Gw-instek GCM-303 User Manual download pdf (Page 4)

Transform between diode and continuity check.

Mark product brand and model number

SELECT key

Name plate

LCD Display

Show measurement

symbols, units and values

-6--5-

AU TO

MAX

AU TO

MAX

(2) MEASURING INSTRUCTIONS

n AC Current Measurement ( )

Measuring range: 200A~600A (2 ranges, auto-ranging)

1.Set the function switch knob on

2.Press down the clamp trigger to open the jaw, place one

conductor in the center of the jaw (as below drawing),

then read the value when it stabilizes.

Please put the conductor in the center of jaw in

order to avoid serious inaccuracy

3.The meter will choose the appropriate range to measure

automatically.

4.When measurement finished, set the function switch

knob OFF position to turn off the meter.

If the measurement is conducted in a place with dim

light, you may press MAX key to lock the value

measured and read it in other places with proper

illumination.

Note:

Symbols / Units Description

Lit when in DC mode measurement

Lit when in AC mode measurement

Negative polarity indicator

Lit when in continuity check

Auto-ranging indicator

Low battery indicator

Unit for current measurement

Unit for voltage measurement

Unit for resistance measurement

Maximum value lock indicator

Lit when in diode measurement

Measured value display

MAX

SELECT

OFF

AC AC

CLAMP METER

AUTO RANGE

CLAMP METER

AUTO RANGE

OFF

SELECT

MAX

COM Terminal

terminal

For connecting the negative input end (black test lead) for

DCV, ACV,

measurement

For connecting the positive input end (red test lead) for DCV,

ACV,

measurement

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Gw-instek GCM-303 User Manual Page 4

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