Instruction manual

To testthehFEoftransistor:
1.SettherotaryswitchtohFE
h FE
hFE
hFErange.
2.Connectthe“com”plugand“+”plugofthespecial
multi-functionsockettotheCOM
C OM
COM
COMandhFE
h FE
hFE
hFEterminals.
3.DeterminewhetherthetransistortobetestedisNPNor
PNPtypeandlocatetheEmitter,BaseandCollector
leads.
4.Insertleadsofthetransistorintoproperholesofthe
specialmulti-functionsocket.
5.Themeterwillshowtheapprox.hFEvalueattest
conditionofbasecurrent10μAandVce2.8V.
3.2.
3.2.
3.2.
3.2.6
6
6
6Capacitance
C apacitance
Capacitance
Capacitancemeasurement
m easurement
measurement
measurement
To
To
To
Toavoid
avoid
avoid
avoidelectrical
electrical
electrical
electricalshock
shock
shock
shockand/or
and/or
and/or
and/ordamage
damage
damage
damageto
to
to
tothe
the
the
the
instrument,
instrument,
instrument,
instrument,disconnect
disconnect
disconnect
disconnectcircuit
circuit
circuit
circuitpower
power
power
powerand
and
and
and
discharge
discharge
discharge
dischargeall
all
all
allhigh-voltage
high-voltage
high-voltage
high-voltagecapacitors
capacitors
capacitors
capacitorsbefore
before
before
before
measuring
measuring
measuring
measuringcapacitance.
capacitance.
capacitance.
capacitance.Use
Use
Use
Usethe
the
the
thedc
dc
dc
dcvoltage
voltage
voltage
voltage
function
function
function
functionto
to
to
toconfirm
confirm
confirm
confirmthat
that
that
thatthe
the
the
thecapacitor
capacitor
capacitor
capacitoris
is
is
is
discharged.
discharged.
discharged.
discharged.
Capacitanceistheabilityofacomponenttostorean
electricalcharge.
Theunitofcapacitanceisthefarad(F).Mostcapacitorsare
inthenanofaradtomicrofaradrange.TheMetermeasures
capacitancebychargingthecapacitorwithaknowncurrent
foraknownperiodoftime,measuringtheresultingvoltage,
thencalculatingthecapacitance.Themeasurementtakes
about1secondperrange.
TheMeter'scapacitancerangesare4.000nF40.00nF,
400.0nF,4.000µ F, 40.00µFand200.0µ F.
19
To measurecapacitance:
1.Settherotaryswitchto range.
2.ConnecttheblackandredtestleadstotheCOM
C OM
COM
COMand
terminalsrespectively.(oryoucanmeasurethe
capacitancebyusingthespecialMulti-FunctionSocket)
3.Connectthetestleadstothecapacitorbeingmeasured
andreadthedisplayedvalue.
Some
Some
Some
Sometips
t ips
tips
tipsfor
f or
for
formeasuring
m easuring
measuring
measuringcapacitance:
c apacitance:
capacitance:
capacitance:
ℕ
Themetermaytakeafewseconds(200µFrange,30
seconds)tostabilizereading.Thisisnormalforhigh
capacitancemeasuring.
ℕ
To improvetheaccuracyofmeasurementslessthan4nF,
subtracttheresidualcapacitanceoftheMeterandleads.
3.2.
3.2.
3.2.
3.2.7
7
7
7Frequency
F requency
Frequency
Frequencyand
a nd
and
andDuty
D uty
Duty
DutyCycle
C ycle
Cycle
Cyclemeasurement
m easurement
measurement
measurement
Do
Do
Do
Donot
not
not
notmeasure
measure
measure
measureFrequency
Frequency
Frequency
Frequencyon
on
on
onhigh
high
high
highvoltage
voltage
voltage
voltage
(>
(>
(>
(>250
250
250
250Vdc
Vdc
Vdc
Vdcor
or
or
or250
250
250
250Vac
Vac
Vac
Vacrms)
rms)
rms)
rms)to
to
to
toavoid
avoid
avoid
avoidelectrical
electrical
electrical
electricalshock
shock
shock
shock
hazard
hazard
hazard
hazardand/or
and/or
and/or
and/ordamage
damage
damage
damageto
to
to
tothe
the
the
theinstrument.
instrument.
instrument.
instrument.
To measurefrequencyorDutyCycle:
A
A
A
A）To
T o
To
Tomeasure
m easure
measure
measurefrequency
f requency
frequency
frequencyby
b y
by
byHz
H z
Hz
Hzrange
r ange
range
range
ℕSettherotaryswitchtoHzrange.
ℕConnecttheblackandredtestleadstotheCOM
C OM
COM
COMand
Hz
Hz
Hz
Hzterminalsrespectively.
ℕConnectthetestleadsacrossthesourceorload
undermeasurement,andreadthedisplayedvalue.
ℕ To makeadutycyclemeasurement,presstheHz
H z
Hz
Hz%
%
%
%
keyagain.
ℕReadthepercentofdutycycleonthedisplay.
20