HT instruments HT39 - Manual (Page 4)

HT37 - HT39
EN - 3
• Make sure that batteries are properly installed.
• Before connecting the test probes to the installation, make sure that the function
selector is positioned on the required measurement.
• Make sure that LCD and function selector indicate the same function.
1.2. DURING USE
Read the recommendations which follow and the instructions in this manual:
CAUTION
An improper use may damage the instrument and/or its components or
injure the operator.
• When changing the range, first disconnect the test leads from the circuit under test in
order to avoid any accident.
• When the instrument is connected to measuring circuits never touch any unused
terminal.
• When measuring resistors do not add any voltage. Although there is a protection circuit,
excessive voltage could cause malfunctioning.
• If during measurement the displayed values remain constant check whether the HOLD
function is active.
1.3. AFTER USE
• After using the instrument turn it off.
• If you expect not to use the instrument for a long period remove the battery to avoid
leakages of battery liquids which may damage its inner components.