2
11 Do not operate the function selector while the instrument is connected to a circuit. If, for
example, the instrument has just completed a continuity test and an insulation test is to
follow, disconnect the test leads from the circuit before moving the selector switch.
12 Do not rotate rotary switch when test button is depressed. If the function switch is
inadvertently moved to a new function when the test button is depressed or in lock-down
position the test in progress will be halted.
13 Always check the test lead resistance before carrying out tests. This ensures the leads
are ok before taking measurements. The resistance of leads and/or crocodile clips may
be significant when measuring low resistances. If crocodile clips can be avoided for low
resistance measurements, this will reduce the error due to lead accessories
14 When carrying out Insulation Resistance tests, always release the test button and wait for
charged capacitances to totally discharge before removing the test leads from the test
circuit.
