Battery Test; General Specifications; Accuracy Indicators - Mastech MS8239A User Manual

3 Connect the black and red test probe to cathode
and anode of the diode to be tested, respectively.
The meter will display the diode's forward bias
voltage value. If the test probe polarity is reversed,
the meter will display "1", which distinguishes the
diode's cathode and anode.
Warning
When measuring diodes, to avoid injury or meter
damage, turn off the power to the circuit and
discharge all capacitors.

Battery test

1 Place the function measuring range switch to the
battery testing position.
2 Insert the red probe to VΩmA input jack. Insert the
black probe to COM input jack.
3 Connect free end of the red probe to positive and
the free end of the black probe to negative end of
the battery to be tested.
4
Read the result from the LCD display.
Warning
Don't input voltage higher than 60V DC or 30V AC,
to prevent electric shock or meter damage.

General specifications

• Operating environment and condition: 600V
CAT. III, pollution grade: II.
Elevation < 2000 m
11
• Environmental temperature and humidity: 0~40°C,
<80% RH (do not use meter when temperature <10°C).
• Storage temperature and humidity: -10~60°C and
<70% RH (remove the battery).
• Temperature coefficient: 0.1 Accuracy /°C(<18°C
or >28°C).
• The maximum allowable voltage between
measurement end and ground: 600V DC or 600V
AC RMS.
• Fuse protection: grade mA: fuse F200mA/500V
grade 10A: fuse F10A/500V
• Sampling rate: about 3 times/s.
• Display: 3.5" digital LCD display.
• Over-range indication: LCD will show "1".
• Low battery indication: When the battery voltage is
lower than the normal operating voltage, "
display on the LCD display.
• Input polarity indication: automatically display "-".
• Power supply: AAA 1.5V batteries.

Accuracy Indicators

Accuracy: ±(% of reading + digits) with one year of
warranty. Reference conditions: environmental
temperature is from 18°C~28°C, relative humidity is
not more than 80%.
"will
12