GMC-I Gossen-Metrawatt GmbH
21
GB
9
Current Measurement
➭
First switch off the power supply to the measuring circuit
or the load component and discharge any capacitors
which might be present.
➭
Select range A
with the rotary switch for currents
> 300 mA, or range mA
for currents < 300 mA.
Switch to the measuring range A first
, for the measure-
ment of currents of an unknown quantity.
➭
Select the respective current type which corresponds to
the measured quantity by briefly pressing the multifunc-
tion key
ESC|FUNC
. Each activation of the key causes
alternate switching between DC and (DC + AC), as well
as acknowledgement by means of an acoustic signal.
The symbols DC and DC AC indicate the selected volt-
age type at the LCD display.
After the range has been selected with the rotary switch,
the DC current mode is always active. If the multifunction
key
ESC|FUNC
is activated, the instrument switches to
DC AC, which is acknowledged with an acoustic signal.
➭
Securely connect the instrument to the load component
in series as shown (without matching resistor).
A
mA
10A
300mA
– (+) / ~
+ (–) / ~
– (+) / ~
+ (–) / ~
. . . 300 mA
. . . 10 A
A
mA
10A
300mA
