User manual

GMC-I Messtechnik GmbH 39
V/Hz, , Temperature, and A/Hz Measurements
5.8.2 Alternating Current and Frequency Measurement,
Direct Connection, mA AC and Hz
➭ First disconnect supply power from the measuring circuit or
the power consumer (1), and discharge any capacitors.
➭ In accordance with the current or frequency to be measured,
turn the rotary switch to A~ or Hz.
➭ Select the desired measured quantity by briefly pressing the
OUT | ENTER multifunction key. Each time the key is pressed,
AC
TRMS
and Hz are alternately selected, and switching is
acknowledged with an acoustic signal.
➭ Safely connect the measuring instrument (without contact
resistance) in series to the power consumer as shown.
➭ Switch supply power to the measuring circuit back on (3).
➭ 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.
➭ Disconnect supply power from the measuring circuit or the
power consumer (1) once again, and discharge any
capacitors.
➭ Remove the test probes from the measuring point and return
the measuring circuit to its normal condition.
~
R
x
~
R
x
1
3
2
mA~
mA~
Hz
003.50
A
AC
TRMS
050.10
Hz
AC
8 . 8 . 8 . 8 . 8
!
Current measurement only
with batteries installed!
Current
0.3 mA / 3 mA
30 mA / 300 mA
Measuring ranges:
ZERO/SEL
ESC
I > 310 mA
!
MR 300 mA
–+ +
...