General Description; Correction Of Zero In Dc Measurement; Hold Function - Freeze Display; Automatic Ranges - Metrix MX 670 Manual De Instrucciones

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GENERAL DESCRIPTION

3.1

Correction of zero in DC measurement

This function is present only on model MX675 to return to zero
the display of the remanent magnetization of the clamp in DC
measurement. When the switch is positioned on A
no conductor inserted into the clamp, press the A
HOLD key (about 2 seconds) until display a of zero current
appears. This reset to zero is also indicated by an audio beep
and the display of the symbol ZERO.
This operation must usually be renewed after each high
amplitude current measurement.
Elimination of zero correction is possible only by changing the
function using the switch.
3.2

HOLD function - Freeze display

In model MX670, it is possible to freeze the value displayed by
pressing the "HOLD" button. To deactivate this function, press
the "HOLD" button a second time.
In model MX675, it is possible to freeze the value displayed by
pressing the "A ZERO & HOLD" button. To deactivate this
function, press the "A ZERO & HOLD" button a second time.
3.3

Automatic ranges

Depending on the function and nature of the input signals, the
instrument uses automatically the best suited measurement
range. The manual choice of a range is therefore not possible.
3.4

Auto power-off

The clamp will stop automatically after 10 minutes
(The symbol is displayed).
To deactivate this function, hold down the A ZERO & HOLD
button (for MX675) or the HOLD button (for MX670). Activate
the clamp while turning the switch from the "OFF" position
towards any position.
Release the button when the audio signal confirms the
operation (the symbol is no longer displayed).
3.5

PEAK Function (1 ms)

This function is used for measuring 1-ms peak values in
voltage or current.
To activate the function, press the MIN MAX PEAK key for at
least 2 seconds, until "PEAK" is displayed.
To exit this function, press the MIN MAX PEAK key for at
least 2 seconds or press the A
(MX675) twice or press the HOLD (MX670) button twice; the
clamp returns to normal mode.
MX670 / MX675
and with
DC
ZERO &
DC
ZERO & HOLD button
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