Description; Display; Keypad; Selector Switch - Metrix MX 21 Manual De Instrucciones

2. DESCRIPTION

This compact multimeter is a self-contained unit with an appropriate
mechanical construction, enables hand-held use.
It is designed for a high degree of safety use and comes with a
maximum protection and unrivalled performance.

2.1 Display

• Liquid crystal display 3 ½ digits (height of digits : 18 mm)
• Function indicator : V, A, AC (default, otherwise DC),
measurement with clamp
• « BAT» :
battery discharge indicator
• « 1 »,
on the left hand side, blinks and a beep sounds except
in Ω function : overrange.
• « MEM» : fixes the display on the current value.
• « AC » :
the voltage measured by the instrument is an average
value.
• « RANGE » : manual mode in V
2.2

Keypad

« RANGE » key :
• Selection of the automatic (default) or manual mode: short press
< 1 sec. on the key, the beep sounds briefly.
• Switch from manual to autoranging mode : long press > 1 sec., no
audible signal.
• In manual mode, range selection : press successively > 1 sec. on
the key.
• This key is operative in V
• Battery test in function
« MEM » key :
• Fixes the display on the current value and memorises it (short
press).
• A second short press returns the multimeter to normal mode.

2.3 Selector switch

A ten-position rotary selector switch gives access to the following
quantities :
• AC voltage
• DC voltage
• Continuity (with beep)
• Resistance
• Diode
• Measurement with clamp (optional), widening the field of
applications of the multimeter
• OFF : Off position (2 positions)
2.4 Terminals (∅ ∅ ∅ ∅ 4 mm)
• V, Ω,
,
• COM :
, V
AC
: terminal receiving the red lead
terminal receiving the black lead
, Ω ranges.
, V
DC AC
, Ω ranges.
DC
, Ω,
(optional)
,