User Manual

40 GMC-I Messtechnik GmbH

V/Hz, Ω, Temperature, and A/Hz Measurements

5.8.2 Alternating Current and Frequency Measurement,

Direct Connection, mA AC and Hz

Ð First disconnect supply power from the measuring circuit or

the power consumer (1), and discharge any capacitors.

Ð In accordance with the current or frequency to be measured,

turn the rotary switch to A~ or Hz.

Ð Select the desired measured quantity by briefly pressing the

OUT | ENTER multifunction key. Each time the key is pressed,

TRMS

and Hz are alternately selected, and switching is

acknowledged with an acoustic signal.

Ð Safely connect the measuring instrument (without contact

resistance) in series to the power consumer as shown.

Ð Switch supply power to the measuring circuit back on (3).

Ð Read the display. Make a note of the measured value if the

instrument is not being operated in the memory mode or the

transmission mode.

Ð Disconnect supply power from the measuring circuit or the

power consumer (1) once again, and discharge any

capacitors.

Ð Remove the test probes from the measuring point and return

the measuring circuit to its normal condition.

mA~

003.50

TRMS

050.10

Current measurement only

with batteries installed!

Current

300 μA / 3 mA

30 mA / 300 mA

Measuring ranges:

ZERO/SEL

ESC

I > 310 mA

MR 300 mA

–+ +

...