GW Instek GCM-303 - Manual (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-
AUTO
,
MAX
, ,
+
7
8
9
10
11
,
AUTO
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:
Note:
on
A
A
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
V V
A
AC AC
CLAMP METER
AUTO RANGE
CLAMP METER
AUTO RANGE
OFF
V V
A
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