Metrix MX 23 User Manual

Chapter II
Portable digital multimeters 21
2. DESCRIPTION
2.1. Selector switch
This multimeter is a standalone, hand-held professional measuring instrument,
capable of measuring the following quantities, accessed by the 12-position rotary
selector switch (10-position : MX 23) :
∗ AC voltage with AC (or TRMS) capacitive coupling (input impedance : 500kΩ)
∗ AC voltage with AC+DC (or TRMS) direct coupling
∗ DC voltage
∗ DC / AC+DC voltage, range 500 mV
∗ AC current with AC+DC (or TRMS) direct coupling (except MX 23)
∗ DC current (except MX 23)
∗ resistance value
∗ continuity (with beeper)
∗ capacitance
∗ diode threshold voltage
∗ frequency
2.2. Keypad
A four-key (two-key : MX 23) keypad lets you :
∗ select the autoranging mode (RANGE / AC+DC key)
∗ store a value (MEM key)
∗ activate the MIN-MAX-AVG detection mode (MIN/MAX key) (except MX 23)
∗ select a function derived from the main function, or switch on the multimeter
again after it has been shut down automatically (RANGE / AC+DC key)
∗ activate back lighting of the display unit ( key) (except MX 23)
2.3. Display
This multimeter display provides :
∗ 5 000-count measurements (50 000-count Hz-measurement) selection
∗ function indicator (V, A, AC+DC, F, Hz,
, Ω, , AUTO, MEM, MIN, MAX,
AVG) and multiplicator (n, µ, m, k, M),
∗ battery discharged indicator BAT : approximately 12 hours of operation,
∗ clearly legible figures (11 mm high),
∗ an analogue readout of the parameter being measured through a 34-segment
bargraph.
∗ The « » symbol displays when the multimeter is in standby mode (the
multimeter goes off after 30 minutes without any action on key).
∗ Display backlight when required in poor lighting conditions.
2.4. Power supply
This multimeter is powered by a standard 9 V battery (6LF22) which provides
approximately 250 hours of operation (on function V
DC).
2.5. Input terminals
Measurements are performed using two measuring leads supplied with the instrument
connected to input terminals 1, 2, 3 and 4 (3 and 4 : only MX24 and MX 24B) as
indicated in section 3.1.

Metrix MX 23 Specifications

General

Brand	Metrix
Model	MX 23
Category	Measuring Instruments
Language	English