Meter Description; Display Description - Extech Instruments MA440 User Manual

Description
Meter Description
1. Transformer current jaws
2. Jaw opening trigger
3. M (Mode) button
4. Backlit LCD
5. Control buttons (see descriptions below)
6. COM negative input terminal
7. Positive input terminal
8. Function selector
9. NCV alert symbol
10. Backlight button (MA440) or Work Light button
(MA443 and MA445)
11. NCV sensor
Note: Battery compartment is located on back of meter
Display Description
Relative mode icon
Alternating/Direct Current
Negative readings
Diode mode
Continuity mode
Display Hold
Units of resistance
Auto Power OFF icon
Danger: High Voltage
Fig. 1 – Meter Description
5
1
2
3
4
5
Units of Frequency
Units of Voltage
Units of Capacitance
Non‐contact AC Voltage Detect
Automatic range mode
Maximum/Minimum readings
Low Battery icon
Duty Cycle
Measurement overload
MA44x‐en‐GB_V1.0 8/16
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10
9
8
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