Mastech MS2108A, Operation Manual

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3. SPECIFICATIONS
Calibration is required once a year, to be carried out at a
temperature between 18°C and 28 °C (64 ° F to 82 ° F) and relative
humidity below 75%.
3.1 GENERAL SPECIFICATIONS
3.1.1 Auto range.
3.1.2 Overrange protection is provided for all ranges.
3.1.3 Maximum voltage between terminals and earth ground:
1000V DC or 750V rms AC
3.1.4 Operating altitude: max. 2000 meters (7000 ft.)
3.1.5 Display: 4000 counts with analog bar LCD display
3.1.6 Maximum value display: 4000 digits
3.1.7 Polarity indication: automatic; ‘-‘ for negative polarity.
3.1.8 Overrange indication: ‘0L’ or ‘-0L’
3.1.9 Converter Rate: 3 times/sec; Bar graph: 30 times/sec.
3.1.10 Unit indication: function and unit.
3.1.11 Auto power off time: 15 minute.
3.1.12 Operating power : 1.5V×3 AAA batteries
3.1.13 Battery low indication: ‘ ’ on LCD
3.1.14 Temperature factor: < 0.1×Accuracy /
℃
3.1.15 Operating temperature: 0
℃
to 40
℃（
32 ° F to 104 ° F
）
3.1.16 Storage temperature: -10
℃
to 50
℃（
10 ° F to 122 ° F
）
3.1.17 Dimension: 208×78×35mm
3.1.18 Weight: approximate 340g
（
including batteries
）
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3.2 ELECTRICAL SPECIFICATIONS
Ambient temperature: 23 ± 5
℃
Relative humidity: < 75%
3.2.1 AC Current
Range Resolution Accuracy
40A 0.01A ±
（
2.0% of rdg + 6 digits
）
400A 0.1A
- Max. input current: 400A AC
- Frequency range: 40 to 400Hz
- Response: average value
3.2.2 DC Current
Range Resolution Accuracy
40A 0.01A ±
（
2.0% of rdg + 6 digits
）
400A 0.1A
- Max. input current: 400A DC
3.2.3 DC Voltage
Range Resolution Accuracy
400mV 0.1mV ± (1 .0% of rdg + 2digits)
4V 0.001V
40V 0.01V ± (0.7% of rdg + 2digits)
400V 0.1V
1000V 1V ±
（
0.8%rdg+2dgt
）
- Input impedance: 10M Ω
- Max. input voltage: 1000V DC
NOTE:
At small voltage range, unsteady readings will appear before the
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