Mastech MS2030A User Manual page 5

1. Current Clamp
For measuring AC current.
2. Safety barrier
Helps to keep hands from touching conductors while
measuring current.
3. Rotary Switch
Used to select function and range.
4. Display
Max. display value: 1999
5. Input Jack
Connection for the live (red) test lead for voltage,
resistance, diodes and continuity.
6. COM Jack
Connection for the common (black) test lead.
7. Hold Button
Press the "HOLD" button and the display will keep the
reading on the screen. The"
display. Press the "HOLD" button again to return the
display to normal.
8. Clamp Trigger
Press the trigger to open the clamp jaw; release to
close.
9.Backlight
Hold the button to turn on the backlight.
The worklight will turn on as well when the rotary
switch is in one of the current positions. Hold down
the button again to turn off the backlight.
10. NCV Button
Hold the "NCV" button to activate the non-contact
voltage mode.
"symbol appears on the
05
3.2 Display
Symbol Description
Low Battery
Volts (Voltage)
V
Amps (Current)
A
kilohms (Resistance)
kΩ
Continuity
Diode
Display Hold
Polarity Indicator (Negative)
A
V
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