to switching cards, install
information carefully before using the product.                   $~~tive     devices to lit   fault current and voltage to the
                                                                  card.
Exercise extreme caution when a shock hazard is present. Le-
thal voittige may be present on cable connector jacks or test     When fuses are used in a product, replace with same type and
f?xtures. The American National Standards Instih~te (ANSI)        rating for continued protection against fire hazard.
states that a shock hazard exists when voltage levels greater
than 30V RMS, 42.4V peak, or 60VDC are present. A good            Chassis connections must only be used as shield connections
safety practice is to expect that hazardous voltage is present    for measuring circuits, NOT as safety earth ground connec-
in any unknown circuit before measuring.                          tions.

Before operating an inskutient, make sure the line cord is        If you are using a test fxtwe, keep the lid closed while power
connected to a properly grounded power receptacle. Inspect        is applied to the device under test. Safe operation requires the
the connecting cables, test leads, and jumpers for possible       u.s$of a lid interlock.
wear, cracks, or breaks before each use.
                                                                  Ifa @saew    ispresenton~hetest tixhm?,connectit tbsafety
For maximum safety, do not touch the product, test cables, or     earth ground using #18 AWG or larger wire.
any other instruments while power is applied to the circuit
under test. ALWAYS remove power from the entire test sys-
                                                                  The $ symbol on an instrument or accessory indicates that
tern and discharge any capacitors before: connecting or dis-
                                                                  1oOOV more may be present on the terminals. Refer to the
                                                                        or
connecting cables or jumpers, installing or removing
                                                                  product manual for detailed operahlng information.
switching cards, or making internal changes, such as install-
ing or removing jumpers.
                                                                  Instrumentation and accessories should not be connected to
                                                                  humans.
Do not touch any object that could provide a current path to
the common side of the circuit under test or power lie
(earth) ground. Always make measurements with dry hands           Maintenance should be performed by qualified service per-
while standing on a ~JY, insulated surface capable of with-       sonnel. Before perfo&ng any maintenance, disconnect the
standing the voltage being measured.                              line cord~andall test cables.
                                                                SPECIFICATIONS

DC~ VOLTS
6% Digits,




ANALOG SETTLING          TIME:     lZOdB at dc, MHz or 6OHz (iO.O5%) with lkQ in either lead.                     ~3V-3ooV ranges; 15ppm of range for 3OOmV range; at 23OC il



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