Mastech MS8268 - Technical Specifications; General Specifications; Measurement Specifications; DC Voltage Measurement Specifications

5.Breakthecircuitpathtobetested.
Touchtheblackprobetothemorenegativesideofthe
break;touchtheredprobetothemorepositivesideof
thebreak.(Reversingtheleadswillgiveanegative
reading,butwillnotdamagetheMeter.)
6.Turnonpowertothecircuit;thenreadthedisplay.Be
suretonotethemeasurementunitsattherightsideof
thedisplay(µA,mAorA).Whenonlythefigure"OL"
displayed,itindicatesoverrangesituationandthe
higherrangehastobeselected.
7.Turnoffpowertothecircuitanddischargeallhigh
voltagecapacitors.RemovetheMeterandrestorethe
circuittonormaloperation.
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4
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4TECHNICAL
T ECHNICAL
TECHNICAL
TECHNICALSPECIFICATIONS
S PECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
4.1
4.1
4.1
4.1GENERAL
G ENERAL
GENERAL
GENERALSPECIFICATIONS
S PECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
ℕEnvironmentconditions:
1000V CAT. IIand600V CAT. III
Pollutiondegree:2
Altitude<2000m
Operatingtemperature:
0~40℃,32℉~122℉(<80%RH,<10℃non-condensing)
Storagetemperature:
-10~60℃,14℉~140℉(<70%RH,batteryremoved)
ℕ
TemperatureCoefficient:
0.1×(specifiedaccuracy)/℃(<18℃or>28℃)
ℕ
MAX.Voltagebetweenterminalsandearthground:
750VACrmsor1000VDC.
ℕ
FuseProtection:
µAandmA:Resettablefuse(400mA/250V);
23
10A:F10A/250V∅6.3×32mm.
ℕ
SampleRate:3times/secfordigitaldata.
ℕ
Display:
33/4digitsLCDdisplay.Automaticindicationoffunctions
andsymbols.
ℕ
Rangeselection:automaticandmanual.
ℕ
OverRangeindication:LCDwilldisplay"OL".
ℕ
Lowbatteryindication:
The" "isdisplayedwhenthebatteryisunderthe
properoperationrange.
ℕ
Polarityindication:"−"displayedautomatically.
ℕ
Powersource:DC4.5V
ℕ
Batterytype:1.5VAAA.
ℕ
Dimensions:195×92×55mm.
ℕWeight:400g.Approx.(batteryincluded).
4.2
4.2
4.2
4.2Measurement
M easurement
Measurement
Measurementspecifications
s pecifications
specifications
specifications
Accuracyisspecifiedforoneyearaftercalibration,at
operatingtemperaturesof18℃to28℃,withrelativehumidity
at0%to75%.
Accuracyspecificationstaketheformof:±(%ofReading+
NumberofLeastSignificantDigits)
4.2.1
4.2.1
4.2.1
4.2.1DC
D C
DC
DCVoltage
V oltage
Voltage
Voltage
RangeResolutionAccuracy
400mV0.1mV
±（0.7%ofrdg+2digits）
4V1mV
40V10mV
400V100mV
1000V1V±（0.8%ofrdg+2digits）
Inputimpedance:10MΩ
Max.inputvoltage:1000Vdcor750Vacrms.
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