PF9800SeriesUser'sManual
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Note:
Whenthemeasuredpoweriszero,theinstrumentwillnotjudgethelimitof
power.Whenthemeasuredcurrentiszero,theinstrumentwillnotjudgethe
limitofcurrent.
Ifyoudon
’
twanttojudgethelimitofpower,youcansettheuppervalueof
poweras9999kWandthelowervalueofpoweras0.000W.Ifyoudon
’
t
wanttojudgethelimitofcurrent,youcansettheuppervalueofcurrentas
9999Aandthelowervalueofcurrentas0.000A.
Beinglimitedtodisplaydigit,whentheactivepowerisnegative,theminus
isnotdisplayed(negativepolaritycanbejudgeddependingonthepower
factor).Thevalueofpowermustbeoverthepresetlimitbecauseitis
positivepolarity,andwillresultinalarm.Youcanturnoffthesignalinput
and changethepositionoftheconnectingwiresofthetwoterminalsin
rearpanel(VoltageandCurrentcannotbechangedatthesametime),which
makesthemeasuredvalueofpowerbepositive.
5.5Functionofkeylock
Lockthedisplayvalue,the “LOCK”keylightisturnon,PresstheLOCKkeyagainto
releasethelockstate.
5.6FunctionofMute(PF9804)
Ifyoudon’tneedthesoundalarm,youcanpressMUTEkeytodisablethebelltoring.
InMUTEstatetheMUTEindicatorwilllightup.PresstheMUTEkeyagaintoexit
fromMUTEstate.
5.7CommunicationSetting(PF9810/PF9811)
IntheNormalmodemeasurement,Pressthe “COMMODE”keytothecommunication
modesetting,youcanselectcommunication “SPEC”or “NORM” by “
∧
”keyand
“∨”key.
SPEC:Multi-machinecommunicationmode.Whenusingthismode,theinstrument
addresscanbeselectedandsaved,thesettingrangeofaddress:0~31.
NORM:Normalcommunicationmode,inthismode,youcannotusemulti-machine
communication.
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