Meter Description - Extech Instruments MA640 User Manual

Description

Meter Description

1. Current clamp
2. Clamp opening trigger
3. Hx % Button
4. MODE Button
5. LCD Display
6. Common Input jack
7. NCV sensor
8. NCV LED indicator
9. HOLD/BACKLIGHT Button and FUNCTION switch
10. RANGE Button
11. MAX-MIN Button
12. RELATIVE Button
13. Battery compartment (rear)
14. Positive Input jack
Display icons Description
HOLD Data Hold
AUTO Autoranging
DC Direct Current
AC Alternating Current
MAX Max reading
MIN Min reading
Low battery
REL Relative
V Volts (Voltage)

Ohms (Resistance)
A Amperes (Current)
F Farad (Capacitance)
Hz Hertz (Frequency)
% Duty Ratio
o o
F and C Fahrenheit and Celsius units (Temperature)
n, m, , M, k
Unit of measure prefixes: nano, milli, micro, mega, and kilo
) Continuity test
 )
)
Diode test
4 MA640-en-GB_V2.4 5/15