Chapter 3 Basic Measurements; Preparation; Measuring Voltage; Connections - Aktakom ABM-4082 User Manual

ABM-4082
Chapter 3
3.1

Preparation

One of the first things you would like to do with your multimeter is to become acquainted with its front panel.
We have provided some exercises in foregoing chapters about preparations for use and operations of front
panel.
The front panel has two rows of keys to select various functions and operations. Most keys have a shifted
function printed in blue above the key. To perform a shifted function, press Shift (the Shift annunciator
will turn on). Then, press the key that has the desired label above it. For example, to select the AC current
function, press Shift then press ACV (ACI) .
If you accidentally press Shift , just press it again to turn off the Shift annunciator.
3.2

Measuring Voltage

Voltage ranges: 100mV, 1V, 10V, 100V, 1000V (750VAC)
Maximum resolution: 1μV (on 100mV range)
AC technique: true RMS, ac-coupled.
3.2.1

Connections

Assuming Model DMM is under factory default conditions, the basic procedure is as follows:
1. Connect test leads to INPUT HI and LO terminals.
2. Select DC or AC voltage measurement by pressing DCV or ACV .
3. Press Auto toggles auto ranging. Notice the AUTO annunciator is displayed with auto ranging. If you
want manual ranging, use the RANGE
consistent with expected voltage.
4. Connect test leads to the sources as shown in Figure 3-1.
CAUTION: Do not apply more than 1000V peak to the input or instrument damages may occur.
5. If the "OVR.FLW" message is displayed, press the up
reading is displayed (or press Auto key for auto ranging). Use the lowest possible range for the best
resolution.
6. Take readings from the display.
20
Basic Measurements
and
key to select a higher range until a normal
keys to select a measurement range