Operation - METREL MD 9040 Manuel D'utilisation

MD 9040 & MD 9050 Digital multimeter

4 Operation

CAUTION
Before and after hazardous voltage measurements, test the voltage function on a
known source such as line voltage to determine proper meter functioning.
TM
AutoCheck (for MD9050 only)
This innovative AutoCheck
DCV, ACV or Resistance () based on the input via the test leads.
 With no input, the meter displays "Auto" when it is ready.
 With no voltage signal but a resistance below 60M is present, the meter displays
the resistance value. When below "Audible Threshold" is present, the meter further
gives a continuity beep tone.
 When a signal above the threshold of 1.5V DC or 3V AC up to the rated 1000V is
present, the meter displays the voltage value in appropriate DC or AC, whichever
larger in peak magnitude.
Note:
*Range-Lock and Function-Lock Feature: When a measurement reading is being
displayed in AutoCheck
time can lock the range or function it was in. Press the button momentarily repeatedly to
step through the ranges or functions.
*As Hazardous-Alert: When making resistance measurements in AutoCheck
an unexpected display of voltage readings alerts you that the object under test is being
energized.
TM
feature automatically selects measurement function of
TM
mode, press the RANGE or SELECT button momentarily 1
8
Operation
TM
mode,