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Extech Instruments Extech 470 - Controls and Jacks Overview; Meter Component Identification; Symbol and Annunciator Glossary

Extech Instruments Extech 470
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V5.0 5/04 4
Controls and Jacks
1. IR Thermometer and laser pointer
2. 4000 count LCD display
3. HOLD and Backlight button
4. SELECT button
5. Function switch
6. mA, uA and A input jacks
7. COM input jack
8. Positive input jack
9. RANGE hold button
10. RELATIVE button
11. Laser pointer button
12. Protective holster
Note: Tilt stand and battery compartment are on rear of unit.
Symbols and Annunciators
•))) Continuity
Diode test
Laser pointer
Battery status
Test lead connection
error
n nano (10
-9
) (capacitance)
µ micro (10
-6
) (amps, cap)
m milli (10
-3
) (volts, amps) A Amps
k kilo (10
3
) (ohms) F Farads (capacitance)
M mega (10
6
) (ohms) Ohms
Hz Hertz (frequency) V Volts
% Percent (duty ratio) REL Relative
AC Alternating current AUTO Autoranging
DC Direct current HOLD Display hold
ºF Degrees Fahrenheit ºC Degrees Centigrade

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