Before switching on
Before switching an element of the test set on check the following:
- Make sure that the instruments are not damaged in any way that might
affect the safety.
- Make sure that there is no condensation moisture present on the
surface of the instrument.
- Make sure that the voltage and frequency of the local AC power supply
match the nominal ranges of use for the test-set.
- Check that the temperature resides within the nominal range.
- Make sure that the protective ground connection is properly connected.
- Take care of the possible electrostatic build-up that exists on
a copper wired long distance telecommunication line.