Technical Specifications; General Specifications; Measurement Specifications; Dc Voltage - Mastech MS8265 Operator's Instruction Manual

measurement units at the right side of the display
(mA or A). When only the figure "1" displayed, it
indicates overrange situation and the higher range
has to be selected.
6. Turn off the power of the measured circuit and
discharge all the high voltage capacitors. Remove
the test leads and recover the measured circuit.

4. Technical Specifications

4.1 General Specifications

• Environment conditions:
1000V CAT. II and 600V CAT.III
Pollution degree: 2
Altitude < 2000m
Operating temperature:
0~40°C, 32°F~122°F(<80% RH, <10°C noncondensing)
Storage temperature:
-10~60 °C, 14°F~140°F(<70% RH, battery removed)
• Temperature Coefficient:
0.1(specified accuracy) /°C(<18°C or >28°C)
• MAX. Voltage between terminals and earth ground:
750V AC rms or 1000V DC.
• Fuse Protection: mA: Resettable fuse (F200mA/250V)
• Sample Rate: 3 times/sec for digital data.
• Display: 4 1/2 digits LCD display. Automatic indication
of functions and symbols.
• Over Range indication: LCD will display "1".
• Low battery indication:
The " " is displayed when the battery is under the
proper operation range.
• Polarity indication: " " displayed automatically.
• Power source: 9V
• Battery type: NEDA 1604, 6F22, or 006P.
• Dimensions: 195(L)92(W)55(H) mm.
• Weight: 380g. Approx. (battery included).
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4.2 Measurement specifications

Accuracy is specified for one year after calibration, at
operating temperatures of 18°C to 28 C, with relative
humidity at 0% to 75%.
Accuracy specifications take the form of:
±(% of Reading + Number of Least Significant Digits)

4.2.1 DC Voltage

Range
Resolution
200mV 0.01mV
2V 0.1mV
20V 1mV
200V 10mV
1000V 0.1V
Input impedance: 10MΩ
Max. input voltage: 250Vdc or ac rms for 200mV range
and 1000Vdc or 750V ac rms for other ranges,

4.2.2AC Voltage

Range
Resolution
2V 0.1mV
20V 1mV
200V 10mV
750V 0.1V
Range
Resolution
2V 0.1mV
20V 1mV
200V 10mV
750V 0.1V
°
Accuracy
±(0.05% of rdg +5 digit)
±(0.1% of rdg +5 digit)
±(0.15% of rdg +5 digits)
Accuracy(50~60Hz)
±(0.5% of rdg +15 digits)
±(0.8% of rdg +15 digits)
±(1.0% of rdg +15 digits)
Accuracy(40~400Hz)
±(1.0% of rdg +15 digits)
±(1.0% of rdg +50 digits)
±(1.2% of rdg +50 digits)
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