Operation - Extech Instruments 381626 User Manual

Range Hold Button
The Resistance, AC or DC voltage or current ranges can
be selected manually or automatically. The Range Hold
button is used to select the range hold mode as follows.
1. Press to change from automatic to manual ranging.
"RH" is displayed in the manual range mode
2. Press to change range in the manual range mode.
Observe the decimal point position to determine the
range set.
3. Press and HOLD for 2 seconds to change back to
automatic ranging.
Data Hold Button
1. The display will hold the reading when the Data Hold
button is pressed. The "DH" symbol will be displayed.
2. Data Hold will be canceled when the "D-H" button is
pressed again or it will be canceled automatically if the
Function switch is changed to another position.

OPERATION

CAUTION: This meter is a precision electronic instrument.
To avoid damaging the unit, observe all safety statements
contained in this manual.
DC or AC Voltage Measurement
1. Connect the black test lead to the COM jack.
2. Set the Function Switch to the V position and select
AC or DC.
3. Connect the positive test probe and the black test lead
across the source or load under measurement.
For DC voltage, the polarity of the measurement will be
indicated.
DC or AC Current Measurement
1. Connect the black test lead to the COM jack.
2. Set the Function Switch to the mA position and select
DC or AC.
3. Connect the positive test probe and the black test lead
in series with load under measurement.
For DC current, the polarity of the measurement wi l l be
indicated.