User Manual

8 GMC-I Messtechnik GmbH
7.2 Voltage Measurements at Above 600 V
Voltages of greater than 600 V can be measured with a high-
voltage probe, e.g. the HV3
1)
or the HV30
2)
from GMC-I
Messtechnik GmbH. It is absolutely essential to ground the
bonding terminal. Observe all applicable safety precautions!
1)
HV3: 3 kV
2)
HV30: 30 kV, for DC voltages only
7.3 Sub-function Hz
➭ Briefly press the FUNC multifunction key to display the
frequency (max. 1_kHz) of the AC voltage.
➭ Press the FUNC key once again to quit the Hz function.
8 Current Measurement
➭ First disconnect supply power from the measuring circuit
or the consuming device, and discharge any included
capacitors.
➭ Select the A range with the rotary selector switch for
current greater than 600 mA, or the mA range for
current less than 600 mA. Activate the highest measuring
range first when measuring current of an unknown
magnitude.
➭ Select the current type appropriate for the measured
quantity by briefly pressing the FUNC key. Each time the
key is pressed, DC and AC are alternately selected, and
switching is acknowledged with an acoustic signal. The
selected current type is indicated at the LCD by means of
the DC and AC symbols.
DC current is always active immediately after range
selection with the rotary selector switch.
➭ Securely connect the measuring instrument to the
consuming device in series as shown (without transfer
resistor).
Voltage Measurements at Above 600 V
with the HV3 High-Voltage Probe
black
black
red
x1000
x100
FUNC
brief
DC  AC~
AC~
 DC
1x
A
...6 A
!
00.00
A
Current
~ ~
1
3
2
A: 6A  10.00 mA
Measuring Range:
MM
>11A:
!
0.000
A
DC
AC~
AC~
DC
acoustic signal
acoustic
signal
...10 A