TWO: OPERATION AND MEASUREMENT
2.1
Warning
Electricity can cause severe injuries or even d eath, sometimes
even with relatively low voltages or currents.
Therefore it is vitally important that any electronic instruments such
as these meters be totally understood before use.
Please do not use this instrume nt, or any other piece of electrical
or electronic test equipment, without first thoroughly familiarizing
yourself with its correct operation and use.
2.2
Cautions
(1)
To obtain accurate impedance values, perform zero
adjustment before measurements.
(2) Attempted measurement of charged capacitors will overload
the instrument.
(3) If a dead or partially discharged battery is left in the instrument
for an extended period, damage to the unit could result from
battery lea kage. Therefore it is important t o rep lace a
discharged battery prompt ly. Ple ase dispo se o f the u sed
battery in a proper manner. Additionally, if t he instrument will
not be u sed for an extend ed p eriod, a lways remove the
battery from the unit and store it separately.
(4) Do not use solvents or aromatic hydrocarbons to cle an the
instrument, or the plastic case may be damaged. If cleaning is
necessary, use only a mild solution of warm water and soap.
(5) Capacitors are manufactured to operate under certain
conditions. Since the meter may test a capacitor under
different conditions than of the manufacturer, the values
might not be identical. This is not due to meter error, just
the method of test. Therefore, if this is the case, check
the capacitor’s dissipation factor (
≦
0.1) and whether the
test was conducted in series or parallel mode (ref.
Section 3.6). Use the equations to convert between the
modes. At this point, one should obtain a value to that
3
Summary of Contents for 875B
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