Chapter II
Benchtop multimeter
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2. DESCRIPTION
2.1. Selector
switch
This measuring instrument is a benchtop professional, capable of measuring the following
quantities (accessed by the eight-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,
* sound continuity,
* capacitance,
* diode threshold voltage,
* frequencies,
* duty cycles,
* impulse counting,
* impulse breadth,
* dBm,
* resistive power.
2.2. Keypad
2.2.1. Keypad
A nine-key keypad lets you :
* select the autoranging mode (RANGE key)
* store a value (MEM key)
* measure fast peaks (Pk+/- key)
* set the measurement relative to a reference value (REL key)
* select a function derived from the main function (SEL key)
* select time-domain measurements: frequency, duty cycle, stopwatch, event counter
(Hz key)
* activate sending data to a printer (PRINT key)
* activate the MIN- MAX- AVG detection mode (SURV key)
* enlarge the analog display (ZOOM key)
2.2.2. Switching on and off
Switching on and off the instrument by pushing a double-press key.
2.3. Display
The display shows :
* clearly legible figures (20 mm high)
* an analogue readout of the parameter being measured through a 34-segment
bargraph
* perform 50 000-point measurements (high resolution)
* perform 5 000-point measurements (low resolution)
