Chapter II
20
Portable digital multimeter
2.
DESCRIPTION
This multimeter is one of the ASYC II (Advanced SafetY Concept, third generation) range,
designed for a high degree of user safety, maximum protection and unrivalled performance.
2.1. Selector
switch
It is a standalone, handheld professional measuring instrument, capable of measuring the
following quantities (accessed by the eleven-position rotary selector switch) :
•
AC voltages with AC (or RMS) capacitive coupling,
•
AC voltages with AC+DC (or TRMS) direct coupling,
•
DC voltages,
•
AC currents with AC (or RMS) capacitive coupling
•
AC currents with AC+DC (or TRMS) direct coupling,
•
DC currents,
•
resistance values,
•
continuity (with beeper),
•
capacitance,
•
diode threshold voltage,
•
frequencies,
•
duty cycles
2.2. Keypad
A six-key keypad lets you :
•
select the autoranging mode (RANGE key),
•
freeze a value (HOLD key),
•
measure fast peaks (Pk +/- key),
•
set the measurement relative to a reference value (REL key),
•
select a function derived from the main function, or switch on the
multimeter again after it has been shut down automatically (SEL/ON key),
•
activate sending data to a printer (PRINT key).
2.3. Display
The display provides :
•
clearly legible figures (14 mm high),
•
an analogue readout of the parameter being measured through
a 34-segment bargraph,
•
perform 5000-count measurements
2.4. Power
supply
This multimeter is powered by a standard 9 V battery which provides approximately 500 hours of
operation.
2.5. Input
terminals
Measurements are performed using two measuring leads supplied with the instrument
connected to input terminals 1, 2, 3 and 4, as indicated in section 3.1.
