GMC-I Messtechnik GmbH
53
X
X
Z
L-PE
RCD is tripped too early, or is defective.
Remedy: Test with positive or negative half-wave.
X
X
I
N
/ I
F
RCD tripped during contact voltage measurement.
Remedy: Check selected nominal test current.
X
X
All except for U
Externally accessible fuse is defective.
The voltage ranges remain functional even if fuses have blown.
Special case, R
LO
:
Interference voltage during measurement may result in
destruction of the fuse.
Remedy: Replace fuse (replacement fuse in battery compartment).
Observe instructions for fuse replacement in section 19.3!
X
X
I
N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
Frequency out of permissible range.
Remedy: inspect mains connection.
all
Excessive temperature inside the test instrument.
Remedy: wait for test instrument to cool down.
X
X
R
ISO
/ R
LO
Interference voltage.
Remedy: device under test must be disconnected from all sources of volt-
age.
X
X
All measurements
with probe
Interference voltage at the probe
X
X
R
ISO
/ R
LO
Overvoltage, or overloading of the measurement voltage generator during
measurement of R
ISO
or R
LO
X
X
I
N
/ I
F
Z
L-N
/ Z
L-PE
Z
ST
, R
ST
, R
E
Meter start-up
No mains connection.
Remedy: inspect mains connection.
X
X
all
Hardware defect
Remedy:
1) Switch on/off
or
2) Briefly take out the batteries/rechargeable batteries
If error message remains, send test instrument to GMC-I Service GmbH
for repair.
X
X
R
LO
OFFSET measurement not advisable
Remedy: check system
OFFSET measurement of
R
LO+ and
R
LO– remains possible
X
R
LO
R
OFFSET
> 10
:
OFFSET measurement not advisable
Remedy: check system
X
Z
L-N
Z
OFFSET
> 10
:
OFFSET measurement not advisable
Remedy: check system
Status
Test
Plug
Meas.
Adapter
Selector Switch
Position
Function / Meaning
