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Models 7018-S and 7018-C
28-Channel3-Pole Multiplexer Cards
Instruction Manual
Contains Operating and Servicing Information
WARRANTY
Kcithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of I year
from date of shipment.
Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable
baitcries, diskettes, and documentation.
During the warranty period, we will, at our 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 Keithlcy headquarters in Cleveland, Ohio.
You will be given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated sewice
facility. Repairs will be made and the product returned, transportation prepaid. Repaired or replaced products arc warranted for
the balance of the original warranty period, or at least 90 days.
LlMlTATlON OF WARRANTY
This warranly 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 from normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTIIER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THI? REMEDIES I'RO-
VIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUHNTIAL DAMAGES ARISING OUT OF THE USE OF ITS
INSTRUMENTS AND SOFI-WARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE
OF THE POSSIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIM-
ITED TO: COSTS OF REMOVAL AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY
PERSON, OR DAMAGE TO PROPERTY.
Kcithley Instruments, Inc. * 28775Aurora Road - Cleveland, OH 44139 - 440-24X-0400- Fax: 440-248-6168 9http://www.kcithley.com
Models 7018-S and 7018-C
Instruction Manual
01993, Keithley Instruments, Inc.
All Rights Reserved
Cleveland, Ohio, U. 5. A.
First Printing, October 1993
Document Number: 7018-901-01 Rev. A
Manual Print History
The print history shown below lists the printing dates of all Revisions and Addenda created for this manual. The
Revision Level letter increases alphabetically as the manual undergoes subsequent updates. Addenda, which are
released between Revisions, contain important change information that the user should incorporate immediately
into the manual. Addenda are numbered sequentially. When a new Revision is created, all Addenda associated
with the previous Revision of the manual are incorporated into the new Revision of the manual. Each new Revi-
sion includes a revised copy of this print history page.
Revision A (Document Number 7018~901.01) October 19%
Safety Precautions
l`hc following safciy prccaulions should hc ohscrvcd heforc using
this producl and any associated instrumcnlation. Although some in-
~mmxmis and accessories would normally hc used with non-haz-
ardous voltages, thcrc are siluations whcrc hazardous conditions
may hc prcscnl.
This product is imended for USCby queiilicd pcrsonncl whn rcwg~
nix shock hazards and arc familiar with :hc safety prccaulions rc~
quired Lo avoid possihlc injury. Kcad tbc "peraiing informalion
carclully hefore using the pruducl.
The types "C product users arc:
Responsible body is lhc individual or group rcsponsihlc lor the USC
and mainlenancc or equipmcnl. r"r ensuring that the equipment is
operated within its specilicauons and "pcrating limits. and for cn~
swing lhal "pcratnrs arc adcquatcly waincd.
Operators us" the product for ils imendcd runclion. They must he
trained in clcctrical salety procedures and proper US" of lhc instru-
mcnt. They must hc protcctcd from electric shock and con&i wilb
hazardous live circuits.
Maintenance personnel perform routine proccdurcs on the producl
to keep it "pcrating, for example. setting the line vollagc or replac-
ing consumahic materials. Maintenance proccdurcs arcdcscrihcd in
the manual. The proccdurcs cxplicidy stat" if ~hc opcralor may pcr-
SourmIhem. Otherwise, they should bc pcrrormcd only by service
personnel.
Service personnel arc lraincd 1" work on live circuits. and pcrlurm
safe installations and repairs or products. Only properly trained scr-
vice personnel may perform installation and service proccdurcs.
lixcrcise extreme caution when a shock hazard is prcscnt. Lcihal
vol~agc may be present on cable connector jacks or test Axturcs. The
American National Slandards lnstitule (ANSI) BIZBESthdl B shock
hazard exists when voltage levels grcatcr than 30V RMS. 42.4V
peak. or 60VDC arc prcsen~. A goud safety practice is to fx-
pect that hazardous vnltage is present in any un-
known circuit before measuring.
The insmmcnt and accessories mu bc used in accordance with its The WARNING hcading in a manual explains dangcrs that might
spccilicalions and operating inslrucLinns OTthe safely of Ihc cquip- rcsul~ in persrmal injury or death. Always read the asocialed i&r-
mcnt may be impeircd. maCon very carefully bclore performing ~hc indicated procedure.
Do ml exceed the maximum signal lcvcls ofthc inswmcnls and ac- The CAUTION hcading in a manual cxplains haxds Lhat could
ccssorics, as defined in the specificaliuns and operating informa- damage the inslrumcnl. Such damage may invatidaw the wananty.
tion, and as shown on Ihc insliumcnt OT test fixlurc panels, or
switching card. Inavumenlalian and acccssorics shall nol hc connected 10 humans.
When fuses BTCused in B produa, replace with same type and Ming Bcrorc pcribrming any maimcnancc, discoonccl the lint cord and
I'm continued prolcclion againsl fire harard. all test cahlcs.
To maintnin protcclion from elcc~ric shock and fire, rcplaccmcm
Chassis conncclions must only be used as shield ConnecLions for
components in mains circuils, including lhc power Iransrormcr, test
measuring circuits, NOT as safely carlh ground conneclions.
leads, and input jacks, musL bc purchased from Kcithlcy Instru-
mcnts. Slandard rusts, wilh applicable national sarcly approvals,
II you arc using a test fixurc, keep the lid closed while power is ap-
may be used if the rating and type ari: Lhc same. Other components
plied IO the device under test. Sale operalion rcquircs the use of a
that are not safety related may hc purchased from oLhcr suppliers as
lid intcriock.
long as Lhcy arc cquivalenl LOIhc original componcnl. (Note thal set
lcclcd patts should bcpurchased only through Kcithlcy lnstrumenls
Ira 0.. ww is present mnm it LOsareely earth ground using the
LOmaintain accuracy and functiunalily of the producl.) If you arc
wire recommended in lhc user documentalion.
unsure about the applicabilily (11 a rcptaccmem componcm, call a
Kcithlcy Insmunents dficc for infonna~ion.
Then symbol on an instrument indicates Hal the USCTshould TC-
rccr to the operating inslruclions located in lhc manual.
To clean an insvumenl. USC B damp clolh or mild, water based
cleaner. Clean the exlerior of the instwmcnl only. Do not apply
Then. ~ymhol on an instrumcnl shows Lhal il can swrcc OTmca-
ctcancr dircclly Lu Lhc instrument or aliow liquids LO enLcr or spilt
suc 1000 volls or more, including Lhc combined elfal of normal
on the instrumenl. Products that consisL of a circuit board wilh no
and common mode voltages. Use standard safculy precautions 10
case or chassis (c.g., dala acquisition board for installation into a
avoid pcrsonai contact with these vol~agcs.
computer) should ncvcr rcquirc cleaning if handled according LOin-
sLruclions. I( Ihc board bccomcs cantaminaled and apcratian is a[-
f&cd, the board should be retuned Lo lhc factory for proper
clcaninglservicing.
MODEL 7018-C, 7018-S
2%CHANNEL 3-POLE MULTIPLEXER
MULTIPLEX CONFIG"RATION: TWO indepcndcnt 1x14 3.pole
multiplex banks or 0