5
AutoTect
T
Mode
The AutoTect
feature automatically selects measurement function of
V dc, V ac, 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 6 M
Ω
is present, the
meter displays the resistance value.
●
When a signal above the threshold of 1.2 V dc or 1.5 V ac up to the
rated 450 V is present, the meter displays the appropriate voltage value
in dc or ac, whichever larger in peak magnitude.
●
The AutoTect
test mode input impedance is lower than most digital
multimeters and LoZ is displayed on the LCD. This may cause reading
errors if the circuit being measured is sensitive to the meter input
impedance. Input impedance is approximately 160
Ω
, helping determine
if voltage is from leakage (so-called “ghost” voltages) or a hard
connection. “Ghost” voltages will be zeroed out by the low input
impedance.
●
Overload-Alert Feature
When above rated 450 V is present, the meter displays OL with a
warning beep tone. Disconnect the test leads from the signal
immediately to avoid hazards.
•
Range-Lock Feature
When a measurement reading is displayed in the AutoTect
mode,
press the SELECT button momentarily to lock the function-range. The
LCD annunciator Auto turns off. Range-lock can speed up repetitive
measurements. Press the SELECT button momentarily again to return to
AutoTect
mode.
When making resistance measurements in AutoTect
mode, an unexpected
display of voltage readings alerts you that the circuit under test is still
energized.
Continuity, Audible With Symbolic Display
With Auto on the LCD, press the SELECT button once to select Continuity
function. The meter will show a symbolic open-switch display
. A
continuous beep tone and a symbolic closed-switch
indicates a closed
circuit. Continuity is used for checking wiring connections and operation of
switches.
Electric Field EF-Detection, VolTect
With Auto displayed on the LCD, press the SELECT button momentarily 2
times to select the EF-Detection feature. The meter displays EF. Signal
