Amprobe ACD-15 Pro Mode D'emploi page 12

Note:
• Range-Lock Feature: When a measurement reading is being displayed in
AutoTect mode, press the RANGE button momentarily 1 time this locks the
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function-range it is in. The symbol " Auto"disappears. Range-lock can speed
up repetitive measurements. Press the button momentarily repeatedly to
step through the ranges. Press and hold the button for 1 second or more to
resume AutoTect
• As Hazardous-Alert: When making resistance measurements in AutoTect
mode, an unexpected display of voltage readings alerts you that the object
under test is being energized.
• Ghost-voltage buster: Ghost-voltages are unwanted stray signals coupled
from adjacent hard signals, which confuse common multimeter voltage
measurements. Our AutoTect
impedance (approx. 1.6kΩ at low voltage) to drain ghost voltages leaving
mainly hard signal values on meter readings. It is an invaluable feature for
precise indication of hard signals, such as distinguishing between hot and
open wires (to ground) in electrical installation applications.
WARNING:
• AutoTect mode input impedance increases abruptly from initial 1.6kΩ to
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a few hundred kΩ's on high voltage hard signals. "LoZ" displays on the LCD
to remind the users of being in such low impedance mode. Peak initial load
current, while probing directly to 600VAC for example, can be up to 530mA
(600V x 1.414 / 1.6kΩ), decreasing abruptly to approx. 4mA (600V x 1.414 /
210kΩ) within a fraction of a second. Do not use AutoTect
that could be damaged by such low input impedance. Instead, use slide-switch
function selector common input impedance voltage modes (Hi-Z of approx.
5MΩ) to minimize loading for such circuits.
Manual or Auto-ranging
When the function selected has more than one range, press the RANGE button
momentarily selects manual-ranging. The meter remains in the range it was in.
The LCD symbol
through the ranges. Press and hold the button for 1 second or more to resume
auto-ranging.
Note:
*Manual-ranging feature is not available to 600Ω/ •��/
*To use Manual-ranging feature in AutoCheck
Feature" as explained in footnotes of AutoCheck
mode.
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Auto disappears. Press the button momentarily again to step
mode provides low (ramp-up) input
mode, please see "Range-Lock
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8
mode on circuits
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functions.
mode section.
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