Continuity Sound Test; Diode Test; Battery Test; Current Measurement (With Clamp, Optional) - Metrix MX 21 Manual De Instrucciones

3.3 Continuity sound test

• Connect the leads to the multimeter (COM and Ω terminals) and to the
circuit or the component to be tested.
• Position the selector switch on the continuity sound function :
• The audible beep stops when R > 750 Ω.
• Protection : < 600 Vrms.
• Output voltage on open circuit : < 2 V

3.4 Diode test

Never test a diode on a live circuit.
With this function, it is not only possible to test classic diodes, but also
LED's or any other semiconductor in which the junction corresponds to a
direct voltage less than 3 V.
• Connect the leads to the multimeter (COM and
the circuit or component to be tested.
• Position the selector switch on the «
# in forward bias, the display gives the value of the junction in V
(resolution 1 mV)
- accuracy : ± 2 % R ± 15 mV
- voltage on open circuit : 7 V typical
- short circuit current : 0.4 mA
# in reverse bias, the display indicates the open circuit voltage (> 2 V).
• Memorise, if necessary, by pressing the « MEM » key.
• For measurements > 2 V, press the « RANGE » key.
• Protection : < 600 Vrms.

Battery test

3.5
• Position the selector switch on function «
• Remove the leads from the input terminals.
• Press the « RANGE » key. If the display indicates « < 4 V », only few
hours battery life remain until « BAT » (battery discharge indicator) is
displayed.
"
The displayed value corresponds to the battery voltage -2 V.

3.6 Current measurement (with clamp, optional)

• Connect the leads of the clamp to the terminals of the multimeter
• [V (clamp) and COM].
• Position the selector switch on function clamp «
• Input impedance > 10 MΩ
• Overload : the beep sounds and « 1 » blinks.
•
Memorise, if necessary, by pressing the « MEM » key.
Range
Resolution
Accuracy
Protection
Multimeter
0 to 200 A
0.1 A / 10 mV
± 1 % R ± 4 digits
terminals) and to
» function :
» diode.
Clamp
0.5 to 200 A
Ratio I/O : 100 mV
typical 2 %
600 Vrms
».
AC
/ 1 A
DC AC