User Manual

6 GMC-I Messtechnik GmbH
1 Safety Features and Safety Precautions
You have selected an instrument which provides you with a
high level of safety.
The digital multimeter is manufactured in compliance with
safety regulations. In case of incorrect use or careless han-
dling, the safety of both user and multimeter is not assured.
To maintain the safe and proper condition of the multimeters and to
ensure their safe operation, it is absolutely necessary to carefully and
completely read these operating instructions before using any multi-
meter. These instructions must be followed in all respects.
Please observe the following safety precautions
• The multimeter must only be operated by persons who
understand the danger of shock hazards and know how to
apply safety precautions. Shock hazards exist anywhere,
where voltages of more than 30 V (TRMS) may occur.
• Do not work alone in shock hazardous environment while
carrying out measurement
• The maximum allowable voltage between any terminal
sockets (1) and earth is equal to 600 V. Voltages of greater
than 500 V may only be applied to sockets „ “ and „V“
with the selector switch in the voltage measurement posi-
tion (selector switch in „V“ position).
• Take into account that unexpected voltages can occur at
devices under test (e.g. defective devices), for example,
capacitors can be dangerously charged.
• Verify that the test leads are in good condition, e.g. no
cracked insulation, no open circuits in the leads or connec-
tors.
• This multimeter must not be used for measurements on
circuits with corona discharge (high voltage).
• Be particularly careful when measurements are performed in
HF electrical circuits. Dangerous composite voltages may be
present.