Model8642A/B SafetyConsiderations
SAFETYCONSIDERATIONS
GENERAL
Thisproductandrelateddocumentationmustbere-
viewedforfamiliarizationwithsafetymarkingsand
instructionsbeforeoperation.
Thisproductisa SafetyClassI instrument(provided
witha protectiveearthterminal).
BEFOREAPPLYINGPOWER
Verifythattheproductissettomatchtheavailable
linevoltageandthecorrectfuseisinstalled.
SAFETYEARTHGROUND
Anuninterruptiblesafetyearthgroundmustbepro-
videdfromthemainpowersourcetotheproductinput
wiringterminals,powercord,orsuppliedpowercord
set.
SAFETYSYMBOLS
A
Instructionmanualsymbol:theproductwill
bemarkedwiththissymbolwhenit
isnecessaryfortheusertorefertotheinstruction
manual(refertoTableofContents).
L.
Indicateshazardousvoltages.
—Indicatesearth(ground)terminal.
WARNING
WARNING ] TheWARNINGsigndenotesa
hazard.Itcallsattentiontoa
procedure,practice,orthelike,which,ifnotcorrectly
performedoradheredto,couldresultinpersonalinju-
ry.Donotproceedbeyonda WARNINGsignuntilthe
indicatedconditionsarefullyunderstoodandmet.
CAUTION TheCAUTIONsigndenotesa haz-
ard.Itcallsattentiontoan
operatingprocedure,practice,orthelike,which,ifnot
correctlyperformedoradheredto,couldresultindam-
agetoordestructionofpartoralloftheproduct.Do
notproceedbeyonda CAUTIONsignuntiltheindi-
catedconditionsarefullyunderstoodandmet.
Any interruption of the protective (ground-
ing) conductor (inside or outside the instru-
ment) or disconnecting the protective earth
terminal will cause a potential shock hazard
that could result in personal injury. (Ground-
ing one conductor of a two conductor outlet
is not sufficient protection).
Whenever it is likely that the protection has
been impaired, the instrument must be made
inoperative and be secured against any unin-
tended operation.
If this instrument is to be energized via an
autotransformer (for voltage reduction) make
sure the common terminal is connected to the
earth terminal of the power source.
Servicing instructions are for use by service-
trained personnel only. To avoid dangerous
electric shock, do not perform any servicing
unless qualified to do so.
Adjustments described in the manual are per-
formed with power supplied to the instrument
while protective covers are removed. Energy
available at many points may, if contacted, re-
sult in personal injury.
Capacitors inside the instrument may still be
charged even if the instrument has been dis-
connected from its source of supply.
For continued protection against fire
hazard,
replace the line fuse(s) only with 250V fuse(s)
of the same current rating and type (for exam-
ple, normal blow, time delay,
etc.).
Do not use
repaired fuses or short circuited
fuseholders.
