MD 9010 General Purpose Auto – Check Digital Multimeter Operation
6
4 Operation
Note: All function operations described hereafter are via the Red test lead for positive
(+) polarity and Black test lead for Ground reference (-), or otherwise specified
WARNING: Before and after hazardous voltage measurements, test the voltage
function on a known source such as line voltage to determine proper meter functioning.
Functiones in„Auto V “ position
Quick Start (MD 9010)
AutoCheckTM mode is the default function in “Auto V.” position. Press the SELECT
button momentarily to select and step through the functions:
AutoCheckTM→Continuity→EF→ACV→DCV→
→Hz→Cx→AutoCheckTM
AutoCheckTM mode (MD 9010)
This innovative AutoCheckTM feature automatically selects measurement function of
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 6Mis present; the meter displays
the resistance value. When below 25is present, the meter further gives a
continuity beep tone.
When a signal above the threshold of DC 1.2V or AC 1.5V up to the rated 600V
is present, the meter displays the appropriate voltage value in DC or AC,
whichever larger in peak magnitude.
Overload-Alert Feature: When above rated 600V is present, the meter displays
“OL” with a warning beep tone. Disconnect the test leads from the signal
immediately to avoid hazards.
Note:
*Range-Lock Feature: When a measurement reading is being displayed in
AutoCheckTM mode, press the SELECT button momentarily 1 time can lock the
function-range it was in. The LCD annunciator “ ” turns off. Range-lock can
speed up repetitive measurements. Press the SELECT button momentarily again to
return to AutoCheckTM mode.
*Hazardous-Alert: When making resistance measurements in AutoCheckTM mode, an
unexpected display of voltage readings alerts you that the part under test is still
energized.
*AutoCheckTM nominal input impedances are slightly lower than that of common digital
multimeters. They are, in fact, more similar to that of most traditional analog
multimeters. “LoZ” will display on the LCD to remind the users in such cases. Although
not likely, if such impedance might damage your circuits, use the common impedance
Hi-Z) voltage mode for making voltage measurements on them.(
Continuity, Audible with Symbolic Display
From AutoCheckTM with “Auto” being displayed, press the SELECT button momentarily
1 time to select Continuity function. The meter displays a symbolic open-switch display
“” when it is ready. Continuity is convenient for checking wiring connections and
operation of switches. A continuous beep tone with a symbolic closed-switch display
